The Frequency Mismatch alarm occurs when one of the two TSC cards has a timing module failure that causes an inconsistency between the TSC card timing frequencies. This alarm can be caused by the active or standby TSC card.
The ONS 15600 SDH checks timing frequency synchronization in 83-minute (1 hour and 23 minutes) cycles. The FREQ-MISMATCH alarm occurs if two consecutive timing check cycles show frequency mismatches. The alarm is cleared if one cycle shows a timing frequency match between the TSC cards.
This is not a typical situation to have SONET & SDH software loads on the same system.
Typically, when you install a second TSC card in the shelf, it will download the software load running on the active TSC (primary)card. You might just try unseating the standby TSC card and reseating it to see if it will upgrade to the current operating load.
Normally you can upgrade a node remotely through software download. However, I am uncertain how the node will respond due to the mixed SONET/SDH software loads.
By mistake, they put a Sonet TSC Card in slot 10 as standby. Anyway, we have already changed the TSC card with sonet firmware to one with SDH firmware and the alarm was cleared.
I have another question with regards to E1-42 cards. We have changed cards 3x in two months and we do not know as to why these cards keep failing. We get this message "equipment failure".
Our current setup is on a 15454 shelf, slot 1 and 4 are the working cards and slot 3 is the protection card for both working cards. I have replaced already slot 3 and 4. Then in another time slot 4 again.So how do we go about troublshooting this problem inorder to pinpoint the culprit.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
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IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
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In this session you can learn more about Layer 3 multicast and the best
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