Cisco Cisco IOS Software Releases 12.2 B

In most NRP-2 configurations, 256 MB DRAM is adequate for up to 6500 sessions. More sessions 
require 512 MB DRAM.

In most NRP-1 configurations, 64 MB DRAM is adequate for up to 750 sessions. More sessions 
require 128 MB DRAM. Using the NRP-1, for an upgrade from an earlier release to Cisco IOS 
Release 12.2(2)B, 128 MB DRAM is recommended.

Cisco IOS Release 12.2(2)B supports the Cisco 6400 NRP-1 module. 

The Cisco 6400 NSP and the NSP with Stratum 3/BITS (NSP-S3B) are supported by Cisco IOS 
Release 12.1(5)DB. The NSP-S3B, otherwise identical to the NSP, is required to use the Building 
Integrated Timing Supply (BITS) Network Clocking software feature. The Cisco 6400 NRP-2 is 
supported by Cisco IOS Release 12.1(5)DC.

Release 12.2(2)B on the NRP-1 is compatible with Release 12.1(5)DB on the NSP. You can upgrade the 
NRP-1 to Release 12.2(2)B while using Release 12.1(5)DB for the NSP. Cisco recommends that you upgrade 
to Release 12.2(2)B for the NSP when this support becomes available.

For NRP-Service Selection Gateway (SSG) users, Cisco IOS Release 12.2(2)B works with the Cisco Service 
Selection Dashboard (SSD) version 2.5(1) and 3.0(1) and Subscriber Edge Services Manager (SESM) 3.1(1).

NRP-1

IOS NRP-1 BASE
IOS NRP-1 MULTIDOMAIN
IOS NRP-1 WEB 
SELECTION

c6400r-g4p5-mz

64 MB for up to 750 sessions

128 MB for over 750 sessions

8 MB

NSP

c6400s-wp-mz
c6400s-html.tar

The standard 64 MB DRAM memory 
configuration supports up to 12K 
virtual circuits (VCs).

128 MB DRAM is recommended for 
supporting up to 32K VCs, or for using 
ATM RMON or ATM Accounting.

128 MB DRAM is also recommended 
for an upgrade from an earlier release 
to Cisco IOS Release 12.1(5)DB.

20 MB or 32 MB 

1

350 MB 
recommended for 
NRP-2 
configurations

1. The 20 MB Flash Disk is no longer available; the 32 MB Flash Disk is now the default Flash configuration.