6.3 MP-BGP - IPv6

Hi everyone,

 

I'm working on BGP for IPv6 routing with the ISP and have run into an issue. Does this seem to be a gns3 issue?

 

TASK

The ISP at AS 65123 is now offering IPv6 Internet connectivity and has been pre-configured to peer with R6 via IPv6 BGP.

  • Configure the network using BGP AS 65006 as follows:
    • Configure R6 to peer with the ISP over IPv6. The ISP’s edge router is using an IPv6 address of 2001:202:4:60::1.
    • The ISP is expecting the EBGP peering to come from AS 65600. Ensure that AS 65006 does not appear on routes sent to or received from the ISP.

 

router bgp 65006

 bgp log-neighbor-changes

 no bgp default ipv4-unicast

 neighbor IPV6_PEER peer-group

 neighbor IPV6_PEER remote-as 65006

 neighbor IPV6_PEER update-source Loopback0

 neighbor ::192:122:3:3 peer-group IPV6_PEER

 neighbor ::192:122:3:4 peer-group IPV6_PEER

 neighbor ::192:122:3:5 peer-group IPV6_PEER

 neighbor 2001:202:4:60::1 remote-as 65123

 neighbor 2001:202:4:60::1 local-as 65000 no-prepend replace-as

 neighbor 2001:202:4:60::1 shutdown

 neighbor 202.4.60.1 remote-as 65123

 !

 address-family ipv4

  network 89.211.116.0 mask 255.255.255.128

  network 89.211.117.0 mask 255.255.255.128

  neighbor 202.4.60.1 activate

 exit-address-family

 !

 address-family ipv6

  network ::192:122:3:6/128

  neighbor IPV6_PEER route-reflector-client

  neighbor IPV6_PEER next-hop-self

  neighbor ::192:122:3:3 activate

  neighbor ::192:122:3:4 activate

  neighbor ::192:122:3:5 activate

  neighbor 2001:202:4:60::1 activate

 exit-address-family

R6(config-router)#

R6(config-router)#

R6(config-router)#no  neighbor 2001:202:4:60::1 shutdown

R6(config-router)#

*Oct 22 00:58:05.507: %BGP-3-NOTIFICATION: received from neighbor 2001:202:4:60::1 active 2/2 (peer in wrong AS) 2 bytes FDE8

R6(config-router)#

*Oct 22 00:58:05.507: %BGP-5-NBR_RESET: Neighbor 2001:202:4:60::1 active reset (BGP Notification received)

*Oct 22 00:58:05.507: %BGP-5-ADJCHANGE: neighbor 2001:202:4:60::1 active Down BGP Notification received

*Oct 22 00:58:05.507: %BGP_SESSION-5-ADJCHANGE: neighbor 2001:202:4:60::1 IPv6 Unicast topology base removed from session  BGP Notification received

*Oct 22 00:58:06.253: %BGP-3-NOTIFICATION: received from neighbor 2001:202:4:60::1 passive 2/2 (peer in wrong AS) 2 bytes FDE8

R6(config-router)#

*Oct 22 00:58:06.253: %BGP-5-NBR_RESET: Neighbor 2001:202:4:60::1 passive reset (BGP Notification received)

*Oct 22 00:58:06.255: %BGP-5-ADJCHANGE: neighbor 2001:202:4:60::1 passive Down BGP Notification received

*Oct 22 00:58:06.255: %BGP_SESSION-5-ADJCHANGE: neighbor 2001:202:4:60::1 IPv6 Unicast topology base removed from session  BGP Notification received

R6(config-router)#

*Oct 22 00:58:15.801: %BGP-3-NOTIFICATION: received from neighbor 2001:202:4:60::1 active 2/2 (peer in wrong AS) 2 bytes FDE8

R6(config-router)#

*Oct 22 00:58:15.801: %BGP-5-NBR_RESET: Neighbor 2001:202:4:60::1 active reset (BGP Notification received)

*Oct 22 00:58:15.801: %BGP-5-ADJCHANGE: neighbor 2001:202:4:60::1 active Down BGP Notification received

*Oct 22 00:58:15.801: %BGP_SESSION-5-ADJCHANGE: neighbor 2001:202:4:60::1 IPv6 Unicast topology base removed from session  BGP Notification received

R6(config-router)#

Comments

  • You have your configuration wrong, not a GNS3 issue =)...Did you log into the internet router to check the logs? It would have also been complaining, only the logs would be much more helpful.

     neighbor 2001:202:4:60::1 local-as 65000 no-prepend replace-as

     

    The ISP is expecting the EBGP peering to come from AS 65600

     

    65000 vs 65600

     

     

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