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

OL-4215-01

Resolved Caveats

• CSCdy40828

If the switch stack is a designated bridge in the LAN and another switch is connected to the switch

stack through redundant links and has one of these redundant ports in a blocking state, the

spanning-tree state topology is now the same after configuration changes in the LAN. For example,

if the root bridge has ports that go down and then come back up, the switch stack remains a

designated bridge after the spanning-tree state stabilizes.

• CSCdz29910

While in the interface-range configuration mode, if you use the no channel-group interface

configuration command or change the channel-group mode by using the channel-group command,

an assert-fail message with traceback information no longer appears.

• CSCdz41019

In a switch stack, if the stack master is reloaded at the same time that an EtherChannel link on a

stack member goes down, the new stack master no longer fails shortly after being elected.

• CSCdz60348

When an output ACL for a VLAN is full, the switch no longer drops all the packets routed or sent

to that VLAN. This problem no longer occurs for Layer 3 features, such as unicast routing, multicast

routing, and fallback bridging.

• CSCdz69741

If there is a lot of SNMP polling activity and MAC notification traps being sent on the switch,

entering the mac-address-table notification history-size value global configuration command to

change the MAC address notification table history size no longer causes the switch to fail.

• CSCdz71127

See CSCea02355.

• CSCdz79082

A broadcast storm no longer occurs in a bridge group under these conditions:

–

When a port in the VLAN in which fallback bridging is enabled receives a non-IP packet with

the bridge protocol data unit (BPDU) indicator bit set in the ISL header.

–

The destination MAC address has not been learned in the bridge group and at least one port in

the VLAN is in the blocking state.

• CSCea02137

When an undefined aggregate policer is configured in a policy-map, the switch no longer generates

the wrong aggregate policer for it.

• CSCea02355 and CSCdz71127

Cisco routers and switches running Cisco IOS software and configured to process Internet Protocol

version 4 (IPv4) packets are vulnerable to a Denial of Service (DoS) attack. A rare sequence of

crafted IPv4 packets sent directly to the device might cause the input interface to stop processing

traffic when the input queue is full. No authentication is required to process the inbound packet.

Processing of IPv4 packets is enabled by default. Devices running only IP version 6 (IPv6) are not

affected. A workaround is available.

Cisco has made software available, free of charge, to correct the problem.

This advisory is available at

http://www.cisco.com/warp/public/707/cisco-sa-20030717-blocked.shtml

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