ipv6 over ipv4 backbone mpls mpbgp labeled-unicast on Juniper technologies router 6PE

02.11 2020 | by massimiliano

Il presente documento è rivolto alla costruzione di una rete IPv6 over IPv4 backbone MPLS MPBGP-LU con tecnologia Juniper router […]

https://www.ingegnerianetworking.com/wp-content/uploads/2020/11/ipv6-over-ipv4-backbone-96c.png

Il presente documento è rivolto alla costruzione di una rete IPv6 over IPv4 backbone MPLS MPBGP-LU con tecnologia Juniper router 6PE e la verifica step by step delle configurazioni ed output relativi control-plane e data-plane.

L’architettura di riferimento è la seguente:

ipv6 over ipv4 backbone

L’architettura di laboratorio che copre il diagramma sopra è la seguente (si analizza il flusso di traffico da H1 a H2):

ipv6 over ipv4 gns3

STEP1: configurazione ipv6 slaac CE1

interfaces {

em0 {

description LAN1;

unit 0 {

family inet {

address 10.10.10.1/24;

}

family inet6 {

address 2001:1111:1111::/64 {

eui-64;

}

protocols {

router-advertisement {

interface em0.0 {

prefix 2001:1111:1111::/64;

}

VERIFICA INTERFACE CE1:

root@CE1>; show interfaces em0.0

Logical interface em0.0 (Index 64) (SNMP ifIndex 18)

Flags: SNMP-Traps Encapsulation: ENET2

Input packets : 6

Output packets: 23

Protocol inet, MTU: 1500

Flags: Is-Primary

Addresses, Flags: Is-Default Is-Preferred Is-Primary

Destination: 10.10.10/24, Local: 10.10.10.1, Broadcast: 10.10.10.255

Protocol inet6, MTU: 1500

Flags: Is-Primary

Addresses, Flags: Is-Default Is-Preferred Is-Primary

Destination: 2001:1111:1111::/64,

Local: 2001:1111:1111:0:e2e:49ff:fe62:3600

Addresses, Flags: Is-Preferred

Destination: fe80::/64, Local: fe80::e2e:49ff:fe62:3600

VERIFICA H1 TEST

H1> show

NAME IP/MASK GATEWAY MAC LPORT RHOST:PORT

H1 10.10.10.10/24 10.10.10.1 00:50:79:66:68:00 20018 127.0.0.1:20019

fe80::250:79ff:fe66:6800/64

2001:1111:1111:0:2050:79ff:fe66:6800/64

H1> ping 2001:1111:1111:0:e2e:49ff:fe62:3600

2001:1111:1111:0:e2e:49ff:fe62:3600 icmp6_seq=1 ttl=64 time=1.031 ms

2001:1111:1111:0:e2e:49ff:fe62:3600 icmp6_seq=2 ttl=64 time=1.017 ms

2001:1111:1111:0:e2e:49ff:fe62:3600 icmp6_seq=3 ttl=64 time=0.991 ms

2001:1111:1111:0:e2e:49ff:fe62:3600 icmp6_seq=4 ttl=64 time=1.032 ms

2001:1111:1111:0:e2e:49ff:fe62:3600 icmp6_seq=5 ttl=64 time=0.974 ms

VERIFICA CE1 PING TEST TO H1

root@CE1>; ping inet6 2001:1111:1111:0:2050:79ff:fe66:6800

PING6(56=40+8+8 bytes) 2001:1111:1111:0:e2e:49ff:fe62:3600 –> 2001:1111:1111:0:2050:79ff:fe66:6800

16 bytes from 2001:1111:1111:0:2050:79ff:fe66:6800, icmp_seq=0 hlim=64 time=1.613 ms

16 bytes from 2001:1111:1111:0:2050:79ff:fe66:6800, icmp_seq=1 hlim=64 time=0.670 ms

16 bytes from 2001:1111:1111:0:2050:79ff:fe66:6800, icmp_seq=2 hlim=64 time=0.744 ms

16 bytes from 2001:1111:1111:0:2050:79ff:fe66:6800, icmp_seq=3 hlim=64 time=0.782 ms

16 bytes from 2001:1111:1111:0:2050:79ff:fe66:6800, icmp_seq=4 hlim=64 time=0.827 ms

— 2001:1111:1111:0:2050:79ff:fe66:6800 ping6 statistics —

5 packets transmitted, 5 packets received, 0% packet loss

round-trip min/avg/max/std-dev = 0.670/0.927/1.613/0.347 ms

STEP2: configurazione sessione EBGP IPV6 CE1 to PE1:

CE1

PE1

interfaces {

em1 {

description to-PE1;

unit 0 {

family inet {

address 10.1.0.0/31;

}

family inet6 {

address fc00::10:1:0:0/127;

}

routing-options {

autonomous-system 64512;

}

protocols {

bgp {

group IPV6-EBGP {

type external;

local-address fc00::10:1:0:0;

family inet6 {

unicast;

}

peer-as 65000;

neighbor fc00::10:1:0:1 {

export IPV6-OUT;

}

policy-options {

policy-statement IPV6-OUT {

term ipv6-out {

from protocol direct;

then accept;

}

root@CE1>;

interfaces {

em2 {

description to-CE1;

unit 0 {

family inet {

address 10.1.0.1/31;

}

family inet6 {

address fc00::10:1:0:1/127;

}

routing-options {

autonomous-system 65000;

}

protocols {

bgp {

group IPV6-EBGP {

type external;

local-address fc00::10:1:0:1;

family inet6 {

unicast;

}

peer-as 64512;

neighbor fc00::10:1:0:0 {

}

root@PE1>;

I router Junos mettono a disposizione due modalità di collegamento PE1 – CE1 di cui:

Prima opzione: due sessioni EBGP peering di cui una dedicata al collegamento IPv4 e scambia pacchetti unicast di tipo AFI=1 e SAFI=1 mentre l’altra sessione dedicata al collegamento IPv6 dove i rispettivi peer scambiano pacchetti di tipo IPv6 unicast AFI=2 e SAFI=1

Seconda opzione: consiste in una singola sessione EBGP stabilita a livello IPv4; di fatto questo multiprotocol EBGP session è in grado di segnalare sia pacchettiIPv4 unicast (AFI=1 SAFI=1) ed IPv6 (AFI=2 SAFI=1)

La configurazione di cui sopra mette in evidenza la capacità dual-stack; il gruppo evidenziato in questo documento è dedicato al solo peering EBGP-IPv6.

VERIFICA INTERFACE CE1 and PE1

root@CE1>; show interfaces em1

Physical interface: em1, Enabled, Physical link is Up

Interface index: 9, SNMP ifIndex: 23

Description: to-CE1

Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Speed: 1000mbps

Device flags : Present Running

Interface flags: SNMP-Traps

Link type : Full-Duplex

Current address: 0c:2e:49:62:36:01, Hardware address: 0c:2e:49:62:36:01

Last flapped : Never

Input packets : 730

Output packets: 854

root@CE1>; show interfaces em1.0

Logical interface em1.0 (Index 65) (SNMP ifIndex 24)

Flags: SNMP-Traps Encapsulation: ENET2

Input packets : 708

Output packets: 832

Protocol inet, MTU: 1500

Flags: None

Addresses, Flags: Is-Preferred Is-Primary

Destination: 10.1.0.0/31, Local: 10.1.0.0

Protocol inet6, MTU: 1500

Flags: None

Addresses, Flags: Is-Preferred Is-Primary

Destination: fc00::10:1:0:0/127, Local: fc00::10:1:0:0

Addresses, Flags: Is-Preferred

Destination: fe80::/64, Local: fe80::e2e:49ff:fe62:3601

root@PE1>; show interfaces em2

Physical interface: em2, Enabled, Physical link is Up

Interface index: 128, SNMP ifIndex: 116

Description: to-CE1

Type: Ethernet, Link-level type: Ethernet, MTU: 1514, Speed: 1000mbps

Device flags : Present Running

Interface flags: SNMP-Traps

Current address: 0c:2e:49:10:c0:02, Hardware address: 0c:2e:49:10:c0:02

Last flapped : 2020-11-02 13:40:52 UTC (01:10:25 ago)

Input packets : 784

Output packets: 743

root@PE1>; show interfaces em2.0

Logical interface em2.0 (Index 64) (SNMP ifIndex 117)

