Datasheet

Release Notes for Catalyst 4500 Series Software Release 7.x

OL-1983-28

Open and Resolved Caveats in Software Release 7.6(6)

Resolved Caveats in Software Release 7.6(6)

These caveats are resolved in software release 7.6(6):

• When a user logs in to a Catalyst 4500 series switch with TACACS authentication configured, you

will be prompted for a username even if the TACACS server is unavailable. This prompt might

confuse users who are not aware that the TACACS server is unavailable when they may try to enter

in a valid username/password combination.

Workaround: To successfully log in, enter any value as a username, and use the switch enable

password as the password for authentication. This problem is resolved in software release 7.6(6).

(CSCdz16477)

• When you start a Telnet session to the Catalyst switch using certain Telnet clients, the

Catalyst switch prompt is not displayed until you press the Enter (return) key.

Workaround: Press the Enter key to get to the Catalyst switch prompt. This problem is resolved in

software release 7.6(6). (CSCed45576)

• When you have a VMPS database downloading to the switch (initiated by entering the download

vmps command), the switch might crash during the “VMPS Download” process. This problem is

due to the vmps-port-group field not being specified in the VMPS configuration file. This problem

is resolved in software release 7.6(6). (CSCed43310)

• If you lower the maximum number of MAC addresses allowed on a port using the set port security

mod/port maximum num_of_mac command, you cannot clear all the secured addresses from your

configuration using the clear port security all command.

Workaround: Raise the number of MAC addresses allowed to a higher value using the set port

security mod/port maximum num_of_mac command, and then issue the clear port security all

command. This problem is resolved in software release 7.6(6). (CSCin66276)

• A Catalyst 4000 series or Catalyst 4503 switch with Supervisor Engine I or II or a WS-x5410

module in a Catalyst 5500 switch does not send dummy multicast packets when UplinkFast operates

after no shutdown command has been entered from the original root port. This condition results in

lost communication because the switch does not clear the older MAC table on the root port. This

problem is resolved in software release 7.6(6). (CSCec79652)

• Even though you are unable to configure a private VLAN on a dynamic port from the CLI, a dynamic

port can be configured into a private VLAN when the port receives the information from a VMPS

server. Private VLANs cannot be assigned to dynamic ports. This problem is resolved in software

release 7.6(6). (CSCin62512)

• When you use the clear cam mac_addr command to clear an autolearned 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. This problem is resolved in software release 7.6(6). (CSCin60971)