Cisco Cisco IOS Software Release 12.2(4)YA

The Bridge MIB feature, extracted from RFC 1493, defines objects for managing MAC bridges between 
LAN segments. The Bridge MIB feature provides information regarding various ports of the bridge, 
Spanning Tree Protocol (STP), and transparent bridging, and supports dot1dBase, dot1dStp, and 
dot1dTp standards.

For information regarding the features supported in the Cisco IOS Release 12.3(8)T, see the 
Cross-Platform Release Notes and New Feature Documentation links at the following location on 

:

This URL is subject to change without notice. If it changes, point your web browser to 

, and 

click the following path:

Service & Support: Technical Documents: Cisco IOS Software: Release 12.3: Release Notes:  
Cross-Platform Release Notes (Cisco IOS Release 12.3(8)T)

The following sections describe limitations concerning the new hardware and software features 
supported by the Cisco 800 series routers for Cisco IOS Release 12.2(4)YA and 12.3(8)YA.

The following limitations apply for the No Service Password Recovery feature:

After the feature is configured, it remains configured even after router reload (the command will be 
listed in running configuration). It is not necessary to write this configuration into NVRAM to keep 
the feature enabled between reloads.

To enable the feature, disable the break bit and the bit to ignore the startup configuration. Set the 
boot bits value in the configuration register.

If you want to change configuration register value after the No Service Password Recovery feature 
is enabled, the above restrictions still apply.

 lists the meanings of the software configuration memory bits.

00 to 03

0x0000 to 0x000F

Boot field

06

0x0040

Causes system software to ignore NVRAM 
contents

07

0x0080

OEM bit enabled

08

0x0100

Break disabled

09

0x0200

Use secondary bootstrap