Flags: Up SNMP-Traps 0x4000000 Encapsulation: ENET2

Bandwidth: 0

Input packets : 735

Output packets: 750

Protocol inet, MTU: 1500

Max nh cache: 100000, New hold nh limit: 100000, Curr nh cnt: 1,

Curr new hold cnt: 0, NH drop cnt: 0

Flags: Sendbcast-pkt-to-re, Is-Primary

Addresses, Flags: Is-Preferred Is-Primary

Destination: 10.1.0.0/31, Local: 10.1.0.1

Protocol inet6, MTU: 1500

Max nh cache: 100000, New hold nh limit: 100000, Curr nh cnt: 1,

Curr new hold cnt: 0, NH drop cnt: 0

Flags: Is-Primary

Addresses, Flags: Is-Default Is-Preferred Is-Primary

Destination: fc00::10:1:0:0/127, Local: fc00::10:1:0:1

Addresses, Flags: Is-Preferred

Destination: fe80::/64, Local: fe80::e2e:49ff:fe10:c002

VERIFICA CE1 PING TEST TO PE E VICEVERSA

root@CE1>; ping inet6 fc00::10:1:0:1

PING6(56=40+8+8 bytes) fc00::10:1:0:0 –> fc00::10:1:0:1

16 bytes from fc00::10:1:0:1, icmp_seq=0 hlim=64 time=1.345 ms

16 bytes from fc00::10:1:0:1, icmp_seq=1 hlim=64 time=1.602 ms

16 bytes from fc00::10:1:0:1, icmp_seq=2 hlim=64 time=1.444 ms

16 bytes from fc00::10:1:0:1, icmp_seq=3 hlim=64 time=1.278 ms

16 bytes from fc00::10:1:0:1, icmp_seq=4 hlim=64 time=1.430 ms

— fc00::10:1:0:1 ping6 statistics —

5 packets transmitted, 5 packets received, 0% packet loss

round-trip min/avg/max/std-dev = 1.278/1.420/1.602/0.109 ms

root@PE1>; ping inet6 fc00::10:1:0:0

PING6(56=40+8+8 bytes) fc00::10:1:0:1 –> fc00::10:1:0:0

16 bytes from fc00::10:1:0:0, icmp_seq=0 hlim=64 time=4.866 ms

16 bytes from fc00::10:1:0:0, icmp_seq=1 hlim=64 time=1.886 ms

16 bytes from fc00::10:1:0:0, icmp_seq=2 hlim=64 time=1.934 ms

16 bytes from fc00::10:1:0:0, icmp_seq=3 hlim=64 time=1.599 ms

16 bytes from fc00::10:1:0:0, icmp_seq=4 hlim=64 time=1.522 ms

— fc00::10:1:0:0 ping6 statistics —

5 packets transmitted, 5 packets received, 0% packet loss

round-trip min/avg/max/std-dev = 1.522/2.361/4.866/1.262 ms

VERIFICA SESSIONE EBGP PEERING IPV6

root@CE1>; show bgp summary

Groups: 3 Peers: 3 Down peers: 1

Table Tot Paths Act Paths Suppressed History Damp State Pending

inet.0 1 1 0 0 0 0

inet6.0 1 1 0 0 0 0

Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped…

10.1.0.1 65000 169 171 0 0 1:15:34 1/1/1/0 0/0/0/0

fc00::10:1:0:1 65000 169 170 0 0 1:15:30 Establ

inet6.0: 1/1/1/0

root@PE1>; show bgp summary

Groups: 3 Peers: 4 Down peers: 0

Table Tot Paths Act Paths Suppressed History Damp State Pending

inet.0

4 2 0 0 0 0

inet6.0

4 2 0 0 0 0

Peer AS InPkt OutPkt OutQ Flaps Last Up/Dwn State|#Active/Received/Accepted/Damped…

10.1.0.0 64512 175 171 0 0 1:17:27 1/2/2/0 0/0/0/0

172.16.0.201 65000 160 158 0 0 1:09:30 Establ

inet.0: 1/1/1/0

inet6.0: 1/1/1/0

172.16.0.202 65000 160 157 0 0 1:09:23 Establ

inet.0: 0/1/1/0

inet6.0: 0/1/1/0

fc00::10:1:0:0 64512 174 172 0 0 1:17:23 Establ

inet6.0: 1/2/2/0

root@PE1>;

VERIFICA RIB CE1 INET6

root@CE1>; show route table inet6

inet6.0: 8 destinations, 9 routes (8 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

2001:1111:1111::/64*[Direct/0] 01:30:19

> via em0.0

2001:1111:1111:0:e2e:49ff:fe62:3600/128

*[Local/0] 01:30:19

Local via em0.0

2003:3333:3333::/64*[BGP/170] 01:09:57, localpref 100

AS path: 65000 64513 I

> to fc00::10:1:0:1 via em1.0

fc00::10:1:0:0/127 *[Direct/0] 01:30:19

> via em1.0

fc00::10:1:0:0/128 *[Local/0] 01:30:19

Local via em1.0

fe80::/64 *[Direct/0] 01:30:19

> via em0.0

[Direct/0] 01:30:19

> via em1.0

fe80::e2e:49ff:fe62:3600/128

*[Local/0] 01:30:19

Local via em0.0

fe80::e2e:49ff:fe62:3601/128

*[Local/0] 01:30:19

Local via em1.0

VERIFICA RIB PE1 INET6

root@PE1>; show route table inet6

inet6.0: 7 destinations, 9 routes (7 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

2001:1111:1111::/64*[BGP/170] 01:21:40, localpref 100

AS path: 64512 I, validation-state: unverified

> to fc00::10:1:0:0 via em2.0

2003:3333:3333::/64*[BGP/170] 01:08:05, localpref 100, from 172.16.0.201

AS path: 64513 I, validation-state: unverified

> to 10.1.0.3 via em4.0, Push 2, Push 299808(top)

[BGP/170] 01:08:05, localpref 100, from 172.16.0.202

AS path: 64513 I, validation-state: unverified

> to 10.1.0.3 via em4.0, Push 2, Push 299808(top)

fc00::10:1:0:0/127 *[Direct/0] 01:21:49

> via em2.0

[BGP/170] 01:21:40, localpref 100

AS path: 64512 I, validation-state: unverified

> to fc00::10:1:0:0 via em2.0

fc00::10:1:0:1/128 *[Local/0] 01:21:49

Local via em2.0

fe80::e2e:49ff:fe10:c002/128

*[Local/0] 01:21:49

Local via em2.0

fe80::e2e:49ff:fe10:c004/128

*[Local/0] 01:21:49

Local via em4.0

ff02::2/128 *[INET6/0] 01:21:50

MultiRecv

inet6.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

::ffff:172.16.0.1/128

*[LDP/9] 01:15:56, metric 1

> to 10.1.0.3 via em4.0

::ffff:172.16.0.2/128

*[LDP/9] 01:15:09, metric 2

> to 10.1.0.3 via em4.0, Push 299792

::ffff:172.16.0.22/128

*[LDP/9] 01:09:35, metric 3

> to 10.1.0.3 via em4.0, Push 299808

root@PE1>;

NOTA: da ora in poi entriamo nel backbone IPV4 con MPBGP labeled-unicast e pertanto le tabelle di routing che andiamo a verificare sono:

INET.0 che rappresenta la tabella di routing IPv4 ed è popolata da protocolli di routing IGP (OSPF nel nostro lab, vanilla BGP)

INET.3 che rappresenta la tabella ausiliaria per la risoluzione del BGP Next-Hop ed è popolata da protocolli di segnalazione quali MPLS/LDP, RSVP, SPRING (nel nostro lab abbiamo MPLS/LDP)

INET6.0 ed INET6.3 sono relativi a tabelle come sopra ma dedicate al trasporto di pacchetti IPV6.

Di seguito vengono indicate le configurazioni dei PE router, P-router e in questo laboratorio impiegati i due Router Reflector:

STEP3: Configurazione Backbone MPLS IPV4

PE1

PE2

interfaces {

em2 {

description to-CE1;

unit 0 {

family inet {

address 10.1.0.1/31;

}

family inet6 {

address fc00::10:1:0:1/127;

}

em4 {

description to-P1;

unit 0 {

family inet {

address 10.1.0.2/31;

}

family inet6;

family mpls;

}

lo0 {

unit 0 {

family inet {

address 172.16.0.11/32;

}

routing-options {

autonomous-system 65000;

}

protocols {

mpls {

ipv6-tunneling;

icmp-tunneling;

interface em4.0;

}

bgp {

group EBGP {

type external;

local-address 10.1.0.1;

family inet {

unicast;

}

peer-as 64512;

neighbor 10.1.0.0 {

export nhipv6-out;

}

group IPV6-EBGP {

type external;

local-address fc00::10:1:0:1;

family inet6 {

unicast;

}

peer-as 64512;

neighbor fc00::10:1:0:0 {

export nhipv6-out;

}

group IBGP-RR {

type internal;

local-address 172.16.0.11;

family inet {

unicast {

add-path {

receive;

send {

path-count 6;

}

family inet6 {

labeled-unicast {

explicit-null;

}

export NHS-CLIENT;

peer-as 65000;

neighbor 172.16.0.201;

neighbor 172.16.0.202;

}

ospf {

area 0.0.0.0 {

interface lo0.0;

interface em4.0;

