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Cross-Platform Release Notes for Cisco IOS Release 12.0S
OL-1617-14 Rev. Q0
Caveats
Resolved Caveats—Cisco IOS Release 12.0(33)S10
CSCtc90579
Symptoms: Router crashes due to memory corruption during MPLS TE auto backup tunnel deletion.
Conditions: Caused by topology changes triggering backup tunnel deletion and RSVP hello
mechanism.
Workaround: Globally, disable RSVP hello and enable BFD hello:
Router(config)# no ip rsvp signalling hello
Router(config)# ip rsvp signalling hello bfd
Per MPLS TE enabled interface:
Router(config-if)# no ip rsvp signalling hello
Router(config-if)# ip rsvp signalling hello bfd
CSCte80997
Symptoms: When a linecard is reloaded, the LFIB entries do not match the RP CEF entries.
Reloading the linecard and clearing CEF and CEF adjacencies on the linecard do not clear the
problem.
Conditions: eiBGP enabled so the routes are learned through an iBGP path and an eBGP path,
multipath, CEF enabled.
Workaround: Add static default routes, one via the directly connected CE router with outgoing
information as eBGP path and the other for the remote CE router with outgoing information as iBGP
path.
CSCtl82483
Symptoms: When there is a parent policy map on the main interface with “match vlan” and
subinterfaces that have IPv6 traffic, after a shut and no shut of the main interface, the QoS for IPv6
traffic stops working.
Conditions: Using “match vlan” with the parent policy.
Workaround: Remove and reapply the policy map on the main interface. Also, if you enable the
“debug eelc qos” command on the linecard, the problem goes away.
CSCtn58005
Symptoms: The prefix-list does not filter local routes configured in the L1-L2 domain.
Conditions: The symptom is observed on a router running IPv6 ISIS L1-L2 domain and when L1
routes are redistributed into L2 routes.
Workaround: There is no workaround.
CSCtq97113
Symptoms: High CPU utilization is observed on the linecard with the “CEF LC IPC Backg” process.
It is followed by memory depletion in the RP, which results in the FIB being disabled.
Conditions: This symptom is observed when multipath load balancing is configured in the core
network and these paths keep flapping.
Workaround: Stop the path flaps in the core network.
CSCtr88610
Symptoms: Five Cisco 12000 series Internet routers have similar problems. Few free buffers are seen
in the Tofab Q, and linecard fish_status stuck or ToFab Q stuck is seen. The E5 card crashes due to
a ToFab FIA FIFO overflow.
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