Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario Pagina 305

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751
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
CSCsm27071
A vulnerability in the handling of IP sockets can cause devices to be vulnerable to a denial of service
attack when any of several features of Cisco IOS software are enabled. A sequence of specially
crafted TCP/IP packets could cause any of the following results:
The configured feature may stop accepting new connections or sessions.
The memory of the device may be consumed.
The device may experience prolonged high CPU utilization.
The device may reload. Cisco has released free software updates that address this vulnerability.
Workarounds that mitigate this vulnerability are available in the “workarounds” section of the
advisory. The advisory is posted at
http://www.cisco.com/warp/public/707/cisco-sa-20090325-ip.shtml
CSCsm27455
Symptoms: SNMP query on "mempool mib" is returning only "cempMemBufferNotifyEnabled,"
and other MIB instances are not populated. Hence "cempMemBufferNotifyEnabled" is empty.
Conditions: Occurs on Cisco 7200 and Cisco 7300 platforms with "advipservicesk9" images. The
issue does not occur with "adventerprisek9" images.
Workaround: No workaround available.
CSCsm27565
Symptoms: The following CPUHOG is observed on executing the show ip route protocol
command:
*Jan 18 05:44:07.880 GMT: %SYS-3-CPUHOG: Task is running for (2000)msecs, more than
(2000)msecs (2/1),process = Exec.
Conditions: There must be a large number of routes in the routing table (e.g. 300K+ BGP routes),
most of which are owned by a protocol other than that which has been specified in the show
command.
Workaround: Do not use the protocol argument to filter the routes which are displayed. If necessary,
display the console output after the fact.
CSCsm27726
Symptoms: After overwriting DHCP pool and client pool, status of client is IDLE.
Conditions: Occurs on Cisco routers running a pre-release version of Cisco IOS Release 12.4(17b).
Workaround: There is no workaround.
CSCsm27814
Symptoms: The dot3 and dot3StatsTable tables are empty with ETHERLIKE-MIB.
Conditions: This issue is only observed with the c7200p-advipservicesk9-mz image. The issue does
not occur in the c7200p-adventerprisek9-mz image.
Workaround: There is no workaround.
CSCsm27958
Symptoms: After upgrading a Cisco 7600 to Cisco IOS Release 12.2(33)SRC, SSO does not come
up and router stays in RPR.
Conditions: Occurs only if the passive-interface default command is configured under OSPF.
Workaround: After upgrade, unconfigure and configure again the passive-interface default.
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