Re: BGP with link-local addresses

From: Jim (firstnamejim@gmail.com)
Date: Fri Jan 12 2007 - 02:39:30 ART


I don't have any problem using the link-local address, please see config
below.

r1:
ipv6 unicast-routing
interface Loopback0
 ip address 2.2.1.1 255.255.255.0
!
interface Serial0/0.1 point-to-point
 ipv6 address FEC0::2/64
 ipv6 address FE80::1 link-local
 frame-relay interface-dlci 201
!
router bgp 1
 no synchronization
 bgp log-neighbor-changes
 neighbor FE80::2 remote-as 2
 neighbor FE80::2 update-source Serial0/0.1
 no neighbor FE80::2 activate
 no auto-summary
 !
 address-family ipv6
 neighbor FE80::2 activate
 exit-address-family
!

####
r2:
ipv6 unicast-routing
interface Serial0/0.1 point-to-point
 ipv6 address FEC0::1/64
 ipv6 address FE80::2 link-local
 frame-relay interface-dlci 210
!
router bgp 2
 no synchronization
 bgp log-neighbor-changes
 neighbor FE80::1 remote-as 1
 neighbor FE80::1 update-source Serial0/0.1
 no neighbor FE80::1 activate
 no auto-summary
 !
 address-family ipv6
 neighbor FE80::1 activate
 exit-address-family

### show output
r1:
# show bgp ipv6 summ
BGP router identifier 2.2.1.1, local AS number 1
BGP table version is 1, main routing table version 1

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
FE80::2 4 2 5 5 1 0 0 00:02:22 0

r1(config)#do sh bgp ipv6 summ
BGP router identifier 2.2.1.1, local AS number 1
BGP table version is 1, main routing table version 1

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
FE80::2 4 2 5 5 1 0 0 00:02:22 0
% NOTE: This command is deprecated. Please use 'show bgp ipv6 unicast'

r1(config)#do sh bgp ipv6 uni nei
BGP neighbor is FE80::2, remote AS 2, external link
 ...
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 1
Local host: FE80::1, Local port: 15843
Foreign host: FE80::2, Foreign port: 179

r2(config-router-af)#do show bgp ipv6 uni summ
BGP router identifier 2.2.13.2, local AS number 2
BGP table version is 1, main routing table version 1

Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down
State/PfxRcd
FE80::1 4 1 11 11 1 0 0 00:08:46 0
r2(config-router-af)#do show bgp ipv6 uni nei
BGP neighbor is FE80::1, remote AS 1, external link
...
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Connection is ECN Disabled
Local host: FE80::2, Local port: 179
Foreign host: FE80::1, Foreign port: 15843

On 1/11/07, Bit Gossip <bit.gossip@chello.nl> wrote:
>
> Group,
> there is no way I can bring up a BGP session using IPv6 link-local
> addresses over a point-point FR link. Same story for a GRE tunnel.
> While it works fine over a ethernet connection.
>
> I noticed that even if I can ping the link-local address of the peer, I
> can not telnet it; maybe this is the problem.
>
> Did someone succeeded in this task?
>
> Thanks,
> Luca
>
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This archive was generated by hypermail 2.1.4 : Thu Feb 08 2007 - 23:46:56 ART