Troubleshooting Guide

For detailed information on Cisco bug IDs, refer to the Bug Toolkit (registered customers only) .
Refer to Cisco Catalyst 6500 Series Switches Release Notes for more Catalyst 6000 and 6500
documented bug fixes.
Catalyst 5000 and 5500 Switches
This table lists several known issues found on the Catalyst 5000 and 5500 switches.
Table 8
CSCdm80035
(registered
customers
only)
5.2.3,
5.3.1a
6500, the connection can
potentially not reconnect. A
symptom of this issue can be
that a Gigabit NIC does not
connect after reset or
disconnect.
CSCdm88013
(registered
customers
only)
5.2.3,
5.3.1a
Occasionally, host NICs
connected to WS-X6248-TEL or
WS-X6248-RJ-45 modules can
incorrectly revert to half-duplex
after an autonegotiation failure.
Cisco Bug ID
Resolved
In
Description
CSCdt28585
(registered
customers
only)
5.5(6)
Directly connected hosts (PCs,
routers, and servers) can
indicate a connected state in
the output of a show port
command, but do not forward
Xmit-Broadcast frames. This
causes connectivity issues that
are only fixed when you issue
the set port disable mod/port
and the set port enable
mod/port commands.
CSCdr50629
(registered
customers
only)
5.5(3)
Ports on WS-X5225R, WS-
X5234, and WS-X5201R
modules do not transmit unicast
frames after a scheduled test of
the packet buffers. The
workaround is to disable the
packet buffer test.
CSCdr03818
(registered
customers
only)
4.5(7), 5.4
(2)
The WS-X5225R and WS-
X5234 modules fail to negotiate
the duplex mode correctly after
a system reset or power cycle
with Sun workstations Ultra 5.
CSCdm51653
(registered
customers
only)
4.5(3), 5.1
(2a)
Autonegotiation between Sun
10/100 NICs and certain
Catalyst 5000 family modules
(such as the WS-X5225R) can
result in speed or duplex
mismatches under certain
conditions. The problem
typically occurs after the
module is reset or the switch
port is disabled and reenabled.
The workaround is to
disconnect and reconnect the
cable that connects the
workstation to the switch port.
CSCdk32984
(registered
customers
only)
4.2(2)
The 48-port, 10BASE-T
Ethernet module (WS-X5012)
incorrectly drops valid frames
with dribble bits (extra bits
added to frames by some end
stations and transceivers).
CSCdj82035
(registered
customers
only)
3.2(2), 4.1
(3)
Under heavy traffic conditions,
ports 1 through 24 (or ports 25
through 48) of the 48-port,
10BASE-T Ethernet module
(WS-X5012) can stop