Datasheet

Release Notes for Catalyst 4500 Series Software Release 7.x

OL-1983-28

Open and Resolved Caveats in Software Release 7.6(4)

• When you use the clear cam permanent command to clear a permanent CAM filter entry, the filter

entry is not removed from the hardware tables and traffic is dropped. This problem is resolved in

software release 7.6(5). (CSCed11672)

• You can configure the auto-configure feature for port security in software release 7.6(5). However,

there is no support for port security autoconfigure in the Catalyst 4500 series platform code.

Workaround: Do not enable the auto-configure command for port security. Instead, you can add

secure MAC addresses using the set port security command. This problem is resolved in software

release 7.6(5). (CSCed24331)

Open and Resolved Caveats in Software Release 7.6(4)

These sections describe the open and resolved caveats in supervisor engine software release 7.6(4):

• Open Caveats in Software Release 7.6(4), page 31

• Resolved Caveats in Software Release 7.6(4), page 31

Open Caveats in Software Release 7.6(4)

These caveats are open in software release 7.6(4):

• 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(4)

These caveats are resolved in software release 7.6(4):

• When you are running software release 7.5(1) or 7.6(1) on the Catalyst 4003 switches with a

Supervisor Engine I and on the Catalyst 4003 switch with a Supervisor Engine II, the wrong value

might display for the portSecurityLastSRcAddr when a link-down trap is sent for a security

violation. This problem is resolved in software release 7.6(4). (CSCeb49723)

• When a switch receives a filtered CAM entry on a VLAN with port security enabled, the switch may

shut down the port. This problem is resolved in software release 7.6(4). (CSCin51183)

• If you set the vmVlan to a value that is larger than 1023, an assert failure occurs. This problem is

resolved in software release 7.6(4). (CSCeb67164)

• Communication is lost after 15 seconds when Uplinkfast and the root port come up after a switch

over. This situation causes some data packets to leak through the unblocked port before the port can

send out dummy multicast packets. If the leaked packets reach the distribution switch later than the

dummy multicast packets, the packets are considered as valid and are not removed from the CAM

table until the packets age out. This problem is resolved in software release 7.6(4). (CSCeb58149)