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878

Cross-Platform Release Notes for Cisco IOS Release 12.0S

OL-1617-14 Rev. Q0

Caveats

Resolved Caveats—Cisco IOS Release 12.0(30)S5

Workaround: There is no workaround. When the symptom has occurred, re-apply the configuration

of the subinterfaces.

• CSCsc71286

Symptoms: The throughput is far below what you would expect on an MFR bundle that is configured

on a 8-port multichannel T1/E1 PRI port adapter (PA-MC-8TE1+).

Conditions: This symptom is observed on a Cisco 7200 series that runs Cisco IOS

Release 12.0(31)S2 when the MFR bundle has four T1 links, three of which are shut down. When

you generate 2.5 Mbps of traffic to congest the one active link, a throughput of about 37 kbps to

59 kbps is observed. You would expect a throughput of about 1.5 Mbps.

Workaround: There is no workaround. The symptom does not occur in Release 12.3.

IP Routing Protocols

• CSCec12299

Devices running Cisco IOS versions 12.0S, 12.2, 12.3 or 12.4 and configured for Multiprotocol

Label Switching (MPLS) Virtual Private Networks (VPNs) or VPN Routing and Forwarding Lite

(VRF Lite) and using Border Gateway Protocol (BGP) between Customer Edge (CE) and Provider

Edge (PE) devices may permit information to propagate between VPNs.

Workarounds are available to help mitigate this vulnerability.

This issue is triggered by a logic error when processing extended communities on the PE device.

This issue cannot be deterministically exploited by an attacker.

Cisco has released free software updates that address these vulnerabilities. Workarounds that

mitigate these vulnerabilities are available.

This advisory is posted at http://www.cisco.com/warp/public/707/cisco-sa-20080924-vpn.shtml.

• CSCei16615

Symptoms: A neighbor reloads when you enter the shutdown interface configuration command

followed by the no shutdown interface configuration command on an interface of an LSP router that

functions as a tunnel headend.

Conditions: This symptom is observed when the following events occur:

–

The tunnel headend sends a Path via RSVP to the neighbor but the Resv message is delayed.

–

There is only one Path to the neighbor for the session.

–

At the neighbor, the cleanup timer for the Path expires before the Resv message arrives, causing

the session to be terminated.

Workaround: There is no workaround.

• CSCsb09852

Symptoms: The number of networks in the BGP table and the number of attributes increases, and a

slower convergence may occur for members of a BGP update group.

Conditions: This symptom is observed on a Cisco router when the members of a BGP update group

go out of synchronization with each other in such a way that they have different table versions,

preventing the BGP Scanner from freeing networks that do not have a path.

To check if the members of the BGP update group are in synchronization with each other, enter the

show ip /jointfilesconvert/415844/bgp update-group summary command and look at the table version for each member. If

they have the same table version, they are in synchronization with each other; if they do not, they

are out of synchronization with each other.

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