Hi,
I have the following problem and I've reached a point where I don't know what to do anymore.
Scenario:
2 x Cisco 4500-X in VSS mode.
2 x VSL Ports - 10G with SFP+ (Proline SFP-10G-SR-PRO)
1 x Dual-active fast-hello Port - 1G with SFP (Proline GLC-SX-MMD-PRO)
Situation 1:
With VSS configured, I reboot both 4500-X and only of the two VSL ports come up.
VSS active, but only on one VSL port, the other one shows down.
I remove / reinsert the SFP+ on both 4500-X for the VSL port which is down, port comes up.
Situation 2:
With VSS configured, I reboot both 4500-X and none of the VSL ports comes up.
VSS goes into dual-active mode.
I remove / reinsert the SFP+ on both both 4500-X, VSL ports are coming up, but of course the the secondary 4500-X reloads to get out of the dual-active mode.
When coming up, I'm either in Situation 1 or again Situation 2
The above situations repeat randomly causing instability but not once the reload brought up both VSL ports
Already tried (to spare your efforts):
- changed the SFP+ with others (same Proline type) - no change
- changed the Fiber optic patch cables - no change
- changed the ports on the 4500-X - no change
- adding "service unsupported-transceiver" to configuration - no change
- replace the SFP+ 10G (Proline SFP-10G-SR-PRO) with SFP 1G (Proline GLC-SX-MMD-PRO) - works like a charm, no issue not matter how many times I reload
One error which I see when VSL ports with 10G are not coming up is something like :
%SFF8472-5-THRESHOLD_VIOLATION: Te1/1/16: Rx power low alarm; Operating value: -40.0 dBm, Threshold value: -13.9 dBm
From what I've read this is somehow a normal error when the SFP is inserted, but there is no link
To try
- get Cisco SFP+ - but this will take time
- check for BUG in the IOS
- try different IOS
I have to mention that I never had problem with Proline SFP, so this is very strange to me.
Does anybody else had any of the above problems? Did you solved it? How?
Do you have any other advice for me beside what I've already tried?
Thanks!
