Cisco Cisco Aironet 1400 Wireless Bridge Notas de publicación

Fragmented IP packets may be used to evade signature inspection.

IPS signatures utilizing the regular expression feature of the ATOMIC.TCP signature engine 
may cause a router to crash resulting in a denial of service.

There are mitigations and workarounds for these vulnerabilities. Cisco has made free software 
available to address these vulnerabilities for affected customers.

This advisory is posted at:

.

CSCsb04925—Bridge displays junk characters when show controllers command is issued.

When show controllers dot110 is entered, it displays a serial number with a junk character.

CSCsc21018—1400 Series bridge shows non-root IP address as 0.0.0.0

When non-root bridges are configured to use DHCP IP Address, the show dot11 association output 
shows non-root IP address as 0.0.0.0 despite the fact that IP address has been successful allocated 
and received by the non-root bridge. This does not affect any IP communication of root or non-root 
bridge at all.

Workaround: Issuing a shutdown and no shutdown command on the non-root radio interface will 
allow non-root to re-associate to the root bridge after it receives the DHCP IP address and 
communicates the IP address to the root bridge.

Alternatively, use the mac-address command to set the BVI 1 interface mac-address to the same as 
the non-root radio mac-address will allow root bridge to snoop the DHCP IP address and update the 
association table automatically. Normally, BVI 1 mac-address is the FastEthernet mac-address of the 
bridge. All IP traffic uses this BVI mac-address while root bridge keeps track of non-root with the 
uplink.

If you need information about a specific caveat that does not appear in these release notes, you can use 
the Cisco Bug Toolkit to find select caveats of any severity. Click this URL to browse to the Bug Toolkit:

(If you request a defect that cannot be displayed, the defect number might not exist, the defect might not 
yet have a customer-visible description, or the defect might be marked Cisco Confidential.)

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.

The Cisco Aironet 1400 Series Wireless Bridge Mounting Instructions provides detailed instructions for 
installing and mounting the bridge.