}

ldp {

track-igp-metric;

interface em4.0;

}

policy-options {

policy-statement NHS-CLIENT {

term NHS {

from family inet;

then {

next-hop self;

}

term NHS-IPV6 {

from family inet6;

then {

next-hop self;

}

interfaces {

em2 {

description to-P2;

unit 0 {

family inet {

address 10.1.0.7/31;

}

family inet6;

family mpls;

}

em4 {

description to-CE2;

unit 0 {

family inet {

address 10.1.0.8/31;

}

family inet6 {

address fc00::10:3:0:1/127;

}

lo0 {

unit 0 {

family inet {

address 172.16.0.22/32;

}

routing-options {

autonomous-system 65000;

}

protocols {

mpls {

ipv6-tunneling;

icmp-tunneling;

interface em2.0;

}

bgp {

group EBGP {

type external;

peer-as 64513;

neighbor 10.1.0.9;

}

group IPV6-EBGP {

type external;

local-address fc00::10:3:0:1;

family inet6 {

unicast;

}

peer-as 64513;

neighbor fc00::10:3:0:0;

}

group IBGP-RR {

local-address 172.16.0.22;

family inet {

unicast {

add-path {

receive;

send {

path-count 6;

}

family inet6 {

labeled-unicast {

explicit-null;

}

export NHS-CLIENT;

peer-as 65000;

neighbor 172.16.0.201;

neighbor 172.16.0.202;

}

ospf {

area 0.0.0.0 {

interface lo0.0;

interface em2.0;

}

ldp {

track-igp-metric;

interface em2.0;

}

policy-options {

policy-statement NHS-CLIENT {

term NHS {

from family inet;

then {

next-hop self;

}

term NHS-IPV6 {

from family inet6;

then {

next-hop self;

}

root@PE2>;

}

interfaces {

em0 {

description to-P2;

unit 0 {

family inet {

address 10.1.0.4/31;

}

family mpls;

}

em1 {

description to-PE1;

unit 0 {

family inet {

address 10.1.0.3/31;

}

family mpls;

}

em3 {

description to-RR1;

unit 0 {

family inet {

address 10.1.0.10/31;

}

family mpls;

}

lo0 {

unit 0 {

family inet {

address 172.16.0.1/32;

}

protocols {

mpls {

icmp-tunneling;

interface em1.0;

interface em0.0;

}

ospf {

area 0.0.0.0 {

interface lo0.0;

interface em0.0;

interface em1.0;

interface em3.0;

}

ldp {

track-igp-metric;

interface em0.0;

interface em1.0;

}

root@P1>;

interfaces {

em0 {

description to-P1;

unit 0 {

family inet {

address 10.1.0.5/31;

}

family mpls;

}

em1 {

description to-PE2;

unit 0 {

family inet {

address 10.1.0.6/31;

}

family mpls;

}

em3 {

description to-RR2;

unit 0 {

family inet {

address 10.1.0.12/31;

}

family mpls;

}

lo0 {

unit 0 {

family inet {

address 172.16.0.2/32;

}

protocols {

mpls {

icmp-tunneling;

interface em0.0;

interface em1.0;

}

ospf {

area 0.0.0.0 {

interface lo0.0;

interface em0.0;

interface em1.0;

interface em3.0;

}

ldp {

track-igp-metric;

interface em0.0;

interface em1.0;

}

root@P2>;

RR1

RR2

interfaces {

em0 {

description to-P1;

unit 0 {

family inet {

address 10.1.0.11/31;

}

lo0 {

unit 0 {

family inet {

address 172.16.0.201/32;

}

routing-options {

rib inet6.0 {

static {

route 0::0/0 discard;

}

autonomous-system 65000;

}

protocols {

bgp {

group IBGP {

type internal;

local-address 172.16.0.201;

family inet {

unicast;

}

family inet6 {

labeled-unicast {

explicit-null;

}

peer-as 65000;

neighbor 172.16.0.202;

}

group IBGP-CLIENT {

type internal;

local-address 172.16.0.201;

family inet {

unicast;

}

family inet6 {

labeled-unicast {

explicit-null;

}

cluster 172.16.0.201;

peer-as 65000;

neighbor 172.16.0.11;

neighbor 172.16.0.22;

}

ospf {

area 0.0.0.0 {

interface lo0.0;

interface em0.0;

}

root@RR1>;

interfaces {

em0 {

description to-P2;

unit 0 {

family inet {

address 10.1.0.13/31;

}

lo0 {

unit 0 {

family inet {

address 172.16.0.202/32;

}

routing-options {

rib inet6.0 {

static {

route 0::0/0 discard;

}

autonomous-system 65000;

}

protocols {

bgp {

group IBGP {

type internal;

local-address 172.16.0.202;

family inet {

unicast;

}

family inet6 {

labeled-unicast {

explicit-null;

}

neighbor 172.16.0.201;

}

group IBGP-CLIENT {

type internal;

local-address 172.16.0.202;

family inet {

unicast;

}

family inet6 {

labeled-unicast {

explicit-null;

}

cluster 172.16.0.202;

neighbor 172.16.0.11;

neighbor 172.16.0.22;

}

ospf {

area 0.0.0.0 {

interface lo0.0;

interface em0.0;

}

root@RR2>;

Ora dal punto di vista del PE1 andiamo a vedere le tabelle di routing per il control-plane che coinvolgono il path PE1 – RR – PE2

Il path analizzato ha come indirizzo di destinazione la rete IPV6 2003:3333:3333::/64

root@PE1>; show route 2003:3333:3333::/64

inet6.0: 7 destinations, 9 routes (7 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

2003:3333:3333::/64*[BGP/170] 00:18:57, localpref 100, from 172.16.0.201

AS path: 64513 I, validation-state: unverified

> to 10.1.0.3 via em4.0, Push 2, Push 299808(top)

[BGP/170] 00:18:57, localpref 100, from 172.16.0.202

AS path: 64513 I, validation-state: unverified

> to 10.1.0.3 via em4.0, Push 2, Push 299808(top)

root@PE1>; show route 172.16.0.201

inet.0: 18 destinations, 20 routes (18 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

172.16.0.201/32 *[OSPF/10] 00:38:35, metric 2

> to 10.1.0.3 via em4.0

root@PE1>; show route 172.16.0.202

inet.0: 18 destinations, 20 routes (18 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

172.16.0.202/32 *[OSPF/10] 00:46:24, metric 3

> to 10.1.0.3 via em4.0

Si evince come il nodo PE1 con il push della label 2 che rappresenta la label di servizio (quella interna applicata ai pacchetti entranti in IPv6) applica correttamente la funzionalità 6PE via MPBGP e trasforma il next-hop in un indirizzo IPv4 per le prefix annunciate via IPv6.

Il push della label 299808 rappresenta invece la label di trasporto (quella più esterna) ed è presente nella tabella mpls.0 dei router Juniper.

NOTA: la sintassi ” explicit-null ” indica una modalità di allocazione label di tipo per-table (anche conosciuta come per-VRF) dove un egress router assegna la stessa label a tutte le prefix nella stessa tabella ipv6 (anche se in questo lab ipv6 i nodi 6PE non hanno nessuna VRF). Il valore di label assegnata ha numero 2.

La rete IPv6 è presente nella tabella INET6.0 annunciata dai rispettivi RRs (ho configurato sopra a livello PE un add-path..) ed aventi come next-hop BGP i seguenti indirizzi indicati dal seguente output:

root@PE1>; show route 2003:3333:3333::/64 extensive

inet6.0: 7 destinations, 9 routes (7 active, 0 holddown, 0 hidden)

2003:3333:3333::/64 (2 entries, 1 announced)

TSI:

KRT in-kernel 2003:3333:3333::/64 -> {indirect(131071)}

Page 0 idx 0, (group IPV6-EBGP type External) Type 1 val 0xd0935b4 (adv_entry)

Advertised metrics:

Flags: Nexthop Change

Nexthop: fc00::10:1:0:1

AS path: [65000] 64513 I

Communities:

Path 2003:3333:3333:: from 172.16.0.201 Vector len 4. Val: 0

*BGP Preference: 170/-101

Next hop type: Indirect, Next hop index: 0

Address: 0xb499e10

Next-hop reference count: 3

Source: 172.16.0.201

Next hop type: Router, Next hop index: 571

Next hop: 10.1.0.3 via em4.0, selected

Label operation: Push 2, Push 299808(top)

Label TTL action: prop-ttl, prop-ttl(top)

Load balance label: Label 2: None; Label 299808: None;

Label element ptr: 0xb499c20

Label parent element ptr: 0xb499c80

Label element references: 1

Label element child references: 0

Label element lsp id: 0

Session Id: 0x0

Protocol next hop: ::ffff:172.16.0.22

Label operation: Push 2

Label TTL action: prop-ttl

Load balance label: Label 2: None;

