Troubleshooting guide

Release Notes for Cisco ONS 15454 Release 7.0.2

OL-11368-01

Caveats

Step 1 Connect a jitter testbox TX to Trunk RX port.

Step 2 Connect a jitter testbox RX to Trunk TX port.

The jitter testbox TX clock recovers from RX with an additional 5 ppm offset added. This issue will not

be resolved.

CSCef50726

Receive client fiber removal can cause a switch from the protect to the active in a TXPP_MR_2.5G. To

see this issue, perform the following steps.

Step 1 Set up two nodes with TXPP_MR_2.5G (call the nodes TXP-1 and TXP-2).

Step 2 Ensure that TXP-1 DWDM-A trunk is connected to TXP-2 DWDM-A trunk with a 100 Km span.

Step 3 Ensure that TXP-1 DWDM-B trunk is connected to TXP-2 DWDM-B trunk with a 0 Km span.

Step 4 Ensure that TXP-1 client has an external fiber loopback.

Step 5 Connect the TXP-2 client to a traffic generator.

Step 6 Provision TXP-1 and TXP-2 with FICON 1G payload.

Step 7 Ensure that traffic is running smoothly on the protected span.

Step 8 Remove the receive client fiber at the near end.

This causes the far end trunk to switch from protect to working span. Similarly, removal of the receive

Client fiber at far end causes the near end trunk to switch from the protect to the working span. (Note

that the traffic is already lost due to the receive client fiber pull.) To work around this issue, manually

switch via CTC from the working to the protect span. This issue will not be resolved.

CSCef13304

Incorrect ALS initiation causes a traffic outage on an FC payload. This issue can be seen by performing

the following steps.

Step 1 Set up two nodes with TXPP_MR_2.5G (call these nodes TXP-1 and TXP-2).

Step 2 Connect the TXP-1 DWDM-A trunk to the TXP-2 DWDM-A trunk.

Step 3 Connect the TXP-1 DWDM-B trunk to the TXP-2 DWDM-B trunk.

Step 4 Provision the TXP-1 client with an external fiber loopback.

Step 5 Connect the TXP-2 client to a traffic generator.

Step 6 Ensure that TXP-1 and TXP-2 have 1G FC payload provisioned.

Step 7 Enable ALS on TXP-1 trunk port and set it to “Manual Restart.”

Step 8 When traffic is running, remove the receive and transmit fibers on TXP1 port 1 (client). Traffic goes

down and shutdown on TXP-1 port 2 (trunk) displays “No.”