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Re: IS-IS and IPv6 LLA next-hop - just Arista, or everyone?


From: Tarko Tikan <tarko () lanparty ee>
Date: Tue, 4 May 2021 20:25:14 +0300

hey,

I did an L3VPN over SRv6 test recently using IS-IS as the IGP.  I
thought it was quite cool that I didn't configure any IPv6 addressing
at all in the core... simply enabled v6 on interfaces and allowed
FE80 LL's to run... IS-IS neighbored up... then added a mp-ibgp v6
loopback (rfc 4193) to the PE's and let BGP neighbor up... L3VPN
worked over SRv6 (of course with all that weird (new) locator
magic).

For less adventurous - you can also do unnumbered ISIS or OSPF. It works equally as good and enables one to do plug-and-play SR-MPLS like you would do layer-2 network.

--
tarko


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