Cisco Cisco IOS Software Release 12.2(55)SE

This problem has been corrected.

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The switch fails when DHCP snooping is configured and packet data traffic is excessive. The traffic 
exhausts the I/O memory and triggers the switch to crash.

There is no workaround.

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When a member switch port security is used with port-based dot1x authentication and the switch 
MAC address is sticky, a connected device authenticates itself. Its MAC address is added as sticky 
in the switch configuration and in the port security tables of the stack switches. When the switch is 
shut down, the device MAC address is removed from the master switch, but it is retained in the 
member switch security tables. When the interface is re-enabled, the device MAC address is restored 
to the master switch configuration.

The workaround is to use port security without dot1x authentication.

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When you disconnect the spanning tree protocol (STP) peer link, the STP port path cost 
configuration changes. 

There is no workaround.

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If a static MAC address entry is configured for an IP address in the global routing table, ping 
requests are sent through the global context, and replies are sent through Virtual Routing and 
Forwarding (VRF). This is a VRF leak.

The workaround is to remove the static MAC address entry.

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The buffer space of a switch running TCP applications is full while the TCP sessions are in the 
TIME_WAIT state. Buffer space becomes available after the TCP session the closed.

There is no workaround.

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On a switch running Cisco IOS release 12.2(46)SE, the output of the show interfaces privileged 
EXEC command shows 0 packets for port channel input and output rates.

The workaround is to reload the switch by entering the reload privileged EXEC command.

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A switch that has at least one trunk port configured might fail when you configure more than 950 
VLANS by using the vlan vlan-id global configuration command.