[j-nsp] Frame loss during Ethernet test

[Saku Ytti]

On (2012-01-24 11:03 +0100), Gökhan Gümüş wrote:

> We are terminating service with ccc configuration.

> At remote end, we have a hardware loop and customer connects its tester to
> A-end sends traffic.
> When we run the test for 2-3 mins, we have no frame loss but at longer test
> we start to see 10-20 frame loss.

> Frames are lost when our PE puts sent test traffic into corrresponding LSP
> but there is no issue in our LSP.

I guess this is ethernet over MPLS, point-to-point service then? You're not
explicitly stating it though, but I'm working on that assumption.

One possible cause for this is, that customer is doing wire-rate traffic
and your access to customer is same capacity as your backbone. Backbone
needs considerably more overhead (another set of MAC addresses, at least
two labels) so wire rate at customer port would be excessive rate in core,
if this is the case, you should see latency starting to increase linearly
right from the start and then eventually when buffers are exhausted packet
drops.

-- 
  ++ytti