[c-nsp] IPv6 BGP on IOS-XR

[Lee Starnes]

Hi Andrew,

The hold down route did it. Forgot that I had not added it for this block.

Thanks.

-Lee

On Thu, Jul 28, 2011 at 12:48 PM, Koch, Andrew
<andrew.koch at tdstelecom.com>wrote:

> You will need to get the /32 into BGP first.  Then you can let it out the
> peering session.
>
> 1. A matching IGP route must exist.  Most networks will use an anchor route
> for their aggregate.  You can also have a matching IGP route of exact same
> prefix length.
> router static
>  address-family ipv6 unicast
>  2001:db8::/32 Null0 254 description anchor_route
>
> 2. Network statement to get route into BGP (unless redistributing IGP route
> into BGP)
> router bgp 65526
>  address-family ipv6 unicast
>  network 2001:db8::/32
>
> 3. Ensure you see your own route in the local BGP table
> RP/0/RP1/CPU0:Router#show bgp ipv6 unicast 2001:db8::/32
> BGP routing table entry for 2001:db8::/32
> Versions:
>  Process           bRIB/RIB  SendTblVer
>  Speaker                  2           2
> Paths: (1 available, best #1)
>  Advertised to update-groups (with more than one peer):
>    0.3 0.4
>  Path #1: Received by speaker 0
>  Local
>    :: from :: (192.0.2.1)
>      Origin IGP, metric 0, localpref 100, weight 32768, valid, local, best
> RP/0/RP1/CPU0:Router#
>
>
> 4. Set some type of route-policy to allow your block out to peers
> prefix-set OUT-v6
>  2001:db8::/32
> end-set
>
> route-policy ALLOW-OUT-v6
>  if destination in OUT-v6 then
>    pass
>  else
>    drop
>  endif
> end-policy
>
> 5. Finally, Set policy to allow prefix out on your session
> router bgp 65526
> neighbor 2001:db8:ffff::50
>  remote-as 65525
>  description My-Peer
>  address-family ipv6 unicast
>   route-policy ALLOW-OUT-v6 out
>
>
>
> Keep in mind that this is a very simplified example.  You should make sure
> to take proper precautions when exchanging routes.  This includes preventing
> martian prefixes from being exchanged, any other type of route tagging,
> filtering, max-prefix protections, etc.
>
> This IOS-XR software installation and configuration guide page should be
> kept handy for reference - look for your equipment type, release and general
> topic.  In this case look for the routing configuration guide.
>
> http://www.cisco.com/en/US/products/ps5845/products_installation_and_configuration_guides_list.html
>
> HTH,
> Andy
>