Cisco Cisco IOS Software Release 12.2(55)SE Release Notes
42
Release Notes for the Catalyst 3750, 3560, 2975, 2960-S, and 2960 Switches, Cisco IOS Release 12.2(55)SE and Later
OL-23054-07
Resolved Caveats
The status of certain ports is changed to err-disable state.
There is no workaround.
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CSCut42591 (Catalyst Switch 2960-S)
High CPU (up to 100%), Device crash, Spanning-tree loop, MAC flaps (on unauth port) symptoms are
observed. In addition, when SPAN is configured on unauth port, packets are still captured.
observed. In addition, when SPAN is configured on unauth port, packets are still captured.
Workaround is to unconfigure 'authentication control-direction in'
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CSCuu97954 (Catalyst Switch 3750)
3750G running 12.2(55)SE3 link isn't coming up due to auto negotiation problem Link stays in down
(not connected) state. Issue discover during server deployments.
(not connected) state. Issue discover during server deployments.
Workaround is to reload the switch to clear symptoms.
Caveats Resolved in Cisco IOS Release 12.2(55)SE10
•
CSCua89434 (Catalyst Switch 2960-S)
When large bursty traffic is sent on a port, the queue gets stuck and shows a
SUPQ-4-PORT_QUEUE_STUCK error message.
SUPQ-4-PORT_QUEUE_STUCK error message.
There is no Workaround. The switch has to be rebooted to recover.
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CSCtq21722
When SNMP inform hosts are configured on the switch, the switch may reload when configured for
SNMP.
SNMP.
The workaround is to remove the SNMP host configurations for SNMP informs.
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CSCuo84660
When updating the running configuration using any type of remote file transfer (via SNMP or copy
command), and when the source IP resolves to a DNS hostname longer than 63 bytes, an error
message is seen. There is no impact to the system. The running configuration will update as
expected.
command), and when the source IP resolves to a DNS hostname longer than 63 bytes, an error
message is seen. There is no impact to the system. The running configuration will update as
expected.
The workaround is to copy the file to a local storage first and then copy it from the local storage to
the running configuration.
the running configuration.
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CSCur53506 (Catalyst Switch 3750)
When allowed vlan add/remove is executed on a switchport protected interface, broadcast will be
flooded to this interface.
flooded to this interface.
There is no workaround.
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CSCus52129 (Catalyst Switch 3750)
A port will remain in a MAB Running state even though the MAC address has been learned on the
interface and the device continues to send traffic. This is seen when:
interface and the device continues to send traffic. This is seen when:
–
switch is running 12.2(55)SE4, 12.2(55)SE8, 12.2(55)SE9
–
the client device is connected to a member switch port.
–
authentication open is configured on the port
–
authentication order mab dot1x is configured on the port.