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

2021-05-04 Thread Adam Thompson
LOLOLOL. “%VXLAN-4-IPV6_UNDERLAY_UNSUPPORTED: VXLAN encapsulation using IPv6 VTEP addresses is not supported on this platform” Guess it’s going to be a non-issue for me, at this time, since VxLAN was the main reason for this entire setup… Thanks for all the responses! -Adam Adam Thompson Consult

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

2021-05-04 Thread Tarko Tikan
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

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

2021-05-04 Thread aaron1
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

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

2021-05-04 Thread Mark Tinka
On 5/4/21 17:34, Saku Ytti wrote: I don't think you are, I read like an opinion piece so it's inherently not right or wrong. I don't have the same experience and I consider forcing LLA a blessing in limiting attack vectors and I personally don't see downsides as all addresses are gibbering to

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

2021-05-04 Thread Saku Ytti
On Tue, 4 May 2021 at 18:28, Adam Thompson wrote: > I don't believe APIPA and Link-Local are precisely equivalent, but I agree > it's the closest thing IPv4 has. IS-IS/IPv4 would Agreed, APIPA is using link-local, but they're not the same. APIPA is an application or process which needs the use

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

2021-05-04 Thread Adam Thompson
I don't believe APIPA and Link-Local are precisely equivalent, but I agree it's the closest thing IPv4 has. IS-IS/IPv4 would presumably use APIPA addresses if nothing else were assigned to the interface, based on my reading of the RFC. I'm unsure what the RFC authors think should happen in a H

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

2021-05-04 Thread Saku Ytti
On Tue, 4 May 2021 at 18:15, Adam Thompson wrote: Hey Adam, > I don't see any rationale in RFC 5308 for why the HELLO packet may only > contain the LLA - does anyone know/remember why? (I'm hoping that > understanding the rationale will make this an easier pill to swallow.) > Obviously this

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

2021-05-04 Thread Adam Thompson
Thank you, both! ...that kinda sucks, though. I don't see any rationale in RFC 5308 for why the HELLO packet may only contain the LLA - does anyone know/remember why? (I'm hoping that understanding the rationale will make this an easier pill to swallow.) Obviously this behaviour/requirement