Cisco OL-4015-08 Bedienungsanleitung Seite 138

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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(32)S13
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.
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.
CSCso64050
Symptoms: Policy-map outputs are not seen in standby router. The policy is attached to the VC in
the standby, but no output is seen.
Conditions: The symptom is observed when an ATM PVC is created and a service policy is attached
to the PVC.
Workaround: There is no workaround.
CSCso92169
Symptoms: A traceback is seen on the E3 and E5 line cards.
Conditions: This symptom is observed under normal traffic conditions after a clear ip route *
command is issued.
Workaround: There is no workaround.
CSCsq31776
Cisco devices running affected versions of Cisco IOS Software are vulnerable to a denial of service
(DoS) attack if configured for IP tunnels and Cisco Express Forwarding. Cisco has released free
software updates that address this vulnerability. This advisory is posted at
http://www.cisco.com/warp/public/707/cisco-sa-20090923-tunnels.shtml.
CSCsr61125
Symptoms: A switchover takes more time on a Cisco 7500 router.
Conditions: This symptom is observed when RPR+ is configured on the Cisco 7500.
Workaround: There is no workaround.
CSCsu79988
Symptoms: Before this BGP aspath memory optimization, the memory consumption for aspath has
increased. With this memory optimization, the memory consumption for aspath has reduced.
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