Installation guide

Release Notes for Catalyst5000 Family Software Release4.x

OL-2306-01

Open and Resolved Caveats in Software Release 4.4(1)

• In some cases, when you connect a port on the 24-port 10/100 BASE-TX Fast Ethernet module

(WS-X5225R) to an end station, the port might loop data back to itself. If spanning tree is disabled

on the port, this problem can negatively affect switch performance. If spanning tree is enabled, the

port is automatically disabled. You can verify that the problem is occurring, and identify the

problem port, by entering the show cdp neighbors command and checking to see if the switch itself

is listed as a neighbor.

Workaround: Di sable and reenable the problem port. (CSCdm26889)

• In some cases, a Catalyst 5000 family switch with redundant supervisor engines might reset as a

result of the change from Daylight Saving Time to Standard Time. This problem only occurs if the

Daylight Saving Time adjustment is enabled (using the set summertime enable command) and the

switch has not been reset or power-cycled since the change to Standard Time. (CSCdk57762)

Resolved Caveats in Software Release4.4(1)

Note For a description of open caveats in software release4.4(1), see the “Open Caveats in Software

Release4.4(1)” section on page51.

This section describes caveats resolved in software release4.4(1):

• On a Catalyst 5000 family switch with redundant supervisor engines, if you enable both port

security and VMPS, you might see a “Minor hardware problem” error on the standby supervisor

engine after a reset.

Workaround: Reset the standby supervisor engine. This problem is resolved in software

release4.4(1). (CSCdk59755)

• If two IEEE 802.1Q-capable peers are negotiating a trunk when a spanning tree loop or prolonged

line-rate traffic exists, a port inconsistency error might occur, causing an excessive number of

syslog messages to be sent to the console. This problem is resolved in software release4.4(1).

(CSCdk29882)

• In a network with a large number of Token Ring ports assigned to different TrCRFs, spanning tree

might not converge correctly, causing network loops.

Workaround: Increase the IBM STP maxage timer and forward delay timer to allow spanning tree

to converge. Another workaround is reduce the number of Token Ring ports in a single Catalyst

5000 family switch. This problem is resolved in software release4.4(1). (CSCdk63967)

• After a switchover from the active to the standby supervisor engine, any Token Ring modules

(WS-X5030 or WS-X5031) installed in the chassis will reset, resulting in a 3- to 5-minute

interruption for users attached to the modules. This problem is resolved in software release4.4(1).

(CSCdk63991)

• If you reset a Catalyst5000 family switch with a Supervisor Engine II module when the in-band

(sc0) interface is assigned to a Token Ring VLAN, attempts to connect to the switch using IP (such

as a Telnet connection) fail.

Workaround: Connect to the switch through the console port and reconfigure the sc0 interface

using the set interface command. This problem is resolved in software release4.4(1).

(CSCdk66002)