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)B3.

For information on caveats in Cisco IOS Release 12.2(4)T1, see the Caveats for 
Cisco IOS Release 12.2 T, which lists severity 1 and 2 caveats and select severity 3 caveats and is 
located on Cisco.com and the Documentation CD-ROM.

Cisco IOS Release 12.2(4)B3 is in synchronization with Cisco IOS Release 12.2(4)T1.

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

http://www.cisco.com/cgi-bin/Support/Bugtool/launch_bugtool.pl

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

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, go to Cisco.com and press Login. Then go to Software 
Center: Cisco IOS Software: Cisco Bugtool Navigator II. Another option is to go to 
http://www.cisco.com/support/bugtools/.

All the caveats listed in 

 are open in Cisco IOS Release 12.2(4)B3 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.

CSCin03269

CEF table creation takes long time when 2000 GRE tunnels configured

CSCdv72965

Crash due to watchdog @ parse_radius_response

CSCdx24528

PPP Packet redirected to same interface in endless loop

CSCdr50376

Some sessions drop when the VCs are oversubscribed

CSCdr82324

L2TP:VPDN:Releasing idb for LAC/LNS tunnel

CSCdw65741

Incorrect tag rewrite for default route in VRF

CSCdx05811 

show atm pvc VPI#/VCI# does not show any output

CSCdx12542

NRP1 FE with ISL encapsulation is causing FCS errors on WS-X5225R

CSCin07477

MPLS:Control comm. between bpx-atm switch and nrp2 stopped

CSCdr52399

NRP2 reset during image download breaks NSP

CSCdr55905

config write code doesnt check for free space on disk