Cisco Cisco IOS Software Release 12.4(2)XB Notas de publicación

For information on upgrading to a new software release, see the product bulletin Cisco IOS Software 
Upgrade Ordering Instructions located at:

For information on upgrading IOS images on the MWAM, refer to the

 Cisco Multi-Processor WAN 

:

http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/cfgnotes/mwam_icn.htm

The image download process loads the IOS image onto the three processor complexes on the MWAM.

To perform an ROMMON software upgrade, use the procedure provided in the

 Cisco Multi-Processor 

To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, 
go to the Cisco MIB website on Cisco.com at 

http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml

. 

When using Cisco IOS Release 12.4(2)XB6, observe the following:

The number of PDP contexts supported on a GGSN is dependent on the memory and platform in use 
and the GGSN configuration (for example, whether or not a method of Point to Point Protocol [PPP] 
has been configured to forward packets beyond the terminal equipment and mobile termination, 
whether Dynamic Feedback Protocol [DFP] is being used or the memory protection feature is 
enabled, and what rate of PDP context creation will be supported). 

DFP weighs PPP PDPs against IP PDPs with one PPP PDP equal to eight IP PDPs. 

For the Cisco 7200 series router, the following list shows the maximum number of PDP contexts 
supported on the GGSN according to the memory and Cisco 7206 series router in use when no 
method of PPP has been configured: 

Cisco 7206 VXR NPE-300 with 256 Mb RAM—80,000 IP PDP contexts 

Cisco 7206 VXR NPE-400 router with 512 Mb RAM—135,000 IP PDP contexts 

For the Catalyst 6500 series switch/Cisco 7600 series router, the Cisco MWAM can support up to 
60,000 IP PDP contexts per GGSN instance, with a maximum of 300,000 IP PDP contexts per 
MWAM on which five GGSNs are configured.