Installation guide

Release Notes for Catalyst5000 Family Software Release4.x

OL-2306-01

Open and Resolved Caveats in Software Release 4.5(1)

• In some cases, when you connect a port on the 24-port 10/100BASE-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: Disable and reenable the problem port. (CSCdm26889)

• In some cases, if you configure a port as a SPAN source port and subsequently configure the same

port as the SPAN destination, the SPAN destination port might be unable to receive traffic if any

other SPAN-related commands are executed on the port. To avoid the problem, disable SPAN before

changing the SPAN configuration. If the problem occurs, reset the module with the problem SPAN

port. (CSCdm43384)

• Frame Priority is set incorrectly from Ethernet to FDDI. A new command, set option fddi-user-pri,

has been added to enable the priority field in the FDDI packets. The command requires FDDI

software release 3.2(1a) and supervisor engine software release 5.5(2) or later. This problem is

resolved in software release 5.5(2). (CSCdr42228)

Resolved Caveats in Software Release4.5(1)

Note For a description of open caveats in software release4.5(1), see the “Open Caveats in Software

Release4.5(1)” section on page45.

This section describes caveats resolved in software release 4.5(1):

• In some cases, if you change the VLAN assignment of ports in a Fast EtherChannel, some ports are

placed in the errdisable state and the channel is not renegotiated. The correct behavior is that the

channel is torn down and renegotiated. This problem is resolved in software release4.5(1).

(CSCdk32807)

• With Multilayer Switching (MLS) enabled on a Catalyst5000 family switch with an NFFC and one

or more Token Ring modules (WS-X5030 or WS-X5031), after booting the switch you might see

error messages similar to the following as a result of high CPU utilization by MLS:

1/11/1998,13:02:04:MLS-4:Too many moves, stop MLS for 5 sec!(60000000)

11/11/1998,13:04:12:MLS-4:Resume MLS after detecting too many moves

Workaround: Di sable MLS on the switch. This problem is resolved in software release4.5(1).

(CSCdk63976)

• After a topology change occurs in a Token Ring environment, when STP reconverges, source-routed

frames originating from a Catalyst 5000 family Token Ring module (WS-X5030 or WS-X5031) are

not forwarded across an ISL trunk link to another switch. Non-source-routed frames are forwarded

correctly.

Workaround: Enter the clear cam dynamic command on the affected switches. This problem is

resolved in software release4.5(1). (CSCdk63561)

• In a Token Ring network, if a TrBRF VLAN is running IEEE STP, the Catalyst 5000 family switch

does not flood IBM STP BPDUs from other sources, potentially preventing SRB devices running

IBM STP from properly creating a loop-free spanning tree topology.

Workaround: Change the TrBRF STP mode to IBM and force forwarding between the TrCRFs and

TrBRFs when in SRT mode. This problem is resolved in software release4.5(1). (CSCdk54704)