Cisco 7600-ES20-GE3CXL-RF - Ethernet Services 20G Line Card Switch Uživatelský manuál stáhnout pdf (Strana 181)

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

OL-10394-05 Rev. R0

vpn id xxx

forward permit l2protocol all

Workaround: Reload the router. If this does not help, reduce the number of possible core-facing

MPLS interfaces that the VPLS pseudowire could possibly take.

• CSCsy01763

Symptoms: Packets leak from source to destination when PACL is configured and switchover is not

complete.

Conditions: During switchover, and until TCAM is programmed, packets are L3 switched even if

the PACL will drop them further. Also, when the PACL is changed, such as addition or removal of

ACEs, some packets which are supposed to be dropped will leak to the destination.

Workaround: There is no workaround.

• CSCsy04594

Symptoms: When a Cisco 7600 is connected to a different MST region and has a port with root guard

configured on the MST boundary port, all VLAN interfaces flap each time a superior BPDU is

received on this port. This behavior was observed with Cisco IOS Release 12.2(33)SRB4 and Cisco

IOS Release 12.2(18)SXF14.

Conditions: It was observed in the following context:

1) The switch is connected to a different MST region 2) It has a port configured as root guard on

MST region boundary

Workaround: Shut down blocked port or remove root guard configuration from the port and the

VLAN interfaces stop flapping.

• CSCsy07555

Cisco IOS devices that are configured for Internet Key Exchange (IKE) protocol and certificate

based authentication are vulnerable to a resource exhaustion attack. Successful exploitation of this

vulnerability may result in the allocation of all available Phase 1 security associations (SA) and

prevent the establishment of new IPsec sessions.

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-ipsec.shtml

• CSCsy07830

Symptoms: All traffic through ES line cards stops after a RSP failover. The line cards fail

diagnostics and never recover.

Conditions: Occurs periodically when a redundancy force-switchover is executed on a router

containing multiple RSPs and ES line cards.

Workaround: Reload the router.

• CSCsy08264

Symptoms: MQC policy applied on ES+ interface may not work as expected. Occurs if too many

unique bandwidth rates are configured and applied on same line card and on the interfaces belonging

to same Network Processor.

Conditions: If more than 32 unique bandwidth rates are (defined in policy maps applied on same

NP) configured, the policy map is accepted without error but may not work as intended.

Workaround: If multiple unique bandwidth rates are required, space the policy maps across

interfaces based on different network processors.

• CSCsy10610

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