Cisco Cisco IOS Software Releases 12.2 MC

If you have an account with Cisco.com, you can use Bug Navigator II to find caveats of any severity for 
any release. To reach Bug Navigator II, Login to Cisco.com and click Software Center: Cisco IOS 
Software: Cisco Bugtool Navigator II. Another option is to go directly to 
http://www.cisco.com/support/bugtools. 

The following caveat is open in Release 12.2(8)MC2.

CSCdw40302

If two MGX-RPM-1FE-CP back cards are installed at boot up or a second MGX-RPM-1FE-CP back 
card is installed in a running system, cryptic error messages might display and the system might 
become unstable. If the system be comes unstable, the instability could lead to a system crash.

Workaround: Only one MGX-RPM-1FE-CP back card is supported per RPM-PR. Do not install a 
second MGX-RPM-1FE-CP back card before removing the first back card. If two back cards are 
installed at any one time, we recommend that you reload the RPM-PR with only one 
MGX-RPM-1FE-CP back card installed.

The following caveat is resolved in Release 12.2(8)MC2. 

CSCdy09277

Packet loss from the MGX 8850 RPM-PR to the Cisco MWR 1900 router increases at the Cisco 
MWR 1900 (as displayed using the show ip rtp header-compression command) when the 
MWR 1900 is reloaded and the MGX-RPM-PR switches are not.

To collect data for reporting back card and router issues, issue the following command:

show tech-support—Displays general information about the router when it reports a problem.

show logging—Displays information in the syslog history table.