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Release Notes for the Catalyst 3750 Switch Cisco IOS Release 12.1(14)EA1

OL-4215-01

Open Caveats

–

The VLAN assigned by the RADIUS server is different than the access VLAN configured on

the port.

This problem does not prevent traffic from being forwarded to the 802.1X client, but the show

port-security privileged EXEC command might indicate that the port is SecureDown when it is

actually SecureUp and forwarding traffic correctly.

The workaround is to restart the interfaces that appear to be out of sync by using the shutdown and

then no shutdown interface configuration commands.

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Gigabit Ethernet ports might have FCS errors when operating at Gigabit speeds on the Catalyst

3750G-24T and Catalyst 3750G-24TS switches. The FCS error rate for this condition is very low.

The workaround is to restart the ports by using the shutdown and then no shutdown interface

configuration commands.

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A Distance Vector Multicast Routing Protocol (DVMRP) tunnel can remain down after reloading

the switch.

There is no workaround.

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Distance Vector Multicast Routing Protocol (DVMRP) does not forward packets correctly.

There is no workaround.

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After booting up a switch stack that has more than 300 VLANs and the maximum number of static

EtherChannel groups (12), all interfaces that are part of an EtherChannel might stay down. This

occurs because the remote switch detects an EtherChannel misconfiguration and disables its ports.

This problem can occur in either PVST+ or Rapid-PVST+ mode.

The workaround is to restart the EtherChannel ports or configure automatic recovery:

–

Use the shutdown and no shutdown interface configuration commands on the remote switch

to restart all err-disabled interfaces

–

Use the errdisable recovery cause channel-misconfig global configuration command to

enable automatic link recovery on the remote switch, and use the errdisable recovery interval

global configuration command to configure a short recovery interval.

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After switches are added to or removed from a switch stack, the reconfiguration processes can defer

normal CPU processes, such as CLI command handling, and make them unresponsive. The duration

of the reconfiguration process depends on the size and nature of the running configuration, but the

delay is not significant until the switch configuration exceeds several thousand lines. After the

update finishes, CLI responsiveness returns.

There is no workaround other than removing commands from the switch configuration.

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On a voice VLAN port with both 802.1X and port security enabled, dynamic secure addresses might

not get deleted when the port is changed from multihost mode to single-host mode. This means that

addresses learned in the multihost mode are still allowed after changing to single-host mode. This

problem occurs under the following conditions:

–

The port is in authorized state.

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Cisco 3520 Guía de instalación Pagina 23

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