Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Manual de usuario Pagina 132

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578
Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8
OL-10394-05 Rev. R0
CSCsr29468
Cisco IOS Software contains a vulnerability in multiple features that could allow an attacker to
cause a denial of service (DoS) condition on the affected device. A sequence of specially crafted
TCP packets can cause the vulnerable device to reload.
Cisco has released free software updates that address this vulnerability.
Several mitigation strategies are outlined in the workarounds section of this advisory.
This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20090325-tcp.shtml
CSCsr41079
Symptoms: Error message seen after stateful switchover (SSO):
%CHKPT-4-NOMESSAGE: Message is NULL, (Cannot get data ptr)
Conditions: Occurs when Intermediate System-to-Intermediate System (IS-IS) NSF is configured.
Workaround: There is no workaround.
CSCsr43461
Symptoms: Some configurations are missing after a reload.
Conditions: This symptom is seen when a router reloads that results in missing configurations of
“vrf selection source” under show run.
Workaround: There is no workaround.
CSCsr45502
Symptoms: A router intermittently runs into crashes in a large scale network with active PPPoEoA
sessions.
Conditions: This symptom occurs when many active PPPoEoA sessions exist.
Workaround: There is no workaround.
CSCsr49316
Symptoms: A crash happens when the show ipv6 rpf x:x:x::x command is given.
Conditions: This symptom is observed only when there are more than 16 adjacencies for a single
static route. The crash happens when the show ipv6 rpf command is given for this particular static
route.
Workaround: There is no workaround. This problem occurs as long as there are more than 16
adjacencies for single static route even if some of them are not active.
CSCsr51801
Symptoms: Some of the route-maps configured for BGP sessions (eBGP) are not permitting the
prefixes upon a router reload.
Conditions: The symptom is observed when a large number of route-maps for a BGP session are
configured and the router is reloaded.
Workaround: Issue the command clear ip /jointfilesconvert/422273/bgp * soft.
CSCsr53264
Symptoms: A software-forced crash occurs on the RP of a Cisco 7600 running Cisco IOS Release
12.2(33)SRB2.
Conditions: Occurs when the clear route-map counters <name> command is entered.
Workaround: Upgrade to Cisco IOS Release 12.2(33)SRC3 or later.
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