[j-nsp] Traffic delayed

[james list]

Dear experts

I’ve a strange issue.

Our customer replaced two L2/3 switches (C6500) where a pure L2 and L3
(hsrp) environment was set-up with a couple of new MX9k running the same L2
and L3 services but those two MX are running MPLS/VPLS to transport L3/L2
frames. Access switches are QFX5k connected to MX MPLS PE.

Now the main issue: the customer every almost 30 minutes (sometimes 28
sometimes 33 minutes sometimes 30) detect some frames received with a delay
of 3-600 milliseconds. The customer is a trading venue..

It seems like something slow down the forwarding processing, now I know
Juniper separate forwarding and control, but I was thinking to OSPF LSA
refresh or something like that since the frequency is around 30 minutes..

Can anybody help me in sorting out which can be the main point here ?

Thanks in advance

Cheers,

James