Indirect next hop: 0xb714ec0 131071 INH Session ID: 0x0

State: <Active Int Ext>

Local AS: 65000 Peer AS: 65000

Age: 31:28 Metric2: 3

Validation State: unverified

Task: BGP_65000.172.16.0.201

Announcement bits (3): 0-KRT 2-BGP_RT_Background 3-Resolve tree 3

AS path: 64513 I (Originator)

Cluster list: 172.16.0.201

Originator ID: 172.16.0.22

Accepted

Route Label: 2

Localpref: 100

Router ID: 172.16.0.201

Indirect next hops: 1

Protocol next hop: ::ffff:172.16.0.22 Metric: 3

Label operation: Push 2

Label TTL action: prop-ttl

Load balance label: Label 2: None;

Indirect next hop: 0xb714ec0 131071 INH Session ID: 0x0

Indirect path forwarding next hops: 1

Next hop type: Router

Next hop: 10.1.0.3 via em4.0

Session Id: 0x0

::ffff:172.16.0.22/128 Originating RIB: inet6.3

Metric: 3 Node path count: 1

Forwarding nexthops: 1

Nexthop: 10.1.0.3 via em4.0

BGP Preference: 170/-101

Next hop type: Indirect, Next hop index: 0

Address: 0xb499e10

Next-hop reference count: 3

Source: 172.16.0.202

Next hop type: Router, Next hop index: 571

Next hop: 10.1.0.3 via em4.0, selected

Label operation: Push 2, Push 299808(top)

Label TTL action: prop-ttl, prop-ttl(top)

Load balance label: Label 2: None; Label 299808: None;

Label element ptr: 0xb499c20

Label parent element ptr: 0xb499c80

Label element references: 1

Label element child references: 0

Label element lsp id: 0

Session Id: 0x0

Protocol next hop: ::ffff:172.16.0.22

Label operation: Push 2

Label TTL action: prop-ttl

Load balance label: Label 2: None;

Indirect next hop: 0xb714ec0 131071 INH Session ID: 0x0

State: <NotBest Int Ext>

Inactive reason: Not Best in its group – Update source

Local AS: 65000 Peer AS: 65000

Age: 31:28 Metric2: 3

Validation State: unverified

Task: BGP_65000.172.16.0.202

AS path: 64513 I (Originator)

Cluster list: 172.16.0.202

Originator ID: 172.16.0.22

Accepted

Route Label: 2

Localpref: 100

Router ID: 172.16.0.202

Indirect next hops: 1

Protocol next hop: ::ffff:172.16.0.22 Metric: 3

Label operation: Push 2

Label TTL action: prop-ttl

Load balance label: Label 2: None;

Indirect next hop: 0xb714ec0 131071 INH Session ID: 0x0

Indirect path forwarding next hops: 1

Next hop type: Router

Next hop: 10.1.0.3 via em4.0

Session Id: 0x0

::ffff:172.16.0.22/128 Originating RIB: inet6.3

Metric: 3 Node path count: 1

Forwarding nexthops: 1

Nexthop: 10.1.0.3 via em4.0

root@PE1>;

root@PE1>; show route table inet6.3

inet6.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

::ffff:172.16.0.1/128

*[LDP/9] 00:48:26, metric 1

> to 10.1.0.3 via em4.0

::ffff:172.16.0.2/128

*[LDP/9] 00:47:46, metric 2

> to 10.1.0.3 via em4.0, Push 299792

::ffff:172.16.0.22/128

*[LDP/9] 00:39:53, metric 3

> to 10.1.0.3 via em4.0, Push 299808

Per la parte di Data o Forwarding Plane abbiamo la seguente tabella mpls.0 ed inet.3 per il BGP Next-Hop

root@PE1>; show route table inet.3

inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

172.16.0.1/32 *[LDP/9] 01:27:18, metric 1

> to 10.1.0.3 via em4.0

172.16.0.2/32 *[LDP/9] 01:26:38, metric 2

> to 10.1.0.3 via em4.0, Push 299792

172.16.0.22/32 *[LDP/9] 01:18:45, metric 3

> to 10.1.0.3 via em4.0, Push 299808

root@PE1>; show route table mpls.0

mpls.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

0 *[MPLS/0] 01:04:15, metric 1

Receive

1 *[MPLS/0] 01:04:15, metric 1

Receive

2 *[MPLS/0] 01:04:15, metric 1

Receive

13 *[MPLS/0] 01:04:15, metric 1

Receive

299776 *[LDP/9] 01:02:17, metric 1

> to 10.1.0.3 via em4.0, Pop

299776(S=0) *[LDP/9] 01:02:17, metric 1

> to 10.1.0.3 via em4.0, Pop

299792 *[LDP/9] 01:01:37, metric 1

> to 10.1.0.3 via em4.0, Swap 299792

299808 *[LDP/9] 00:53:44, metric 1

> to 10.1.0.3 via em4.0, Swap 299808

Per quanto riguarda, quindi, il forwarding-plane è necessario verificare la funzionalità mpls label durante il path PE1 – P1 – P2 – PE2 e precisamente (PE1 lo abbiamo appena visto..)

root@P1>; show route table inet.3

inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

172.16.0.2/32 *[LDP/9] 01:28:43, metric 1

> to 10.1.0.5 via em0.0

172.16.0.11/32 *[LDP/9] 01:29:23, metric 1

> to 10.1.0.2 via em1.0

172.16.0.22/32 *[LDP/9] 01:20:50, metric 2

> to 10.1.0.5 via em0.0, Push 299808

root@P1>; show route table mpls.0

mpls.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

0 *[MPLS/0] 01:20:11, metric 1

Receive

1 *[MPLS/0] 01:20:11, metric 1

Receive

2 *[MPLS/0] 01:20:11, metric 1

Receive

299776 *[LDP/9] 01:19:54, metric 1

> to 10.1.0.2 via em1.0, Pop

299776(S=0) *[LDP/9] 01:19:54, metric 1

> to 10.1.0.2 via em1.0, Pop

299792 *[LDP/9] 01:19:14, metric 1

> to 10.1.0.5 via em0.0, Pop

299792(S=0) *[LDP/9] 01:19:14, metric 1

> to 10.1.0.5 via em0.0, Pop

299808 *[LDP/9] 01:11:21, metric 1

> to 10.1.0.5 via em0.0, Swap 299808

root@P2>; show route table inet.3

inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

172.16.0.1/32 *[LDP/9] 01:29:39, metric 1

> to 10.1.0.4 via em0.0

172.16.0.11/32 *[LDP/9] 01:29:39, metric 2

> to 10.1.0.4 via em0.0, Push 299776

172.16.0.22/32 *[LDP/9] 01:21:45, metric 1

> to 10.1.0.7 via em1.0

root@P2>; show route table mpls.0

mpls.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

0 *[MPLS/0] 01:30:50, metric 1

Receive

1 *[MPLS/0] 01:30:50, metric 1

Receive

2 *[MPLS/0] 01:30:50, metric 1

Receive

299776 *[LDP/9] 01:30:01, metric 1

> to 10.1.0.4 via em0.0, Pop

299776(S=0) *[LDP/9] 01:30:01, metric 1

> to 10.1.0.4 via em0.0, Pop

299792 *[LDP/9] 01:30:01, metric 1

> to 10.1.0.4 via em0.0, Swap 299776

299808 *[LDP/9] 01:22:07, metric 1

> to 10.1.0.7 via em1.0, Pop

299808(S=0) *[LDP/9] 01:22:07, metric 1

> to 10.1.0.7 via em1.0, Pop

root@PE2>; show route 2003:3333:3333::

inet6.0: 7 destinations, 9 routes (7 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

