Datasheet

34
Release Notes for Catalyst 4500 Series Software Release 7.x
OL-1983-28
Open and Resolved Caveats in Software Release 7.6(2)
• If the RIT patch cable that connects the workstation to a Type1A Balun is pulled out too quickly, the
port moves directly from fwd to loopback (fwd) state. After the port detects its own BPDU, it
transitions to the blocking state. The interval in which the port is looped back may also loopback the
outgoing data traffic. If port security has been enabled, then data traffic will be secured on that port;
incoming traffic from the original ports will be restricted.
Workaround: To remove the secured MAC address on the secured port, configure the agetimer to a
minimum value. After some time, the secured MAC address is automatically cleared from that port.
This problem is resolved in software release 7.6(3). (CSCeb12104)
Open and Resolved Caveats in Software Release 7.6(2)
These sections describe the open and resolved caveats in supervisor engine software release 7.6(2):
• Open Caveats in Software Release 7.6(2), page 34
• Resolved Caveats in Software Release 7.6(2), page 34
Open Caveats in Software Release 7.6(2)
These caveats are open in software release 7.6(2):
• If the RIT patch cable that connects the workstation to a Type1A Balun is pulled out too quickly, the
port moves directly from fwd to loopback (fwd) state. After the port detects its own BPDU, it
transitions to the blocking state. The interval in which the port is looped back may also loopback the
outgoing data traffic. If port security has been enabled, then data traffic will be secured on that port;
incoming traffic from the original ports will be restricted.
Workaround: To remove the secured MAC address on the secured port, configure the agetimer to a
minimum value. After some time, the secured MAC address is automatically cleared from that port.
(CSCeb12104)
Resolved Caveats in Software Release 7.6(2)
These caveats are resolved in software release 7.6(2):
• The lower level ground start (gs) code contains two tables: port security and CAM. When the ageout
timer expired, the autolearned MAC was cleaned from the security table but not from the CAM table.
This situation resulted in a security violation.
Workaround: Delete the MAC address from the gs CAM table and the security table during ageout.
This problem is resolved in software release 7.6(2). (CSCeb27176)
• When configured as a VMPS client, a switch may reset upon receiving multiple MAC addresses on
a dynamic port.
Workaround: Downgrade the software to an image that does not have the fix for CSCea5001. This
problem is resolved in software release 7.6(2). (CSCin43958)
• After you reboot a Catalyst 4500 series switch with an upgraded image and enable VMPS, the ports
that are configured for dynamic VLAN assignment may not have connectivity.
Workaround: Physically disconnect and reconnect the cable to the port. This problem is resolved
in software release 7.6(2). (CSCea08895)