Datasheet

Release Notes for Catalyst 4500 Series Software Release 7.x

OL-1983-28

Open and Resolved Caveats in Software Release 7.6(1)

• The multicast entry for a trunk port in a nondefault VLAN disappears when you configure

permanent CAM entries on the trunk port for any VLAN other than the default VLAN and reboot

the system.

Workaround: Clear the permanent CAM and reconfigure the CAM entries. This problem is

resolved in software release 7.6(1). (CSCea31013)

• If you enable PortFast and BPDU guard on a port, you should not connect that port to a switch.

BPDU storms will occur if there is a loop on the switch, and you cannot shut down the CPU until

the loop is removed.

Workaround: Never introduce a loop to a switch that is not running spanning tree. Also, if you

enable PortFast and BPDU guard on a port, you should not connect that port to a switch. This

problem is resolved in software release 7.6(1). (CSCdz03594)

• When configuring the local-user authentication feature, you configure a username and password

combination for each user. If the user logs in using Telnet, there is no problem. However, if the user

logs in using Secure Shell (SSH), the username and password combination fails because you have

to set the password with the set password command.

Workaround: There is no workaround. This problem is resolved in software release 7.6(1).

(CSCea21326)

• Software release 7.5(1) does not apply the 96-percent power efficiency of the 1400 W DC power

supply for inline power devices. Therefore, the amount of inline power that is allocated by the 1400

DC power supply and tracked by the software will be underestimated by approximately 4 percent.

For example, if the show environment power command indicates that 96 W has been allocated for

inline power, in fact 100 W has been allocated by the 1400 W DC power supply.

Workaround: There is no workaround. (CSCea36031)

• Your system may crash if you are running low on memory and you enabled VMPS change trap. This

problem is resolved in software release 7.6(1).

Workaround: There is no workaround. (CSCea40726)

• When you upgrade a Catalyst 4500 series switch with a Supervisor Engine I or a Catalyst 2948G

switch from software release 4.5(x) to software release 7.5(1) or a later release, those ports that have

the default configuration for port-channeling will experience connectivity problems.

Workaround: Before you upgrade your system software, enter the set port channel mod/port mode

off command on those ports that have default port channeling enabled. If you have already upgraded

your system software, you should enter the set port host mod/port command. (CSCea18590)

• Supervisor Engine II may show the status of a Catalyst 4500 series gateway running 12.2(16.4)T2

as faulty. This problem is resolved in software release 7.6(1).

Workaround: There is no workaround. (CSCin37385)

• Disabling 802.1x does not work for single authentication and multiple host modes. To disable

802.1x, use the port-control force-authorized and clear dot1x configuration commands.

Workaround: No workaround is available. You must enter the clear config all command, and reset

the switch to bring the port back to the normal state. (CSCin41724)