Specifications

1100
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(28)S4
• CSCsb09190
Symptoms: A router misses an entry in its label forwarding table, which is shown in the output of
the show tag-switching forwarding-table EXEC command for the missing entry and in the output
of the show ip cef detail EXEC command for the prefix.
Conditions: This symptom is observed on a Cisco router that is configured for Multiprotocol Label
Switching (MPLS) and that learns its routes through iBGP from redundant route reflectors (RRs)
when BGP labeling is not enabled.
Workaround: There is no workaround. However, when you enter the clear ip route EXEC command
for the affected prefix, the prefix is reinstalled in the label forwarding table.
• CSCsb18880
Symptoms: A 4-port channelized STM-1/OC-3 line card resets and generates an
“IRONBUS-FAULT” error message.
Conditions: This symptom is observed on a Cisco 10000 series when you enter the tug-2
tug-2-number e1 e1-number loopback command on the line card.
Workaround: There is no workaround.
• CSCsb29326
Symptoms: An snmpwalk fails for cmplsFrrFacObjects in the FRR-MIB.
Conditions: The symptom is observed on a Cisco 12000 series that runs Cisco IOS
Release 12.0(26)S6, Release 12.0(28)S3, or Release 12.0(31)S.
Workaround: There is no workaround.
• CSCsb33258
Symptoms: A Cisco 12000 series RP crashes during BGP convergence when MVPNs are
configured.
Conditions: This symptom is observed on a Cisco 12000 series after a duplicate BGP MDT extended
community message is received that specifies a different Route Descriptor (RD) for an MDT that
already exists for the specified MDT source and group address.
Workaround: There is no workaround.
• CSCsb41367
Symptoms: When you enter the redundancy force-switchover command, an Engine 4 line card may
crash.
Conditions: This symptom is observed on a Cisco 12000 series that runs the c12kprp-p-mz
Cisco IOS software image and that has two RPs that function in SSO mode.
Workaround: There is no workaround.
Wide-Area Networking
• CSCef54653
Symptoms: Some members of a multilink bundle remain inactive, while others are active.
Conditions: This symptom is observed when the interfaces are configured with the ppp chap
hostname or ppp multilink endpoint command. Very high speed interfaces may come up and join
the multilink bundle faster than the configuration can be processed, which causes them to use the
host name of the router (instead of the configured user name or endpoint value) as the Endpoint
Discriminator during Link Control Protocol (LCP) negotiations. This situation causes a mismatch
between these links and those that come up after the configuration command is processed.