10-10-2012 12:43 AM - edited 03-07-2019 09:22 AM
hi ,
ive recived an ipv6 prefix from ripe
2xxx:c40::/32
im using bgp nehigbourships whch all is IPV4 .
assume my router is R1 and the neighbour one is R2
R1------------------R2--------------------internet
the 1st thing is to put ipv6 on both my router and the neighbour router ans this is an easy step , but im concentrating about commands to be put under router config ,
i tried to type ipv6 router bgp , but not working !!!!
how to advertise my new ipv6 subnet ???
regards
10-10-2012 12:54 AM
Hello Ahmed,
the router bgp process is only one, all you need is to move to BGP multiprotocol
router bgp
! commands defining BGP sessions are under bgp process
neighbor x.x.x.x remote-as YYY
address-family ipv4 unicast
! standard IPV4 here
neighbor x.x.x.x activate
neighbor x.x.x.x send-community
address-family ipv6 unicast
neighbor x.x.x.x activate
neighbor x.x.x.x send-community
>>> network command for IPv6 prefix here
two important notes:
the neighbor has to be activated per address-family with neighbor x.x.x.x activate
a BGP session using IPv4 endpoints can also carry IPv6 NLRI network layer reachability information
Hope to help
Giuseppe
10-10-2012 02:17 AM
hi ,
do you mean that the two bgp routers endpoint dont need to put ipv6 ips on thier interfaces ??
i tried :
R6(config-router-af)#neighbor 2000::2 activate
% Specify remote-as or peer-group commands first
10-10-2012 02:38 AM
Hi,
yes BGP is using TCP to transport the updates and it can send IPv6 prefixes update over IPv4 or IPv4 prefixes over IPv6.
As you've got only IPv4 neighbours you can't activate an IPv6 neighbour so specify your IPv4 neighbour address instead.
then do the network command or redistribution to put your IPv6 prefixes into the BGP table under the IPv6 family.
Regards.
Alain
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10-10-2012 03:05 AM
Hello Ahmed,
you need first to define the neighbor under router bgp as I have explained in my previous post
That is :
router bgp
neighbor 2000::2 remote-as YYYY
address-family ipv6 unicast
neighbor 2000::2 activate
Hope to help
Giuseppe
10-11-2012 10:49 AM
thanks
Giuseppe ,
u r great
regards
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