Installation guide
52
Release Notes for Catalyst5000 Family Software Release4.x
OL-2306-01
Open and Resolved Caveats in Software Release 4.4(1)
• In some cases, after a switchover from the active to the standby supervisor engine, the SPAN
destination port might not function correctly. (CSCdk55360)
• With Multilayer Switching (MLS) enabled on a Catalyst5000 family switch with an NFFC and one
or more Token Ring modules (WS-X5030 or WS-X5031), after booting the switch you might see
error messages similar to the following as a result of high CPU utilization by MLS:
1/11/1998,13:02:04:MLS-4:Too many moves, stop MLS for 5 sec!(60000000)
11/11/1998,13:04:12:MLS-4:Resume MLS after detecting too many moves
Workaround: Di sable MLS on the switch. (CSCdk63976)
• In some cases, multiple Catalyst5000 family switches connected through ISL trunk ports might all
report that they are the designated root for the default TrBRF (VLAN1005). (CSCdk63476)
• After a topology change occurs in a Token Ring environment, when STP reconverges, source-routed
frames originating from a Catalyst 5000 family Token Ring module (WS-X5030 or WS-X5031) are
not forwarded across an ISL trunk link to another switch. Non-source-routed frames are forwarded
correctly.
Workaround: Enter the clear cam dynamic command on the affected switches. (CSCdk63561)
• In a Token Ring network, if a TrBRF VLAN is running IEEE STP, the Catalyst 5000 family switch
does not flood IBM STP BPDUs from other sources, potentially preventing SRB devices running
IBM STP from properly creating a loop-free spanning tree topology.
Workaround: Change the TrBRF STP mode to IBM and force forwarding between the TrCRFs and
TrBRFs when in SRT mode. (CSCdk54704)
• On some switch ports, if you enable port security on the port before the port is in the spanning tree
forwarding state, port security might shut the port down. This problem occurs only if BPDUs,
broadcast packets, or other traffic is received on the port before the port enters the forwarding state.
This problem affects these products:
–
WS-C2926—Catalyst 2926 switch
–
WS-X5223—24-port 3 segment 100BASE-TX (RJ-45 connector)
–
WS-X5224— 24-port 10/100BASE-TX (RJ-45 connector)
–
WS-X5020—48-port 4 segment 10BASE-T (Telco connector)
–
WS-X5010—24-port 10BASE-T (Telco connector)
–
WS-X5014—48-port 10BASE-T (RJ-45 connector)
–
WS-X5012—48-port 10BASE-T (Telco connector)
–
WS-X5012a—48-port 10BASE-T (Telco connector)
–
WS-X5013— 24-port 10BASE-T (RJ-45 connector)
Workaround: Enable the port security feature after the port is in the forwarding state (enter the
show spantree mod_num/port_num command to verify the spanning tree state). (CSCdk73206)
• Under some circumstances, several ports might incorrectly be assigned the same ifIndex value (you
can see the ifIndex values for ports using the show port command). If multiple ports share an
ifIndex value, when you change the configuration on one port other ports with the same ifIndex
value might be affected. If this problem occurs, clear the entire switch configuration using the clear
config all command (make sure you back up your switch configuration before entering this
command or your configuration will be lost) and reset the switch. (CSCdk74506)