[a-nsp] 7050SX MPLS ?

[Patrik Olsson]

Arista switch ports have L2 jumbo frames by default (9214 bytes).

Routed ports (SVI and non switch ports) have default IP MTU 1500 bytes.

So the uplink between 7050SX and ASR9k need to be IP MTU enough to have room for any VLAN headers aswell as MPLS tags.

7050SX only supports LDP L2circuits.

Thx
Patrik


> On 26 Jan 2021, at 07:45, Mark Tinka <mark.tinka at seacom.com> wrote:
> 
> 
> 
> On 1/25/21 22:22, Bryan Holloway wrote:
> 
>> Yeah, I may not have described this very well ...
>> 
>> ( And thank you to Gert who indicated the same. :) )
>> 
>> Consider a 7050SX (PE) sitting downstream from an ASR9k (P). /30 between them running IS-IS.
>> 
>> Customer hangs off of a VLAN on the 7050SX. I can turn up MPLS/LDP just fine on the 7050 -- talks happily to the ASR -- but then I can't push full-payload packets (1500) to customer's VLAN from upstream RRs (or from anywhere, for that matter ...) Except from next-hop.
>> 
>> Spun up a vEOS running 4.25.0 and seeing the same behavior, but I honestly don't know what hardware it's trying to emulate ... (Thank you for that suggestion, Sabri, re: older firmware.)
>> 
>> Hope this better explains things ...
> 
> Curious - are you running Jumbo frames on all interfaces on both devices?
> 
> Mark.
> 
> -- 
> arista-nsp mailing list
> arista-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/arista-nsp