Datasheet

Release Notes for Catalyst 4500 Series Software Release 7.x

OL-1983-28

Open and Resolved Caveats in Software Release 7.6(5)

These sections describe the open and resolved caveats in supervisor engine software release 7.6(5):

• Open Caveats in Software Release 7.6(5), page 30

• Resolved Caveats in Software Release 7.6(5), page 30

Open Caveats in Software Release 7.6(5)

These caveats are open in software release 7.6(5):

• When you use the clear cam mac_addr command to clear an auto-learned MAC address on a

port-security enabled port from the static CAM, the port can be placed in an inconsistent state and

may not allow the user to configure the same MAC address on another port. If the port continues to

receive the MAC address, the MAC address appears in the dynamic CAM instead of the static CAM.

Workaround: Do not use the clear cam mac_addr command on a secure port. If a port is in an

inconsistent state, use the clear port security mod/port command to clear the MAC address from

the CAM. (CSCin60971)

Resolved Caveats in Software Release 7.6(5)

These caveats are resolved in software release 7.6(5):

• Starting in software release 6.4(7), you may see this warning message on your console:

2003 Dec 01 17:55:01 PST -07:00 %SYS-4-P2_WARN:1/Traffic from permanent host

00:04:c1:82:5f:ff but seen on incorrect port 1/2

In most cases, this message is caused by ARP requests from the switch being flooded back to itself

by a neighbor. Since the source MAC address is the system MAC address, a console message is

logged and the packet is dropped. This problem is resolved in software release 7.6(5).

(CSCed13361)

• In rare cases, when you enable CGMP, the Catalyst 4500 series Supervisor Engine I or

Supervisor Engine II may reload intermittently. There is no workaround. This problem is resolved

in software release 7.6(5). (CSCec72380)

• The packet memory on a Catalyst 4000 series Supervisor Engine may go bad, resulting in data

packets being sent out with an invalid CRC and being discarded by the link partner. Diagnostics have

been added to identify the problem. Once the problem is identified, the switch automatically resets

and comes back up in a “best-effort” mode. In “best-effort” mode, the affected packet buffers are

removed from circulation, and log messages are generated every 30 minutes to warn about the

failures. You should replace a supervisor engine with packet memory errors. This problem is

resolved in software release 7.6(5). (CSCec78085)

• The MAC address does not clear from the static CAM when you enter the clear cam static

command; the MAC address may be learned by both the static and dynamic CAMs.

Workaround: Enter the clear cam command to delete the user-configured static MAC addresses

from the static CAM. If the switch reaches a condition that the same MAC address is learned on

dynamic and static CAM, enter the clear port security and clear cam dynamic commands to clear

the MAC address from the dynamic CAM and reach a “consistent” state. This problem is resolved

in software release 7.6(5). (CSCin61896)