Cisco Cisco ONS 15454 SDH Multiservice Provisioning Platform (MSPP)

The switchover time is greater than 50ms when LOS-P or SIGLOSS conditions occurs on the trunk port 
of 10GE_XP cards with Y-cable setup. This issue will be resolved in a future release.

This section documents Electrical I/O Cards caveats in Release 8.5.1.

Long traffic hits can occur on E1-42 when using cross-connect FIT cards. This can occur when, on the 
FIT card, you toggle the 155 mhz clock going to the E1-42 cards to the off position. This issue cannot 
be resolved.

Rarely, a long traffic hit (117 ms) can occur on E1-42 after an XC side switch. In multinode BLSR 
setups, switching the cross-connect cards repeatedly might cause traffic hits greater that 60 ms. To avoid 
this issue, side switch the XC only when needed (and not repeatedly). This issue will not be resolved.

Rarely, DS3I VC3 traffic takes a hit greater than 60 ms during a cross-connect card soft reset. This issue 
will not be resolved.

This section documents Hardware caveats in Release 8.5.1.

When retrieving Gigabit Interface Converter (GBIC) inventory for the FC_MR-4, nothing is returned for 
the CLEI code. In a future release, enhanced inventory information will be available for ONS GBICs. 
This will include the CLEI code. This issue will be resolved in a future release.

When you auto-route a VT circuit on an ONS 15454 node, a path is computed based on the availability 
of STSs on the nodes involved. This selection process, when combined with a lack of VT matrix (or 
STS-VT connections) on an auto-route selected node, can result in the VT circuit creation failing with 
the message “unable to create connection object at node.” To correct this situation, manually route VT 
circuits in cases when auto-routing fails. The error message will indicate which node is at issue.