【IPV6】無獨有偶的6VPE-IPV6之MBGP-MPLS-大做戰

時間過得很快，一晃十年過去了，互聯網的IPV4地址也都快被耗盡了，計劃趕不上變化，IPV6部署也在風起雲涌，無論是運營商仍是企業都開始慢慢的部署並實際運用起來。

對於現有IPV4純骨幹網架構來講，融入IPV6流量承載傳輸將變得愈來愈重要。這個文章呢，就是把基於Juniper路由器產品，部署純MPLS域，來承載IPV6流量

爲何基於Juniper路由器來講呢，由於其餘的我都不會，混跡江湖幾年，只會Junos。有些技術文檔，仍是得Google才行，百度一下，分享的人太少。有時間就寫寫作過的Lab或知識點，希

望對有須要的人提供一點幫助。

案例拓撲：

6VPE配置與常規的配置V4的×××相似，相比而言，6VPE的配置稍微多了VRF路由實例配置。 對於PE與PE互聯的接口配置不須要啓用family inet6。

6vpe-ce1側配置：

1. 接口配置

root@Lab:6vpe-ce1# show interfaces | display set

set logical-systems 6vpe-ce1 interfaces ge-0/0/1 unit 14 vlan-id 14

set logical-systems 6vpe-ce1 interfaces ge-0/0/1 unit 14 family inet

set logical-systems 6vpe-ce1 interfaces ge-0/0/1 unit 14 family inet6 address 2001:10:0:14::14/64

set logical-systems 6vpe-ce1 interfaces lo0 unit 14 family inet6 address ::14.14.14.14/128

Note：地址::14.14.14.14/128用來測試CE1和CE2之間互通；

2. 協議配置：

[edit]

root@Lab:6vpe-ce1# show protocols | display set

set logical-systems 6vpe-ce1 protocols bgp group 6vpe type external

set logical-systems 6vpe-ce1 protocols bgp group 6vpe local-address 2001:10:0:14::14

set logical-systems 6vpe-ce1 protocols bgp group 6vpe export send-v6

set logical-systems 6vpe-ce1 protocols bgp group 6vpe neighbor 2001:10:0:14::1 peer-as 100

3. 策略及Routing-options配置

root@Lab:6vpe-ce1# show routing-options | display set

set logical-systems 6vpe-ce1 routing-options router-id 14.14.14.14

set logical-systems 6vpe-ce1 routing-options autonomous-system 200

[edit]

root@Lab:6vpe-ce1# show policy-options | display set

set logical-systems 6vpe-ce1 policy-options policy-statement send-v6 term direct from family inet6

set logical-systems 6vpe-ce1 policy-options policy-statement send-v6 term direct then accept

Note：仍是同樣的，必定要配置Router-id；

PE1側配置：

1. 接口配置

[edit]

root@Lab:pe1# show interfaces ge-0/0/2.14 | display set

set logical-systems pe1 interfaces ge-0/0/2 unit 14 vlan-id 14

set logical-systems pe1 interfaces ge-0/0/2 unit 14 family inet

set logical-systems pe1 interfaces ge-0/0/2 unit 14 family inet6 address 2001:10:0:14::1/64

2. 協議 配置：

root@Lab:pe1# show protocols bgp | display set

set logical-systems pe1 protocols bgp group ibgp type internal

set logical-systems pe1 protocols bgp group ibgp local-address 1.1.1.1

set logical-systems pe1 protocols bgp group ibgp neighbor 4.4.4.4 family inet6-*** unicast

3. 路由實例配置

[edit]

root@Lab:pe1# show routing-instances 6vpe-ce1 | display set

set logical-systems pe1 routing-instances 6vpe-ce1 instance-type vrf

set logical-systems pe1 routing-instances 6vpe-ce1 interface ge-0/0/2.14

set logical-systems pe1 routing-instances 6vpe-ce1 route-distinguisher 100:1

set logical-systems pe1 routing-instances 6vpe-ce1 vrf-target target:100:1

set logical-systems pe1 routing-instances 6vpe-ce1 routing-options router-id 15.15.15.15

set logical-systems pe1 routing-instances 6vpe-ce1 protocols bgp group vpe type external

set logical-systems pe1 routing-instances 6vpe-ce1 protocols bgp group vpe local-address 2001:10:0:14::1

set logical-systems pe1 routing-instances 6vpe-ce1 protocols bgp group vpe neighbor 2001:10:0:14::14 family inet6 unicast

set logical-systems pe1 routing-instances 6vpe-ce1 protocols bgp group vpe neighbor 2001:10:0:14::14 peer-as 200

Note：仍是同樣的，必定要配置Router-id；

中間P一、P2保持先前的MPLS-LDP-OSPF配置，PE二、6VPE-CE2配置與PE1及6VPE-CE1的配置相似。

狀態確認：

1. 6VPE-CE1側：

[edit]

root@Lab:6vpe-ce1# run show bgp summary

Groups: 1 Peers: 1 Down peers: 0

Table          Tot Paths  Act Paths Suppressed    History Damp State    Pending

inet6.0

2          2          0          0          0          0

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

2001:10:0:14::1         100         84         84       0       0       36:05 Establ

inet6.0: 2/2/2/0

[edit]

root@Lab:6vpe-ce1# run show route receive-protocol bgp 2001:10:0:14::1

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

Prefix                  Nexthop              MED     Lclpref    AS path

* ::17.17.17.17/128       2001:10:0:14::1                         100 300 I

* 2001:10:0:15::/64       2001:10:0:14::1                         100 I

2. PE1側狀態確認

root@Lab:pe1# run show route receive-protocol bgp 4.4.4.4 detail

bgp.l3***-inet6.0: 2 destinations, 2 routes (2 active, 0 holddown, 0 hidden)

* 100:1:::17.17.17.17/128 (1 entry, 0 announced)

Import Accepted

Route Distinguisher: 100:1

××× Label: 2×××0

Nexthop: ::ffff:4.4.4.4

Localpref: 100

AS path: 300 I

Communities: target:100:1

* 100:1:2001:10:0:15::/64 (1 entry, 0 announced)

Import Accepted

Route Distinguisher: 100:1

××× Label: 2×××0

Nexthop: ::ffff:4.4.4.4

Localpref: 100

AS path: I

Communities: target:100:1

3. 測試從6VPE-CE1到CE2的互通性驗證

[edit]

root@Lab:6vpe-ce1# run ping ::17.17.17.17 rapid count 5

PING6(56=40+8+8 bytes) 2001:10:0:14::14 --> ::17.17.17.17

!!!!!

--- ::17.17.17.17 ping6 statistics ---

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

round-trip min/avg/max/std-dev = 6.122/8.251/13.034/2.501 ms

[edit]

root@Lab:6vpe-ce1# run ping 2001:10:0:15::15 rapid count 5

PING6(56=40+8+8 bytes) 2001:10:0:14::14 --> 2001:10:0:15::15

!!!!!

--- 2001:10:0:15::15 ping6 statistics ---

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

round-trip min/avg/max/std-dev = 3.882/45.782/211.051/82.635 ms