2003:3333:3333::/64*[BGP/170] 01:20:30, localpref 100

AS path: 64513 I, validation-state: unverified

> to fc00::10:3:0:0 via em4.0

root@PE2>; show route fc00::10:3:0:0

inet6.0: 7 destinations, 9 routes (7 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

fc00::10:3:0:0/127 *[Direct/0] 01:24:42

> via em4.0

[BGP/170] 01:20:51, localpref 100

AS path: 64513 I, validation-state: unverified

> to fc00::10:3:0:0 via em4.0

Il diagramma di rete evidenzia la funzionalità data-plane:

ipv6 lu ex1

A livello Router Reflector la tabella di routing si limita alla INET.0 (IPv4) ed INET.6 (IPV6) per la taggiungibiità delle prefix IPv6 via BGP Next-Hop IPV4; si riporta la sola tabella INET.6

root@RR1>; show route table inet6

inet6.0: 3 destinations, 5 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

::/0 *[Static/5] 02:14:54

Discard

2001:1111:1111::/64*[BGP/170] 02:13:47, localpref 100, from 172.16.0.11

AS path: 64512 I

Indirect

[BGP/170] 02:13:37, localpref 100, from 172.16.0.202

AS path: 64512 I

Indirect

2003:3333:3333::/64*[BGP/170] 02:06:22, localpref 100, from 172.16.0.22

AS path: 64513 I

Indirect

[BGP/170] 02:06:22, localpref 100, from 172.16.0.202

AS path: 64513 I

Indirect

root@RR2>; show route table inet6

inet6.0: 3 destinations, 5 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

::/0 *[Static/5] 02:15:09

Discard

2001:1111:1111::/64*[BGP/170] 02:14:00, localpref 100, from 172.16.0.11

AS path: 64512 I

Indirect

[BGP/170] 02:14:10, localpref 100, from 172.16.0.201

AS path: 64512 I

Indirect

2003:3333:3333::/64*[BGP/170] 02:06:45, localpref 100, from 172.16.0.22

AS path: 64513 I

Indirect

[BGP/170] 02:06:45, localpref 100, from 172.16.0.201

AS path: 64513 I

Indirect

VERIFICA FINALE DI TEST PING H1 TO H2

H1> ping 2003:3333:3333:0:2050:79ff:fe66:6801

2003:3333:3333:0:2050:79ff:fe66:6801 icmp6_seq=1 ttl=54 time=910.346 ms

2003:3333:3333:0:2050:79ff:fe66:6801 icmp6_seq=2 ttl=52 time=10.968 ms

2003:3333:3333:0:2050:79ff:fe66:6801 icmp6_seq=3 ttl=52 time=8.569 ms

2003:3333:3333:0:2050:79ff:fe66:6801 icmp6_seq=4 ttl=52 time=10.918 ms

2003:3333:3333:0:2050:79ff:fe66:6801 icmp6_seq=5 ttl=52 time=9.670 ms

H2> show

NAME IP/MASK GATEWAY MAC LPORT RHOST:PORT

H2 10.30.30.30/24 10.30.30.1 00:50:79:66:68:01 20096 127.0.0.1:20097

fe80::250:79ff:fe66:6801/64

2003:3333:3333:0:2050:79ff:fe66:6801/64

VERIFICA FINALE DI TEST PING H2 TO H1

H2> ping 2001:1111:1111:0:2050:79ff:fe66:6800

2001:1111:1111:0:2050:79ff:fe66:6800 icmp6_seq=1 ttl=52 time=9.029 ms

2001:1111:1111:0:2050:79ff:fe66:6800 icmp6_seq=2 ttl=52 time=9.891 ms

2001:1111:1111:0:2050:79ff:fe66:6800 icmp6_seq=3 ttl=52 time=9.076 ms

2001:1111:1111:0:2050:79ff:fe66:6800 icmp6_seq=4 ttl=52 time=8.696 ms

2001:1111:1111:0:2050:79ff:fe66:6800 icmp6_seq=5 ttl=52 time=9.308 ms

H1> show

NAME IP/MASK GATEWAY MAC LPORT RHOST:PORT

H1 10.10.10.10/24 10.10.10.1 00:50:79:66:68:00 20018 127.0.0.1:20019

fe80::250:79ff:fe66:6800/64

2001:1111:1111:0:2050:79ff:fe66:6800/64

L’introduzione del Traffic-Engineering comporta un introduzione del protocollo RSVP ed OSPF-TE a livello dei nodi PE e P router e si riportano le configurazioni di dettaglio relative ed output di riferimento:

PE1

PE2

protocols {

rsvp {

interface em4.0;

}

mpls {

ipv6-tunneling;

icmp-tunneling;

label-switched-path TO_PE2 {

to 172.16.0.22;

fast-reroute;

}

interface em4.0;

}

bgp {

group IBGP-RR {

type internal;

local-address 172.16.0.11;

family inet {

unicast {

add-path {

receive;

send {

path-count 6;

}

family inet-vpn {

unicast;

}

family inet6 {

labeled-unicast {

explicit-null;

}

family inet6-vpn {

unicast;

}

export NHS-CLIENT;

peer-as 65000;

neighbor 172.16.0.201;

neighbor 172.16.0.202;

}

ospf {

traffic-engineering;

area 0.0.0.0 {

interface lo0.0;

interface em4.0;

}

ldp {

track-igp-metric;

interface em4.0;

}

policy-options {

policy-statement NHS-CLIENT {

term NHS {

from family inet;

then {

next-hop self;

}

term NHS-IPV6 {

from family inet6;

then {

next-hop self;

}

protocols {

rsvp {

interface em2.0;

}

mpls {

ipv6-tunneling;

icmp-tunneling;

label-switched-path TO_PE1 {

to 172.16.0.11;

fast-reroute;

}

interface em2.0;

}

bgp {

group IBGP-RR {

local-address 172.16.0.22;

family inet {

unicast {

add-path {

receive;

send {

path-count 6;

}

family inet-vpn {

unicast;

}

family inet6 {

labeled-unicast {

explicit-null;

}

family inet6-vpn {

unicast;

}

export NHS-CLIENT;

peer-as 65000;

neighbor 172.16.0.201;

neighbor 172.16.0.202;

}

ospf {

traffic-engineering;

area 0.0.0.0 {

interface lo0.0;

interface em2.0;

}

ldp {

track-igp-metric;

interface em2.0;

}

policy-options {

policy-statement NHS-CLIENT {

term NHS {

from family inet;

then {

next-hop self;

}

term NHS-IPV6 {

from family inet6;

then {

next-hop self;

}

Di seguito gli output significativi partendo dal CE1 al CE2 (path PE1 – P1 – P2 – PE2 data-plane)

root@CE1>; show route

inet.0: 5 destinations, 5 routes (5 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

10.1.0.0/31 *[Direct/0] 01:08:49

> via em1.0

10.1.0.0/32 *[Local/0] 01:08:49

Local via em1.0

10.10.10.0/24 *[Direct/0] 01:08:49

> via em0.0

10.10.10.1/32 *[Local/0] 01:08:49

Local via em0.0

10.30.30.0/24 *[BGP/170] 00:35:25, localpref 100

AS path: 65000 64513 I

> to 10.1.0.1 via em1.0

inet6.0: 8 destinations, 9 routes (8 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

2001:1111:1111::/64*[Direct/0] 01:08:49

> via em0.0

2001:1111:1111:0:e2e:49ff:fe62:3600/128

*[Local/0] 01:08:49

Local via em0.0

2003:3333:3333::/64*[BGP/170] 00:35:23, localpref 100

AS path: 65000 64513 I

> to fc00::10:1:0:1 via em1.0

fc00::10:1:0:0/127 *[Direct/0] 01:08:49

> via em1.0

fc00::10:1:0:0/128 *[Local/0] 01:08:49

Local via em1.0

fe80::/64 *[Direct/0] 01:08:49

> via em0.0

[Direct/0] 01:08:49

> via em1.0

fe80::e2e:49ff:fe62:3600/128

*[Local/0] 01:08:49

Local via em0.0

fe80::e2e:49ff:fe62:3601/128

*[Local/0] 01:08:49

Local via em1.0

root@CE1>;

root@PE1>; show route

inet.0: 18 destinations, 20 routes (18 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

10.1.0.0/31 *[Direct/0] 01:04:45

> via em2.0

[BGP/170] 01:04:40, localpref 100

AS path: 64512 I, validation-state: unverified

> to 10.1.0.0 via em2.0

10.1.0.1/32 *[Local/0] 01:04:45

Local via em2.0

10.1.0.2/31 *[Direct/0] 01:04:45

> via em4.0

10.1.0.2/32 *[Local/0] 01:04:45

Local via em4.0

10.1.0.4/31 *[OSPF/10] 01:03:03, metric 2

> to 10.1.0.3 via em4.0

10.1.0.6/31 *[OSPF/10] 01:02:19, metric 3

> to 10.1.0.3 via em4.0

10.1.0.10/31 *[OSPF/10] 01:03:03, metric 2

> to 10.1.0.3 via em4.0

10.1.0.12/31 *[OSPF/10] 01:02:19, metric 3

> to 10.1.0.3 via em4.0

10.10.10.0/24 *[BGP/170] 01:04:40, localpref 100

AS path: 64512 I, validation-state: unverified

> to 10.1.0.0 via em2.0

10.30.30.0/24 *[BGP/170] 00:37:03, localpref 100, from 172.16.0.201

AS path: 64513 I, validation-state: unverified

> to 10.1.0.3 via em4.0, label-switched-path TO_PE2

[BGP/170] 00:37:03, localpref 100, from 172.16.0.202

AS path: 64513 I, validation-state: unverified

> to 10.1.0.3 via em4.0, label-switched-path TO_PE2

172.16.0.1/32 *[OSPF/10] 01:03:03, metric 1

> to 10.1.0.3 via em4.0

172.16.0.2/32 *[OSPF/10] 01:02:19, metric 2

> to 10.1.0.3 via em4.0

172.16.0.11/32 *[Direct/0] 01:04:45

> via lo0.0

172.16.0.22/32 *[OSPF/10] 00:50:02, metric 3

> to 10.1.0.3 via em4.0

172.16.0.201/32 *[OSPF/10] 00:58:23, metric 2

> to 10.1.0.3 via em4.0

172.16.0.202/32 *[OSPF/10] 00:58:15, metric 3

> to 10.1.0.3 via em4.0

224.0.0.2/32 *[LDP/9] 01:04:45, metric 1

MultiRecv

224.0.0.5/32 *[OSPF/10] 01:04:46, metric 1

MultiRecv

inet.3: 3 destinations, 4 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

172.16.0.1/32 *[LDP/9] 01:02:59, metric 1

> to 10.1.0.3 via em4.0

172.16.0.2/32 *[LDP/9] 01:02:18, metric 2

> to 10.1.0.3 via em4.0, Push 299792

172.16.0.22/32 *[RSVP/7/1] 00:49:57, metric 3

> to 10.1.0.3 via em4.0, label-switched-path TO_PE2

[LDP/9] 00:50:00, metric 3

> to 10.1.0.3 via em4.0, Push 299840

mpls.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

0 *[MPLS/0] 01:04:46, metric 1

Receive

1 *[MPLS/0] 01:04:46, metric 1

Receive

2 *[MPLS/0] 01:04:46, metric 1

Receive

13 *[MPLS/0] 01:04:46, metric 1

Receive

299776 *[LDP/9] 01:02:59, metric 1

> to 10.1.0.3 via em4.0, Pop

299776(S=0) *[LDP/9] 01:02:59, metric 1

> to 10.1.0.3 via em4.0, Pop

299792 *[LDP/9] 01:02:18, metric 1

> to 10.1.0.3 via em4.0, Swap 299792

299824 *[LDP/9] 00:50:00, metric 1

> to 10.1.0.3 via em4.0, Swap 299840

inet6.0: 7 destinations, 9 routes (7 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

2001:1111:1111::/64*[BGP/170] 01:04:26, localpref 100

AS path: 64512 I, validation-state: unverified

> to fc00::10:1:0:0 via em2.0

2003:3333:3333::/64*[BGP/170] 00:37:01, localpref 100, from 172.16.0.201

AS path: 64513 I, validation-state: unverified

> to 10.1.0.3 via em4.0, label-switched-path TO_PE2

[BGP/170] 00:37:01, localpref 100, from 172.16.0.202

AS path: 64513 I, validation-state: unverified

> to 10.1.0.3 via em4.0, label-switched-path TO_PE2

fc00::10:1:0:0/127 *[Direct/0] 01:04:43

> via em2.0

[BGP/170] 01:04:26, localpref 100

AS path: 64512 I, validation-state: unverified

> to fc00::10:1:0:0 via em2.0

fc00::10:1:0:1/128 *[Local/0] 01:04:43

Local via em2.0

fe80::e2e:49ff:fe10:c002/128

*[Local/0] 01:04:43

Local via em2.0

fe80::e2e:49ff:fe10:c004/128

*[Local/0] 01:04:41

Local via em4.0

ff02::2/128 *[INET6/0] 01:04:46

MultiRecv

inet6.3: 3 destinations, 4 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

::ffff:172.16.0.1/128

*[LDP/9] 01:02:59, metric 1

> to 10.1.0.3 via em4.0

::ffff:172.16.0.2/128

*[LDP/9] 01:02:18, metric 2

> to 10.1.0.3 via em4.0, Push 299792

::ffff:172.16.0.22/128

*[RSVP/7/1] 00:49:57, metric 3

> to 10.1.0.3 via em4.0, label-switched-path TO_PE2

[LDP/9] 00:50:00, metric 3

> to 10.1.0.3 via em4.0, Push 299840

root@PE1>;

Per il solo PE1 si riporta la tabella extensive:

root@PE1>; show route 2003:3333:3333:0:2050:79ff:fe66:6801 extensive

inet6.0: 7 destinations, 9 routes (7 active, 0 holddown, 0 hidden)

2003:3333:3333::/64 (2 entries, 1 announced)

TSI:

KRT in-kernel 2003:3333:3333::/64 -> {indirect(131071)}

Page 0 idx 0, (group IPV6-EBGP type External) Type 1 val 0xd15e2dc (adv_entry)

Advertised metrics:

Flags: Nexthop Change

Nexthop: fc00::10:1:0:1

AS path: [65000] 64513 I

Communities:

Path 2003:3333:3333:: from 172.16.0.201 Vector len 4. Val: 0

*BGP Preference: 170/-101

Next hop type: Indirect, Next hop index: 0

Address: 0xd1d6670

Next-hop reference count: 3

Source: 172.16.0.201

Next hop type: Router, Next hop index: 571

Next hop: 10.1.0.3 via em4.0, selected

Label-switched-path TO_PE2

Label operation: Push 2, Push 299824(top)

Label TTL action: prop-ttl, prop-ttl(top)

Load balance label: Label 2: None; Label 299824: None;

Label element ptr: 0xd1d65a0

Label parent element ptr: 0xb498d80

Label element references: 1

Label element child references: 0

Label element lsp id: 0

Session Id: 0x0

Protocol next hop: ::ffff:172.16.0.22

Label operation: Push 2

Label TTL action: prop-ttl

Load balance label: Label 2: None;

Indirect next hop: 0xb715dc0 131071 INH Session ID: 0x0

State: <Active Int Ext>

Local AS: 65000 Peer AS: 65000

Age: 52:58 Metric2: 3

Validation State: unverified

Task: BGP_65000.172.16.0.201

Announcement bits (3): 0-KRT 2-BGP_RT_Background 3-Resolve tree 4

AS path: 64513 I (Originator)

Cluster list: 172.16.0.201

Originator ID: 172.16.0.22

Accepted

Route Label: 2

Localpref: 100

Router ID: 172.16.0.201

Indirect next hops: 1

Protocol next hop: ::ffff:172.16.0.22 Metric: 3

Label operation: Push 2

Label TTL action: prop-ttl

Load balance label: Label 2: None;

Indirect next hop: 0xb715dc0 131071 INH Session ID: 0x0

Indirect path forwarding next hops: 1

Next hop type: Router

Next hop: 10.1.0.3 via em4.0

Session Id: 0x0

::ffff:172.16.0.22/128 Originating RIB: inet6.3

Metric: 3 Node path count: 1

Forwarding nexthops: 1

Nexthop: 10.1.0.3 via em4.0

BGP Preference: 170/-101

Next hop type: Indirect, Next hop index: 0

Address: 0xd1d6670

Next-hop reference count: 3

Source: 172.16.0.202

Next hop type: Router, Next hop index: 571

Next hop: 10.1.0.3 via em4.0, selected

Label-switched-path TO_PE2

Label operation: Push 2, Push 299824(top)

Label TTL action: prop-ttl, prop-ttl(top)

Load balance label: Label 2: None; Label 299824: None;

Label element ptr: 0xd1d65a0

Label parent element ptr: 0xb498d80

Label element references: 1

Label element child references: 0

Label element lsp id: 0

Session Id: 0x0

Protocol next hop: ::ffff:172.16.0.22

Label operation: Push 2

Label TTL action: prop-ttl

Load balance label: Label 2: None;

Indirect next hop: 0xb715dc0 131071 INH Session ID: 0x0

State: <NotBest Int Ext>

Inactive reason: Not Best in its group – Update source

Local AS: 65000 Peer AS: 65000

Age: 52:58 Metric2: 3

Validation State: unverified

Task: BGP_65000.172.16.0.202

AS path: 64513 I (Originator)

Cluster list: 172.16.0.202

Originator ID: 172.16.0.22

Accepted

Route Label: 2

Localpref: 100

Router ID: 172.16.0.202

Indirect next hops: 1

Protocol next hop: ::ffff:172.16.0.22 Metric: 3

Label operation: Push 2

Label TTL action: prop-ttl

Load balance label: Label 2: None;

Indirect next hop: 0xb715dc0 131071 INH Session ID: 0x0

Indirect path forwarding next hops: 1

Next hop type: Router

Next hop: 10.1.0.3 via em4.0

Session Id: 0x0

::ffff:172.16.0.22/128 Originating RIB: inet6.3

Metric: 3 Node path count: 1

Forwarding nexthops: 1

Nexthop: 10.1.0.3 via em4.0

root@PE1>;

root@P1>; show route

inet.0: 15 destinations, 15 routes (15 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

