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
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