Cisco Cisco IOS Software Release 12.4(4)T
1084
Caveats for Cisco IOS Release 12.4T
OL-8003-09 Rev. Z0
Resolved Caveats—Cisco IOS Release 12.4(9)T6
Resolved Caveats—Cisco IOS Release 12.4(9)T6
Cisco IOS Release 12.4(9)T6 is a rebuild release for Cisco IOS Release 12.4(9)T. The caveats in this
section are resolved in Cisco IOS Release 12.4(9)T6 but may be open in previous Cisco IOS releases.
section are resolved in Cisco IOS Release 12.4(9)T6 but may be open in previous Cisco IOS releases.
The following information is provided for each caveat:
•
Symptoms—A description of what is observed when the caveat occurs.
•
Conditions—The conditions under which the caveat has been known to occur.
•
Workaround—Solutions, if available, to counteract the caveat.
Basic System Services
•
CSCir01027
Symptoms: SNMP over IPv6 does not function.
Conditions: This symptom is observed on a Cisco router that integrates the fix for caveat
CSCsg02387. A list of the affected releases can be found at
CSCsg02387. A list of the affected releases can be found at
Cisco IOS
software releases that are not listed in the “First Fixed-in Version” field at this location are not
affected.
affected.
Workaround: Use SNMP over IPv4.
•
CSCsd90876
Symptoms: Memory corruption occurs when a “| include” is used with a CLI command. An already
in-use block gets freed and causes this corruption.
in-use block gets freed and causes this corruption.
Conditions: This symptom can happen with any usage when a “| include” is used with a CLI
command. It was found using a script for IPSec that resulted in “Crash on OIR of IPSec SLC
module.”
command. It was found using a script for IPSec that resulted in “Crash on OIR of IPSec SLC
module.”
Workaround: There is no work around. It is a programming defect.
Further Problem Description: It is a rare corner case memory corruption when a block gets freed
even when it is in use. It is caught by a script under stress testing conditions which results in such a
rare condition.
even when it is in use. It is caught by a script under stress testing conditions which results in such a
rare condition.
While using CLI and “| include” it is rare to get such a corruption. If it happens, it will lead to box
reload.
reload.
IP Routing Protocols
•
CSCsg55591
Symptoms: When there are link flaps in the network, various PE routers receive the following error
message:
message:
%BGP-3-INVALID_MPLS: Invalid MPLS label (1) received in update for prefix
155:14344:10.150.3.22/32 from 10.2.2.1
Or, a local label is not programmed into the forwarding table for a sourced BGP VPNv4 network.
Conditions: These symptoms are observed when an iBGP path for a VPNv4 BGP network is present,
and then a sourced path for the same route distinguisher (RD) and prefix is brought up.
and then a sourced path for the same route distinguisher (RD) and prefix is brought up.