Troubleshooting guide

24
Release Notes for Cisco ONS 15454 Release 7.0.2
OL-11368-01
Caveats
CSCuk42752
If you go to the Overhead Circuits Tab in network view and select any User Data, F1 or User Data
D4-D12 circuit type, no nXP cards are available for selection in the Endpoints. However, user Data type
circuits can still be made end-to-end (where “end-to-end” refers to external cards, such as AIC to AIC)
if the nXP cards are put in Transparent mode. This issue will not be resolved.
CSCeb49422
With TXPP cards, a traffic loss up to six seconds can occur during a DWDM protection switch. This
behavior may be exhibited during protection switches by certain third-party fiber channel switches due
to loss of buffer credits resulting in a reconvergence of the fiber channel link. This issue will not be
resolved.
CSCeb53044
The 2G Fiber Channel (FC) payload data type in the TXP_MR_2.5G and TXPP_MR_2.5G cards do not
support any 8B/10B Payload PM monitoring. This is as designed.
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The TXP_MR_2.5G and TXPP_MR_2.5G cards do not support TX Optical power performance
monitoring on the trunk port. This is as designed.
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Once engaged, ALR will not restart on the trunk lines of a TXP or TXPP card. This occurs whenever
ALR engages on the trunk lines of a TXP or TXPP card and the recover pulse width is provisioned to
less than 40 seconds. This is a function of the trunk laser turn-on time, and the limiting recovery pulse
width will vary by card. To avoid this issue, provision the pulse width to 40 seconds or more. This issue
will not be resolved.
CSCuk42588
With ALS mode configured as “Auto Restart” or “Manual Restart,” it is possible the ALS Pulse Duration
Recovery time can be set to values out of ITU-T recommendation G.664. You can use values out of the
range defined in ITU-T recommendation G.664 only in order to interoperate with equipment that lasers
cannot turn on or off within the required pulse time. To stay within the specification, you can set this
value to 2 seconds and up to 2.25 seconds.
CSCea81219
On the TXPP, the default value for Tx Power High for TCAs & Alarms is too high for the trunk ports.
Since Tx Power TCA and Alarm are not supported for trunk ports, this caveat is for informational
purposes only.