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Packet loss on 3525 GBIC link

I'm trying to develop a test scenario for pass/fail testing of some questionable GBICs. We've had a series of both complete and partial (one phase of three) power failures, and some of the links did not come up when power was restored. My test-bed is 2 3524-pwr switches, with an uplink to the production network, but no hosts on either switch. I have the 2 switches linked by SX GBICs with a 2-meter SC-SC fiber patch cable. I thought I could just do continuous pings between the 2 switches, but I'm seeing some loss even with known new GBICs. If I send 10,000 1K pings from one switch to the other with no user traffic, I expected to see 100% response, but every time I'm losing a few. Is there a reason for this, and how many lost pings can I consider acceptable?

1 REPLY
New Member

Re: Packet loss on 3525 GBIC link

Hi ALMD

Even though this is not a Cat4500 question, I'll take a stab. Check the sh interfaces output for any clues, like CRC's. Missing a few pings out of 10,000 would not have any material effect on L2 or L3 protocols.

John

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