Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario Pagina 391

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837
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
Workaround: Remove the ip multicast multipath command from the two routers to disable ECMP
load-splitting.
CSCsr82785
Symptoms: If APS is configured on a large number of channelized sub-interfaces associated with a
single controller such that a single failure can cause all of these interfaces to failover at the same
time, and RIP is configured to run over these interfaces, high sustained CPU usage will be seen
following the failover and reconvergence time will be lengthy.
Conditions: Large number of APS protected interfaces fail over at the same time. RIP is the protocol
running on those interfaces. IP addresses on all interfaces are covered by the same network
statement.
Workaround: There is no workaround.
Further Problem Description: The length of the high CPU and reconvergence period will increase as
the number of impacted interfaces increases.
The length of the high CPU and reconvergence period will also increase as the number of network
statements which cover the IP addresses on the affected interfaces decreases i.e. it will be worst
when a single classful network (e.g. 10.0.0.0) covers all interfaces, somewhat better when multiple
classful networks are impacted.
CSCsr86515
Symptoms: Router crashed due to watchdog timeout in the virtual exec process:-
%SYS-3-CPUHOG: Task is running for (128000)msecs, more than (2000)msecs
(129/17),process = Virtual Exec. -Traceback= 40B5D8A8 40B5D984 40B5DA4C 40B5DB78
40B5DC6C 40C0E1BC 4125D3A8 4209FAEC 420AA5A0 4054C05C 420570D8 40575510 41257298
41257284 %SYS-2-WATCHDOG: Process aborted on watchdog timeout, process = Virtual Exec.
-Traceback= 40B5D8C8 40B5D984 40B5DA4C 40B5DB78 40B5DC6C 40C0E1BC 4125D3A8 4209FAEC
420AA5A0 4054C05C 420570D8 40575510 41257298 41257284
Conditions: This was observed on a Cisco 7600 with Supervisor 720 running Cisco IOS Release
12.2(33)SRB3 after a ATM sub-interface was removed.
Workaround: There is no workaround.
CSCsr92184
Symptoms: Traffic drops after VLAN change on interface configured with single VLAN BCP.
Conditions: Unconfiguring and configuring scaled single VLAN BCP configuration with heavy
traffic running can cause this to happen.
Workaround: Perform a shut/no shut on all interfaces.
CSCsr93316
Symptoms: A Cisco 7600 router is configured with li-slot list <slot>. When the slot is OIR removed
and re-inserted, Lawful Intercept (LI) becomes RP-based instead of being done by the line card.
Conditions: Occurs after an online insertion and removal (OIR) operation is performed on a line card
configured for LI.
Workaround: Re-apply the li-slot list config after the line card is inserted.
CSCsr98731
Symptoms: If running OSPF, stale routes may be installed in the RIB. Also wrong paths (inter-area
vs intra-area) are preferred.
Conditions: Occurs on a router running Cisco IOS Release 12.2(33)SRC1.
Workaround: There is no workaround.
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