Specifications

1401
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S
Conditions: This symptom is observed on a Cisco 10720 Internet router that is running Cisco IOS
Release 12.0(25) S or later releases, and only occurs when the L2TPv3 configuration uses
hairpinning.
Workaround: There is no workaround.
• CSCec45704
Symptoms: ATM binding is not used by the Tag Forwarding Information Base (TFIB) Cisco Express
Forwarding (CEF) table for some prefixes of remote provider edge (PE) routers on a PE router.
Conditions: This symptom is observed on a Cisco Route Processor Module (RPM-PR) in a
cell-based Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN).
Workaround: Enter the clear ip route network EXEC command.
• CSCec48025
Symptoms: A port may go down when a channel is disabled and then reenabled while traffic passes
through the port. The port failure can affect any channel and may cause some packets to be dropped
for the affected channel. Packets that are smaller than an arbitrary size are dropped, and packets that
are larger than this arbitrary size are unaffected.
Conditions: This symptom is observed on the CH-E1T1 line card of a Cisco 10000 series. The
shutdown command in both the controller and interface modes as well as explicit channel
deconfiguration while traffic is passed through the channels being disabled may cause this symptom.
Workaround: There is no workaround.
• CSCec48925
Symptoms: When running in non-redundant PRE mode, after a crash, the line cards do not get reset.
In rare cases, after Cisco IOS software reloads, there may be a mismatch between the Cisco IOS
software and the line card so that the line card does not pass traffic.
Conditions: These symptoms have been observed after Cisco IOS is restarted after a crash when
running in non-redundant PRE mode. Anything that goes through the formal reload path (with a
single PRE1 in the system) will properly reset the line cards on the way down. This fix resets the
cards on the way up as well in case they weren’t reset on the way down.
Workaround: There is no workaround. However, after a Cisco IOS software crash, if a line card is
not passing traffic, resetting the line card might fix the issue. A reload of the chassis will definitely
fix the issue.
• CSCec50541
Symptoms: A router may terminate a Secure Shell (SSH) session after the router has fallen back to
local authentication and authorization. The output of a debug command may show that the router
ended the session normally, as if the SSH had typed “exit” in the SSH client application.
Conditions: This symptom is observed on a Cisco router that runs Cisco IOS Release 12.2 or 12.3
when authentication and authorization is configured to be performed by a TACACS+ server with
local fallback to the router and when the TACACS+ server goes offline. The SSH user must have
been authenticated successfully at least once by the TACACS+ server.
Workaround: Use a Telnet connection to access the router.
• CSCec56047
Symptoms: When you configure and deconfigure Multiprotocol Label Switching (MPLS) traffic
engineering (TE), stale router ID information may be used in the node structure, causing the path
lookup process in the TE label switched path (LSP) topology database to fail.