ONS 15454 problem turning up OC12

Unanswered Question
Oct 11th, 2007


I am trying to turn up an OC12 (non-concatenated) that is muxed from a OC48. The OC48 terminates on an ONS 15454 on both sides. From there we run SM fiber to Cisco 12000 series onto an SM OC12/SMT4 Line card on both sides too.

My settings for the ONS are as follows:


Size 12C

Dir = 2way

We see on one Cisco UP/DOWN, and on other Cisco Down/Down

Does any on this forum have any tips at all?

I have this problem too.
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tphelps Thu, 10/11/2007 - 13:57

You say you want a "non-concatenated" OC-12 but have created a 12c cross connect. Try creating 12 STS-1 cross connects from the OC-48 to the OC-12.

rick.king Thu, 10/18/2007 - 04:08

I know this sounds silly, but have you checked power levels? It almost sounds like you are overdriving the interfaces....

tphelps Thu, 10/18/2007 - 05:03

Which OC12 LC do you have on the 12000?





rdierlam Thu, 10/18/2007 - 05:06

The Line card is the same on both sides:

4 Port Packet Over SONET OC-12c/STM-4 Single Mode


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