Troubleshooting guide

9
Release Notes for Cisco ONS 15454 Release 7.0.2
OL-11368-01
Caveats
“Are you sure” Prompts
Whenever a proposed change occurs, the “Are you sure” dialog box appears to warn the user that the
action can change existing provisioning states or can cause traffic disruptions.
Common Control Cards
CSCdw27380
Performing cross connect card switches repeatedly might cause a signal degrade condition on the lines
or paths that can trigger switching on these lines or paths. If you must perform repeated cross connect
card switches, lock out the corresponding span (UPSR, BLSR, or 1+1) first. This issue will not be
resolved.
Active Cross Connect (XC10G/XCVT) or TCC2/TCC2P Card Removal
You must perform a lockout in BLSR, UPSR, and 1+1 before physically removing an active cross
connect (XC10G/XCVT) or TCC2/TCC2P card. The following rules apply.
Active cross connect (XC10G/XCVT) cards should not generally be physically removed. If the active
cross connect or TCC2/TCC2P card must be removed, you can first perform an XCVT/XC10G side
switch or TCC2/TCC2P reset and then remove the card once it is in standby, or you can perform a lockout
on all circuits that originate from the node whose active cross connect or active TCC2/TCC2P will be
removed (performing a lockout on all spans will also accomplish the same goal). No lockout is necessary
for switches initiated through CTC or through TL1.
Caution If you mistakenly remove an active TCC2/TCC2P card and you subsequently lose traffic on some
interface cards, you may need to physically reset these cards if they fail to regain traffic.
Ethernet Polarity Detection
The TCC2/TCC2P does not support Ethernet polarity detection. The TCC+ and TCCI both support this
feature. If your Ethernet connection has the incorrect polarity (this can only occur with cables that have
the receive wire pairs flipped), the TCC+/I will work, but the TCC2/TCC2P will not. In this event, a
standing condition, “LAN Connection Polarity Reverse Detected” (COND-LAN-POL-REV), will be
raised (a notification will appear on the LCD, and there will be an alarm raised). This issue will most
likely be seen during an upgrade or initial node deployment. To correct the situation, ensure that your
Ethernet cable has the correct mapping of the wire wrap pins. For Ethernet pin mappings, consult the
user documentation.
Optical IO Cards
CSCei26718
On the 15454_MRC-12, when a one way VT/VC circuit on UPSR over 1+1 protection is