Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Uživatelský manuál stáhnout pdf (Strana 194)

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Caveats for Cisco IOS Release 12.2(33)SRD through 12.2(33)SRD8

OL-10394-05 Rev. R0

• CSCsr26025

Symptoms: When “0.0.0.0/8 static route to null 0” is configured, the default gateway failover does

not work. RIB is not updated.

Conditions: Occurs under the following scenario:

- Border Gateway Protocol (BGP) with two neighbors sending a default gateway.

- Static route “0.0.0.0/8 to null 0” is configured.

- Failover takes place and RIB is not updated.

Workaround: There is no workaround.

• 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.

• 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.

• 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 ip route-mapname command is entered.

Workaround: Upgrade to Cisco IOS Release 12.2(33)SRC3 or later.

• CSCsr55713

Symptoms: A crash occurs.

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Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Uživatelský manuál Strana 194