[a-nsp] 7050SX MPLS ?

[Bryan Holloway]

On 1/26/21 12:27 PM, Mark Tinka wrote:
> 
> 
> On 1/26/21 13:17, Patrik Olsson wrote:
> 
>> 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.
> 
> Because what the OP describes seems like an MTU issue on the interface 
> that is running MPLS (physical or virtual).
> 
> Would raising that be the simple solution?
> 
> Mark.

Yeah, I've been bitten by that before ...

While the SVI /30 is IP MTU 1500, the L2 MTU (for tagging, MPLS, etc.) 
is 9200.

Sounds like the 7050SX isn't hip enough to be a proper PE, which was my 
initial suspicion.