ipv6 BGP routing

[chaname]

I'm testing the ipv6 BGP routing.

I have configured as below, but communication is not working.

What am I missing?

In addition, what are the settings for best practices of ipv6 routing?

Thanks for your help.

[Harold Ritter · Accepted solution]

Hi @chaname ,

2010::1/126 and 3010::1/126 are not part of the same subnet, so they can't communicate with each other.

It would work if you used 3010::1/126 on one side and 3010::2/126 on the other, as these two IPv6 addresses are part of the same subnet.

You need to configure a common subnet between IOU_R-2 and IOU_R-3 for the two routers to have IPv6 connectivity and for the BGP session to come up. I would also recommend using using RFC3848 IPv6 addresses (2001:db8::/32), which I normally used for lab testing. Please configure something as follow:

IOU_R-2:

interface e0/0

ipv6 address 2001:db8::1/64

!

router bgp 65000

no bgp default ipv4-unicast

neighbor 2001:db8::2 remote-as 64600

address-family ipv6 unicast

neighbor 2001:db8::2 active

!

IOU_R-3:

interface e0/0

ipv6 address 2001:db8::2/64

!

router bgp 64600

no bgp default ipv4-unicast

neighbor 2001:db8::1 remote-as 65000

address-family ipv6 unicast

neighbor 2001:db8::1 active

!

Regards,