Specifications

1400
Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Resolved Caveats—Cisco IOS Release 12.0(27)S
Further Problem Description: When the protected interface goes down, FRR switches from the
primary tunnel to the backup tunnel.
• CSCec37930
Symptoms: The standby Route Switch Processor (RSP) for a Cisco 7500 series may reload
unexpectedly.
Conditions: This symptom is observed on an RSP for a Cisco 7500 series that has a LAN Extender
(LEX) interface configured, and that has the Stateful Switchover (SSO) feature enabled.
Workaround: There is no workaround.
• CSCec38322
Symptoms: A Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN) provider edge
(PE) router that is running distributed Cisco Express Forwarding (dCEF) may have high memory
usage and memory allocation failures when dCEF is disabled and then reenabled.
Conditions: This symptom is observed on a PE router that has a large number of VPN routes (over
30,000) in a VPN routing/forwarding (VRF) table when CEF is disabled and then reenabled.
Further Problem Description: View the output of the show processes memory EXEC command to
verify that the CEF process memory usage increases.
Workaround: Reload the router.
• CSCec41955
Symptoms: The ATM over Multiprotocol Label Switching (MPLS) port mode connection may stay
in the down state after the cell-packing timer index is modified.
Conditions: This symptom is observed on a provider edge (PE) router with the packed cell relay
feature enabled.
Workaround: Enter the shutdown interface configuration command followed by the no shutdown
interface configuration command on the port to bring back the connection.
• CSCec42855
Symptoms: The following symptoms are observed on a dual Route Switch Processor 8 (RSP8)
router with a CT3 interface:
1. When the router runs Cisco IOS Release 12.0(23)S4 everything functions correctly. After the
router is upgraded to Cisco IOS Release 12.0(26)S, distributed Cisco Express Forwarding
(dCEF) does not run, even if the ip cef distributed global configuration command is configured
on the router.
2. Because dCEF is not running, it is not possible to ping other routers that are directly connected
to the dual RSP8.
3. The line protocol of the CT3 interface flaps.
Conditions: These symptoms are observed on a dual RSP8 with a CT3 interface that is configured
for Stateful Switchover (SSO) and Nonstop Forwarding (NSF).
Workaround: There is no workaround.
• CSCec44356
Symptoms: In Layer 2 Tunneling Protocol version 3 (L2TPv3) hairpinning (local switching)
configurations, matching the 802.1P values in an inbound class map does not function correctly.