Cisco Cisco Aironet 1400 Wireless Bridge Notas de publicación

This section lists open and resolved caveats in Cisco IOS Release 12.3(2)JA2 for the bridge.

These caveats are open in Cisco IOS Release 12.3(2)JA2 for the bridge:

CSCec78900—High CPU use sometimes slows throughput on bridges.

These caveats are resolved in Cisco IOS Release 12.3(2)JA2:

CSCef60659, CSCsa59600—A document that describes how the Internet Control Message Protocol 
(ICMP) could be used to perform a number of Denial of Service (DoS) attacks against the 
Transmission Control Protocol (TCP) has been made publicly available. This document has been 
published through the Internet Engineering Task Force (IETF) Internet Draft process, and is entitled 
“ICMP Attacks Against TCP” (draft-gont-tcpm-icmp-attacks-03.txt).

These attacks, which only affect sessions terminating or originating on a device itself, can be of 
three types:

1. Attacks that use ICMP “hard” error messages 
2. Attacks that use ICMP “fragmentation needed and Don’t Fragment (DF) bit set” messages, also 
known as Path Maximum Transmission Unit Discovery (PMTUD) attacks 
3. Attacks that use ICMP “source quench” messages

Successful attacks may cause connection resets or reduction of throughput in existing connections, 
depending on the attack type.

Multiple Cisco products are affected by the attacks described in this Internet draft.

Cisco has made free software available to address these vulnerabilities. In some cases there are 
workarounds available to mitigate the effects of the vulnerability.

This advisory is posted at

The disclosure of these vulnerabilities is being coordinated by the National Infrastructure Security 
Coordination Centre (NISCC), based in the United Kingdom. NISCC is working with multiple 
vendors whose products are potentially affected. Its posting can be found at: 
http://www.niscc.gov.uk/niscc/docs/re-20050412-00303.pdf?lang=en.

CSCef96804—The RSSI DC output port now gives correct signal strength readings.

CSCeg12593—Bridges now pass VTP information when the native VLAN on the bridge is not 
VLAN 1.

For the most up-to-date, detailed troubleshooting information, refer to the Cisco TAC website at 

. Click Technology Support, choose Wireless 

from the menu on the left, and click Wireless LAN.