05-27-2021 08:19 PM
Greetings,
I have a 10G link that keeps flapping between two sites connected through 2x Nexus 3548 and 5672.
How can I rule out that the SFP are not the problem ?
Thanks,
Edouard.
Solved! Go to Solution.
05-28-2021 12:26 AM
Hi @EdouardZorrilla0939 ,
When it comes to Layer 1 issues, these are the steps you can follow:
1. Change the fiber/cable.
2. Change the SFP one side at a time (both sides, if you cannot do a lot of tests. Doing one side at a time, gives you more granularity). Also, verifying the "show interface transceiver details" can indicate if the power levels are ok.
3. Change the port, one side at a time, preferably and if possible on different ASIC (not the case for N3k)
4. Change the NIC (if one side is a server)
Hope it helps,
Sergiu
05-28-2021 12:26 AM
Hi @EdouardZorrilla0939 ,
When it comes to Layer 1 issues, these are the steps you can follow:
1. Change the fiber/cable.
2. Change the SFP one side at a time (both sides, if you cannot do a lot of tests. Doing one side at a time, gives you more granularity). Also, verifying the "show interface transceiver details" can indicate if the power levels are ok.
3. Change the port, one side at a time, preferably and if possible on different ASIC (not the case for N3k)
4. Change the NIC (if one side is a server)
Hope it helps,
Sergiu
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