From: ashwin kohli (ashwin_kohli1@yahoo.com)
Date: Wed Aug 10 2005 - 18:27:15 GMT-3
Rohan,
Not too sure why you are having issues, as you don't
need to use a route-map or prefix-list. Just use the
global unicast address as your next-hop. Without
knowing your configuration further, I have tried to
list the basic steps you will need to ensure IBGP IPv6
peer relationship configuration:
STEP 1
-------
BGP Router ID <router-id> This must be manually
configured on every router. This is usually an IPv4
address and by default BGP uses the highest loopback
IPv4 address on the router.
STEP 2
------
no bgp default ipv4-unicast By default, IPv4 address
family is advertised by each BGP routing session when
the neighbor remote-as command is configured.
STEP 3
-------
neighbor <ipv6-address> remote-as <AS> - IPv6 global
unicast address and the autonomous system of the EBGP
or IBGP peer must be configured.
STEP 4
------
neighbor <link-local> update-source <interface> For
IBGP peers using the physical interface must be used
to establish an IBGP relationship, you must specify
the a link-local address or a global unicast address
on physical interface through which the neighbor
relationship will be established. There is no need to
use a route-map or prefix-list.
STEP 5
-------
address-family ipv6 unicast The BGP commands
supported in address family configuration mode
configure the same functionality as the BGP commands
supported in router configuration mode
STEP 6
-------
neighbor <ipv6-address> activate This command
enables the IPv6 neighbor to exchange prefixes for the
IPv6 address family with the local router.
STEP 7
------
Network <network/prefix> - This command is used to
advertise IPv6 networks to the peers
To ensure that your configuration works, turn on
"debug bgp ipv6" to ensure the correct BGP states are
being traversed through.
I hope that helps. Let me know if you have further
questions.
Ashwin Kohli
CCIE#8877 (R&S, Security)
http://www.ccbootcamp.com/nliipv6labguide.asp
http://www.ccbootcamp.com/nlicciecore.asp
--- "Rohan Grover (rohang)" <rohang@cisco.com> wrote:
> Hi,
>
> Would really appreciate if someone could clear this
> doubt
>
> I'm a little confused by this feature. I understand
> that we need the
> update source command with the interface and a
> route-map used to set the
> next hop to the global unicast address.
> The problem is that, what prefix list should be used
> to match on the
> route-map? I mean what IPv6 address am i matching
> here?
>
> Thanks
> Rohan
>
>
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