Cisco Cisco IOS Software Release 12.4(2)XB6 릴리즈 노트

Caveats describe unexpected behavior or defects in the Cisco IOS software releases. Severity 1 caveats 
are the most serious caveats, severity 2 caveats are less serious, and severity 3 caveats are the 
least serious of these three severity levels.

Caveats in Cisco IOS Release 12.4(2)T are also in Cisco IOS Release 12.4(2)XA. For information on 
caveats in Cisco IOS Release 12.4(2)T, refer to the 

document. 

This document lists severity 1 and 2 caveats; the documents are located on 

Documentation CD.

If you have an account with 

, you can also use the Bug Toolkit to find select caveats of any 

severity. To reach the Bug Toolkit, log in to 

 and click Service & Support: Technical 

Assistance Center: Tool Index: Bug Toolkit. Another option is to go to 

This section contains the following caveat information:

CSCsc36118: The default route is removed if the one of multiple PPPoE session down

Symptoms: The default route is removed if the one of multiple PPPoE session down.

Conditions: This problem occurs when you configure multiple PPPoE which connect to the same 
BRAS or same LNS if using L2TP and ppp ipcp route default is configured using Cisco IOS 
Software Release 12.4(2)T1.

Workaround: There is no workaround. However, you can still turn routing on. For example, 
configure the multiple default routes pointing to the dialer interface(s) as the next hop.

There are no known open caveats in this release.

CSCej12757: Line speed change on IOS side should be allowed

Symptoms: There are two issues: