Cisco Cisco IOS Software Release 12.2(4)B

Caveats describe unexpected behavior in Cisco IOS software releases. Severity 1 caveats are the most 
serious caveats; severity 2 caveats are less serious. Severity 3 caveats are moderate caveats, and only 
select severity 3 caveats are included in the caveats document.

All caveats in Cisco IOS Release 12.2(4)T1 are also in Cisco IOS Release 12.2(4)B7.

For information on caveats in Cisco IOS Release 12.2(4)T1, see 

which lists severity 1 and 2 caveats and select severity 3 caveats.

Caveat numbers and brief descriptions are listed in the tables in this section. For details about a particular 
caveat, go to the Bug Navigator located at 

. To access this 

location, you must have an account on Cisco.com. For information about how to obtain an account, go 
to the 

All of the caveats listed in 

 are open in Cisco IOS Release 12.2(4)B7 for the Cisco 6400 NRP-1, 

NRP-2, NRP-2SV, and NSP. This table lists only severity 1 and 2 caveats and select severity 3 caveats.

All

CSCdx91120

%SYS-2_WATCHDOG: 
Process = PPPOE 
background daemon.

If a permanent virtual circuit 
(PVC) that is configured for 
PPPoX autosensing is removed, 
the router is sometimes reloaded 
due to watchdog timeout.

Determine the virtual access 
(VA) interface for each of 
the PPPoE sessions and 
enter clear interface 
virtual-interfacexxx. When 
all of the sessions on the 
virtual circuit are gone, the 
virtual circuit can be 
removed.

CSCdz31478

AAA Acct Proc traceback 
on shut interface

Under atm0/0/0, there are 4 
multipoint subinterfaces with 400 
PPPoA sessions each, but no 
traffic flowing. AAA accounting 
network default start-stop group 
radius is configured.

None.

NSP

CSCdy07600

NSP Reload when 
formatting slot 0

When trying to format an ATA 
card, the format slot 0 command 
can cause the NSP to reload and 
failover to the redundant NSP 
prior to the format completing. 

Do not use the format slot 
command on the NSP. Use 
format disk instead.