10.1.0.2/31 *[Direct/0] 01:07:52

> via em1.0

10.1.0.3/32 *[Local/0] 01:07:52

Local via em1.0

10.1.0.4/31 *[Direct/0] 01:07:52

> via em0.0

10.1.0.4/32 *[Local/0] 01:07:52

Local via em0.0

10.1.0.6/31 *[OSPF/10] 01:06:58, metric 2

> to 10.1.0.5 via em0.0

10.1.0.10/31 *[Direct/0] 01:07:52

> via em3.0

10.1.0.10/32 *[Local/0] 01:07:52

Local via em3.0

10.1.0.12/31 *[OSPF/10] 01:06:58, metric 2

> to 10.1.0.5 via em0.0

172.16.0.1/32 *[Direct/0] 01:07:52

> via lo0.0

172.16.0.2/32 *[OSPF/10] 01:06:58, metric 1

> to 10.1.0.5 via em0.0

172.16.0.11/32 *[OSPF/10] 01:07:36, metric 1

> to 10.1.0.2 via em1.0

172.16.0.22/32 *[OSPF/10] 00:54:38, metric 2

> to 10.1.0.5 via em0.0

172.16.0.201/32 *[OSPF/10] 01:03:01, metric 1

> to 10.1.0.11 via em3.0

172.16.0.202/32 *[OSPF/10] 01:02:52, metric 2

> to 10.1.0.5 via em0.0

224.0.0.5/32 *[OSPF/10] 01:07:53, metric 1

MultiRecv

inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

172.16.0.2/32 *[LDP/9] 01:01:43, metric 1

> to 10.1.0.5 via em0.0

172.16.0.11/32 *[LDP/9] 01:01:43, metric 1

> to 10.1.0.2 via em1.0

172.16.0.22/32 *[LDP/9] 00:54:37, metric 2

> to 10.1.0.5 via em0.0, Push 299840

mpls.0: 11 destinations, 11 routes (11 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

0 *[MPLS/0] 01:07:53, metric 1

Receive

1 *[MPLS/0] 01:07:53, metric 1

Receive

2 *[MPLS/0] 01:07:53, metric 1

Receive

299776 *[LDP/9] 01:01:43, metric 1

> to 10.1.0.2 via em1.0, Pop

299776(S=0) *[LDP/9] 01:01:43, metric 1

> to 10.1.0.2 via em1.0, Pop

299792 *[LDP/9] 01:01:43, metric 1

> to 10.1.0.5 via em0.0, Pop

299792(S=0) *[LDP/9] 01:01:43, metric 1

> to 10.1.0.5 via em0.0, Pop

299824 *[RSVP/7/1] 00:54:41, metric 1

> to 10.1.0.5 via em0.0, label-switched-path TO_PE2

299840 *[LDP/9] 00:54:37, metric 1

> to 10.1.0.5 via em0.0, Swap 299840

299856 *[RSVP/7/1] 00:54:23, metric 1

> to 10.1.0.2 via em1.0, label-switched-path TO_PE1

299856(S=0) *[RSVP/7/1] 00:54:23, metric 1

> to 10.1.0.2 via em1.0, label-switched-path TO_PE1

inet6.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

::ffff:172.16.0.2/128

*[LDP/9] 01:01:43, metric 1

> to 10.1.0.5 via em0.0

::ffff:172.16.0.11/128

*[LDP/9] 01:01:43, metric 1

> to 10.1.0.2 via em1.0

::ffff:172.16.0.22/128

*[LDP/9] 00:54:37, metric 2

> to 10.1.0.5 via em0.0, Push 299840

root@P1>;

root@P2>; show route

inet.0: 15 destinations, 15 routes (15 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

10.1.0.2/31 *[OSPF/10] 01:10:38, metric 2

> to 10.1.0.4 via em0.0

10.1.0.4/31 *[Direct/0] 01:11:25

> via em0.0

10.1.0.5/32 *[Local/0] 01:11:25

Local via em0.0

10.1.0.6/31 *[Direct/0] 01:11:25

> via em1.0

10.1.0.6/32 *[Local/0] 01:11:25

Local via em1.0

10.1.0.10/31 *[OSPF/10] 01:10:38, metric 2

> to 10.1.0.4 via em0.0

10.1.0.12/31 *[Direct/0] 01:11:25

> via em3.0

10.1.0.12/32 *[Local/0] 01:11:25

Local via em3.0

172.16.0.1/32 *[OSPF/10] 01:10:38, metric 1

> to 10.1.0.4 via em0.0

172.16.0.2/32 *[Direct/0] 01:11:25

> via lo0.0

172.16.0.11/32 *[OSPF/10] 01:10:38, metric 2

> to 10.1.0.4 via em0.0

172.16.0.22/32 *[OSPF/10] 00:58:21, metric 1

> to 10.1.0.7 via em1.0

172.16.0.201/32 *[OSPF/10] 01:06:42, metric 2

> to 10.1.0.4 via em0.0

172.16.0.202/32 *[OSPF/10] 01:06:32, metric 1

> to 10.1.0.13 via em3.0

224.0.0.5/32 *[OSPF/10] 01:11:26, metric 1

MultiRecv

inet.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

172.16.0.1/32 *[LDP/9] 01:10:37, metric 1

> to 10.1.0.4 via em0.0

172.16.0.11/32 *[LDP/9] 01:10:37, metric 2

> to 10.1.0.4 via em0.0, Push 299776

172.16.0.22/32 *[LDP/9] 00:58:19, metric 1

> to 10.1.0.7 via em1.0

mpls.0: 11 destinations, 11 routes (11 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

0 *[MPLS/0] 01:11:26, metric 1

Receive

1 *[MPLS/0] 01:11:26, metric 1

Receive

2 *[MPLS/0] 01:11:26, metric 1

Receive

299776 *[LDP/9] 01:10:37, metric 1

> to 10.1.0.4 via em0.0, Pop

299776(S=0) *[LDP/9] 01:10:37, metric 1

> to 10.1.0.4 via em0.0, Pop

299792 *[LDP/9] 01:10:37, metric 1

> to 10.1.0.4 via em0.0, Swap 299776

299824 *[RSVP/7/1] 00:58:24, metric 1

> to 10.1.0.7 via em1.0, label-switched-path TO_PE2

299824(S=0) *[RSVP/7/1] 00:58:24, metric 1

> to 10.1.0.7 via em1.0, label-switched-path TO_PE2

299840 *[LDP/9] 00:58:19, metric 1

> to 10.1.0.7 via em1.0, Pop

299840(S=0) *[LDP/9] 00:58:19, metric 1

> to 10.1.0.7 via em1.0, Pop

299856 *[RSVP/7/1] 00:58:06, metric 1

> to 10.1.0.4 via em0.0, label-switched-path TO_PE1

inet6.3: 3 destinations, 3 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

::ffff:172.16.0.1/128

*[LDP/9] 01:10:37, metric 1

> to 10.1.0.4 via em0.0

::ffff:172.16.0.11/128

*[LDP/9] 01:10:37, metric 2

> to 10.1.0.4 via em0.0, Push 299776

::ffff:172.16.0.22/128

*[LDP/9] 00:58:19, metric 1

> to 10.1.0.7 via em1.0

root@P2>;

root@PE2>; show route

inet.0: 18 destinations, 20 routes (18 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

10.1.0.2/31 *[OSPF/10] 01:00:09, metric 3

> to 10.1.0.6 via em2.0

10.1.0.4/31 *[OSPF/10] 01:00:09, metric 2

> to 10.1.0.6 via em2.0

10.1.0.6/31 *[Direct/0] 01:00:24

> via em2.0

10.1.0.7/32 *[Local/0] 01:00:24

Local via em2.0

10.1.0.8/31 *[Direct/0] 01:00:24

> via em4.0

[BGP/170] 00:47:12, localpref 100

AS path: 64513 I, validation-state: unverified

> to 10.1.0.9 via em4.0

10.1.0.8/32 *[Local/0] 01:00:24

Local via em4.0

10.1.0.10/31 *[OSPF/10] 01:00:09, metric 3

> to 10.1.0.6 via em2.0

10.1.0.12/31 *[OSPF/10] 01:00:09, metric 2

> to 10.1.0.6 via em2.0

10.10.10.0/24 *[BGP/170] 00:59:43, localpref 100, from 172.16.0.201

AS path: 64512 I, validation-state: unverified

> to 10.1.0.6 via em2.0, label-switched-path TO_PE1

[BGP/170] 00:59:39, localpref 100, from 172.16.0.202

AS path: 64512 I, validation-state: unverified

> to 10.1.0.6 via em2.0, label-switched-path TO_PE1

10.30.30.0/24 *[BGP/170] 00:47:12, localpref 100

AS path: 64513 I, validation-state: unverified

> to 10.1.0.9 via em4.0

172.16.0.1/32 *[OSPF/10] 01:00:09, metric 2

> to 10.1.0.6 via em2.0

172.16.0.2/32 *[OSPF/10] 01:00:09, metric 1

> to 10.1.0.6 via em2.0

172.16.0.11/32 *[OSPF/10] 01:00:09, metric 3

> to 10.1.0.6 via em2.0

172.16.0.22/32 *[Direct/0] 01:00:23

> via lo0.0

172.16.0.201/32 *[OSPF/10] 01:00:09, metric 3

> to 10.1.0.6 via em2.0

172.16.0.202/32 *[OSPF/10] 01:00:09, metric 2

> to 10.1.0.6 via em2.0

224.0.0.2/32 *[LDP/9] 01:00:24, metric 1

MultiRecv

224.0.0.5/32 *[OSPF/10] 01:00:26, metric 1

MultiRecv

inet.3: 3 destinations, 4 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

172.16.0.1/32 *[LDP/9] 01:00:09, metric 2

> to 10.1.0.6 via em2.0, Push 299776

172.16.0.2/32 *[LDP/9] 01:00:09, metric 1

> to 10.1.0.6 via em2.0

172.16.0.11/32 *[RSVP/7/1] 00:59:55, metric 3

> to 10.1.0.6 via em2.0, label-switched-path TO_PE1

[LDP/9] 01:00:09, metric 3

> to 10.1.0.6 via em2.0, Push 299792

mpls.0: 8 destinations, 8 routes (8 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

