Cisco OL-4015-08 Bedienungsanleitung Seite 52

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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)S3
The advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml.
CSCsm49112
Problem Description: When eBGP sessions that carry a full routing table (200,000+ routes) are
brought up, a prolonged period of 100-percent CPU utilization (5 to 7 minutes) is experienced.
During this time, the router is unresponsive in the CLI, and it stops responding to icmp/snmp polls.
The router is a Cisco 12406/PRP and is running Cisco IOS Release 12.0(32)S5
(c12kprp-k4p-mz.120-32.S5).
When bringing up a BGP session with a full routing table, the router seems to load the first several
thousand prefixes quickly and then stops dead for several minutes before loading the rest.
Workaround: After changing the outbound prefix list on the eBGP session to a deny all (ip prefix-list
test-nothing-out seq 1 deny 0.0.0.0/0 le 32), clearing the BGP session does not produce the problem
anymore.
CSCsm74848
Symptoms: A crash occurs.
Conditions: All the interfaces should be up and running. To recreate the issue, perform the following
steps:
1) Configure xconnect between PE1 and PE2.
2) Execute the show xconnect all command.
3) Then remove the T1 channel on which xconnect is configured.
Workaround: There is no workaround.
CSCsm75818
Symptoms: Multicast data loss may be observed while changing the PIM mode of MDT-data groups
in all core routers.
Conditions: The symptom is observed while changing the PIM mode of MDT-data groups from
“Sparse” to “SSM” or “SSM” to “Sparse” in all core routers in a Multicast Virtual Private Network
(MVPN).
Workaround: Use the clear ip mroute MDT-data group command to resolve the issue.
CSCsm84415
Symptoms: ATM aal0-aal0 local switching fails upon SSO switchover, with L2 rewrite information
missing for the corresponding VCs, resulting in traffic drops. Pseudo Wire will be down
Conditions: This symptom is observed after an SSO switchover in a scale testbed Local Switching
and AToM both will be affected.
Workaround: Shutting and unshutting the involved ports resolves the issue.
CSCsm86832
Symptoms: The line protocol of the serial interface keeps flapping.
Conditions: This symptom is observed after the Atlas BERT pattern is run on a fractional T1 (1 or
2 timeslots).
Workaround: Add/Remove the T1.
CSCso04657
Symptoms: SSL VPN service stops accepting any new connections.
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