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JunosE 11.2.x BGP and MPLS Configuration Guide
Configuring IPv6 Tunneling over IPv4 MPLS
478
IPv6 unlabeled routes are exchanged through the external MP-BGP session between
ASBR 1 and ASBR 2. Interdomain MPLS tunnels spanning multiple ASs are not supported.
To configure IPv6 tunneling over MPLS:
On PE 1, configure both an IPv4 and an IPv6 interface toward the CE router. Use an
1.
IPv4-compatible IPv6 address.
host1(config)#interface atm2/0.1
host1(config)#atm pvc 1 0 1 aal5snap
host1(config)#ip address 11.19.1.1 255.255.255.0
host1(config)#ipv6 address ::11.19.1.1/126
On PE 1, configure an IPv4 interface facing the core.
2.
NOTE: For forwarding to work, you must configure at least one IPv6 interface on each
line module where MPLS-encapsulated IPv6 traffic is expected. You can easily
accomplish this by also configuring an IPv6 address on the core-facing interface.
host1(config)#interface atm3/0.1
host1(config)#atm pvc 30 0 30 aal5snap
host1(config)#ip address 10.10.10.1 255.255.255.0
host1(config)#ip address ::10.10.10.1/120
On PE 1, configure a loopback interface.
3.
host1(config)#interface loopback 1
host1(config)#ip address 1.1.1.1 255.255.255.0
On PE 1, configure an IPv4 IGP and an MPLS signaling protocol in the core.
4.
On PE 1, set up a base tunnel, or verify that one exists between the loopback addresses
5.
on the PE routers.
On PE 1, configure MP-BGP.
6.
a.
Enable BGP.
host1(config)#router bgp 100
b.
Configure the MP-BGP CE and PE neighbors.
host1(config-router)#neighbor 11.19.1.2 remote-as 65000
host1(config-router)#neighbor 2.2.2.2 remote-as 100
c.
Activate the neighbors in the IPv6 address-family.
host1(config-router)#address-family ipv6 unicast
host1(config-router-af)#neighbor 11.19.1.2 activate
host1(config-router-af)#neighbor 2.2.2.2 activate
d.
Configure the MP-BGP PE neighbor to send labeled IPv6 prefixes.
host1(config-router-af)#neighbor 2.2.2.2 send-label
host1(config-router-af)#neighbor 2.2.2.2 update-source loopback 1
host1(config-router-af)#neighbor 2.2.2.2 next-hop-self
host1(config-router-af)#exit-address-family
Copyright © 2010, Juniper Networks, Inc.
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