Specifications

Release Notes for Cisco IOS Release 12.0 S

78-7130-11 Rev. B0

Caveats

peers are route-refresh capable, soft-reconfiguration inbound is not configured, the filter that you

apply does not result in a deny for a prefix, if you do a hard reset, or the soft reconfiguration is done

through route-refresh.

Workaround: If you have soft cleared the session after applying the filter, enter the

clear ip bgp {*} [soft out] EXEC command.

Alternate workaround: Upgrade to Cisco IOS Release 12.0(8.5)S.

Miscellaneous

• CSCdk77704

If you enable fancy queueing on an interface where it is the default, the queueing behavior might

not function properly. There is no workaround.

• CSCdp17433

The Forwarding Information Base (FIB) scanner might not free a locked FIB entry so the FIB path

chunks will never be freed, resulting in a memory leak. There is no workaround.

• CSCdp35794

When Access Control Lists (ACLs) are used, Gigabit and Fast Ethernet line cards might experience

data corruption. This situation is likely to happen for non-Address Resolution Protocol (ARP)

standard Ethernet style (RFC 826) encapsulation packets.

When extended or compiled ACLs are used, a Gigabit Switch Router (GSR) with Gigabit Ethernet

(GE) or Fast Ethernet (FE) line cards might experience line-card failures or corruption of internal

queueing structures. This failure might result in incorrect traffic forwarding behavior for packets

received on affected cards.

This failure will not occur if ACLs are not used. Even when ACLs are configured, the occurrence

of this failure is still rare. Conditions that will increase the frequency of the error occurring are the

use of compiled access lists, large amounts of traffic with nonstandard Ethernet encapsulations, or

the presence of large amounts of ARP traffic.

Workaround: Reset the card by entering the microcode reload [slot-number] global configuration

command.

• CSCdp38982

When a first label switch router (LSR) is sending Multiprotocol Label Switching (MPLS)

encapsulated IP frames to a second LSR that is removing the last label and sending the resultant IP

frame onto an Inter-Switch Link (ISL), then IP packets of less than 44 bytes will be received as

cyclic redundancy check (CRC) errors. There is no workaround.

• CSCdp41376

Multiprotocol Label Switching (MPLS) imposition load balancing adjacency entry updates might

cause the Gigabit Switch Router (GSR) performance line cards to reload. There is no workaround.

• CSCdp42529

A Cisco 7200 VXR router might experience a situation where switched virtual circuits (SVCs) are

disconnected intermittently and then recovered after 7 to 20 hours. There is no workaround.