Cisco Cisco IOS Software Release 12.2(10) 發佈版本通知

 lists the caveats that have been resolved in Cisco IOS Release 12.2(12)DA1.

CSCdx84898

Upgrades from Cisco IOS 12.1(7) DA to newer IOS images cause G.SHDSL 
ports to occasionally drop and retrain. The error is listed as LOSQ (Loss of Signal 
Quality) due to CRC errors detected or LOS when Loss of Frame Sync. is 
detected.

Workaround: Newer versions of G.SHDSL firmware have been adjusted to meet 
the ratified standards. This may require some fixed-rate loops to not hold train at 
the current configured rate used with Cisco IOS 12.1.(7)DA. Reducing the 
configured rate in some cases will resolve the issue. Random drops may still 
occur on some ports. 

CSCea56851

3db downstream margin configured ports on 8xDMT do not achieve max 
configured downstream rate on loops that should achieve max configured 
downstream rate.

Workaround: Use of DSL’s recommended 6db downstream margin will achieve 
max configured rate on loops expected to achieve max rate.

CSCea38684 

FTP fails with the traceback: SYS-2-LINEPROCDEAD: Killing process

CSCea50123

Ftp sessions on NI2 will abort the file transfers occasionally without any error 
messages or notifications to the user.