how to adversite ipv6 prefix using bgp ???

[Dr.X]

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

[Giuseppe Larosa]

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

[Dr.X]

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

[cadet alain]

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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[Giuseppe Larosa]

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

[Dr.X]

thanks 

Giuseppe ,

u r great

regards