[me3600] L2 control protocols rate-limit on ingress???

[Carlos A. Silva]

Hi,

A customer is testing a pseudowire between an ME3600 and an ASR9001. PW works without a problem, but they found a curious situation. They decided to generate l2 control protocol flows within that PW (STP, CDP, etc).

In the TG-->ASR9001--->ME3600-->TG direction, all flows pass without a problem. But in the TG-->ME3600-->ASR9001--->TG, flow are capping at 2000 packets per second (~2.5M). Is this something that the ME3600 does by default? If yes, can this behavior be changed?

Mind you, there's absolutely no QoS-type rate-limit anywhere. Just your basic PW that's working perfectly, except for this curious note.

Thanks in advance!

c.

[sreenivasgajula]

Assuming you are tunneling those l2protocols across your PW? If yes, you might be right about the rate-limit. For ASR901 platform, there are such rate-limits and I'm pretty sure ME3600 being in the same portfolio has such limitations. I would recommend contacting TAC if you need specific numbers.

Here is what I know about ASR901:

• Layer 2 protocol tunneling supports a maximum packet rate of 10 packets ps (per interface) for a protocol, and 100 packets ps for all protocols (on all interfaces).