0 *[MPLS/0] 01:00:25, metric 1

Receive

1 *[MPLS/0] 01:00:25, metric 1

Receive

2 *[MPLS/0] 01:00:25, metric 1

Receive

13 *[MPLS/0] 01:00:25, metric 1

Receive

299776 *[LDP/9] 01:00:09, metric 1

> to 10.1.0.6 via em2.0, Pop

299776(S=0) *[LDP/9] 01:00:09, metric 1

> to 10.1.0.6 via em2.0, Pop

299792 *[LDP/9] 01:00:09, metric 1

> to 10.1.0.6 via em2.0, Swap 299776

299808 *[LDP/9] 01:00:09, metric 1

> to 10.1.0.6 via em2.0, Swap 299792

inet6.0: 7 destinations, 9 routes (7 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

2001:1111:1111::/64*[BGP/170] 00:59:43, localpref 100, from 172.16.0.201

AS path: 64512 I, validation-state: unverified

> to 10.1.0.6 via em2.0, label-switched-path TO_PE1

[BGP/170] 00:59:39, localpref 100, from 172.16.0.202

AS path: 64512 I, validation-state: unverified

> to 10.1.0.6 via em2.0, label-switched-path TO_PE1

2003:3333:3333::/64*[BGP/170] 00:47:10, localpref 100

AS path: 64513 I, validation-state: unverified

> to fc00::10:3:0:0 via em4.0

fc00::10:3:0:0/127 *[Direct/0] 01:00:16

> via em4.0

[BGP/170] 00:47:10, localpref 100

AS path: 64513 I, validation-state: unverified

> to fc00::10:3:0:0 via em4.0

fc00::10:3:0:1/128 *[Local/0] 01:00:16

Local via em4.0

fe80::e2e:49ff:feba:3102/128

*[Local/0] 01:00:18

Local via em2.0

fe80::e2e:49ff:feba:3104/128

*[Local/0] 01:00:15

Local via em4.0

ff02::2/128 *[INET6/0] 01:00:26

MultiRecv

inet6.3: 3 destinations, 4 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

::ffff:172.16.0.1/128

*[LDP/9] 01:00:09, metric 2

> to 10.1.0.6 via em2.0, Push 299776

::ffff:172.16.0.2/128

*[LDP/9] 01:00:09, metric 1

> to 10.1.0.6 via em2.0

::ffff:172.16.0.11/128

*[RSVP/7/1] 00:59:55, metric 3

> to 10.1.0.6 via em2.0, label-switched-path TO_PE1

[LDP/9] 01:00:09, metric 3

> to 10.1.0.6 via em2.0, Push 299792

root@PE2>;

Si riportano per completezza le tabelle di routing del Router Reflector 1 (il RR-2 è medesimo)

root@RR1>; show route

inet.0: 15 destinations, 17 routes (15 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

10.1.0.2/31 *[OSPF/10] 01:08:41, metric 2

> to 10.1.0.10 via em0.0

10.1.0.4/31 *[OSPF/10] 01:08:41, metric 2

> to 10.1.0.10 via em0.0

10.1.0.6/31 *[OSPF/10] 01:08:41, metric 3

> to 10.1.0.10 via em0.0

10.1.0.10/31 *[Direct/0] 01:08:57

> via em0.0

10.1.0.11/32 *[Local/0] 01:08:57

Local via em0.0

10.1.0.12/31 *[OSPF/10] 01:08:41, metric 3

> to 10.1.0.10 via em0.0

10.10.10.0/24 *[BGP/170] 01:05:41, localpref 100, from 172.16.0.11

AS path: 64512 I

> to 10.1.0.10 via em0.0

[BGP/170] 01:04:32, localpref 100, from 172.16.0.202

AS path: 64512 I

> to 10.1.0.10 via em0.0

10.30.30.0/24 *[BGP/170] 00:48:13, localpref 100, from 172.16.0.22

AS path: 64513 I

> to 10.1.0.10 via em0.0

[BGP/170] 00:48:13, localpref 100, from 172.16.0.202

AS path: 64513 I

> to 10.1.0.10 via em0.0

172.16.0.1/32 *[OSPF/10] 01:08:41, metric 1

> to 10.1.0.10 via em0.0

172.16.0.2/32 *[OSPF/10] 01:08:41, metric 2

> to 10.1.0.10 via em0.0

172.16.0.11/32 *[OSPF/10] 01:08:41, metric 2

> to 10.1.0.10 via em0.0

172.16.0.22/32 *[OSPF/10] 01:00:41, metric 3

> to 10.1.0.10 via em0.0

172.16.0.201/32 *[Direct/0] 01:08:57

> via lo0.0

172.16.0.202/32 *[OSPF/10] 01:08:36, metric 3

> to 10.1.0.10 via em0.0

224.0.0.5/32 *[OSPF/10] 01:08:59, metric 1

MultiRecv

inet6.0: 3 destinations, 5 routes (3 active, 0 holddown, 0 hidden)

+ = Active Route, – = Last Active, * = Both

::/0 *[Static/5] 01:08:57

Discard

2001:1111:1111::/64*[BGP/170] 01:05:41, localpref 100, from 172.16.0.11

AS path: 64512 I

Indirect

[BGP/170] 01:04:32, localpref 100, from 172.16.0.202

AS path: 64512 I

Indirect

2003:3333:3333::/64*[BGP/170] 00:48:11, localpref 100, from 172.16.0.22

AS path: 64513 I

Indirect

[BGP/170] 00:48:11, localpref 100, from 172.16.0.202

AS path: 64513 I

Indirect

root@RR1>;

VERIFICA DI TEST PING H1 to H2

H1> ping 2003:3333:3333:0:2050:79ff:fe66:6801

2003:3333:3333:0:2050:79ff:fe66:6801 icmp6_seq=1 ttl=52 time=10.390 ms

2003:3333:3333:0:2050:79ff:fe66:6801 icmp6_seq=2 ttl=52 time=9.320 ms

2003:3333:3333:0:2050:79ff:fe66:6801 icmp6_seq=3 ttl=52 time=8.957 ms

2003:3333:3333:0:2050:79ff:fe66:6801 icmp6_seq=4 ttl=52 time=8.939 ms

2003:3333:3333:0:2050:79ff:fe66:6801 icmp6_seq=5 ttl=52 time=8.489 ms

H1> show

NAME IP/MASK GATEWAY MAC LPORT RHOST:PORT

H1 10.10.10.10/24 10.10.10.1 00:50:79:66:68:00 20018 127.0.0.1:20019

fe80::250:79ff:fe66:6800/64

2001:1111:1111:0:2050:79ff:fe66:6800/64

VERIFICA DI TEST PING H2 to H1

H2> ping 2001:1111:1111:0:2050:79ff:fe66:6800

2001:1111:1111:0:2050:79ff:fe66:6800 icmp6_seq=1 ttl=52 time=8.786 ms

2001:1111:1111:0:2050:79ff:fe66:6800 icmp6_seq=2 ttl=52 time=7.887 ms

2001:1111:1111:0:2050:79ff:fe66:6800 icmp6_seq=3 ttl=52 time=7.321 ms

2001:1111:1111:0:2050:79ff:fe66:6800 icmp6_seq=4 ttl=52 time=7.351 ms

2001:1111:1111:0:2050:79ff:fe66:6800 icmp6_seq=5 ttl=52 time=7.703 ms

H2> show

NAME IP/MASK GATEWAY MAC LPORT RHOST:PORT

H2 10.30.30.30/24 10.30.30.1 00:50:79:66:68:01 20096 127.0.0.1:20097

fe80::250:79ff:fe66:6801/64

2003:3333:3333:0:2050:79ff:fe66:6801/64