Cisco Cisco IOS Software Release 12.2(20)S

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Cisco Nonstop Forwarding
  Feature Information for Cisco Nonstop Forwarding
26
Stateful Switchover
Technical Assistance
Feature Information for Cisco Nonstop Forwarding
 lists the features in this module and provides links to specific configuration information. Only 
features that were introduced or modified in Cisco IOS Release 12.0(22)S or a later release appear in the 
table.
Use Cisco Feature Navigator to find information about platform support and software image support. 
Cisco Feature Navigator enables you to determine which Cisco IOS and Catalyst OS software images 
support a specific software release, feature set, or platform. To access Cisco Feature Navigator, go to 
. An account on Cisco.com is not required.
Table 2
Cisco Nonstop Forwarding Feature History
Description
Link
The Cisco Support website provides extensive online 
resources, including documentation and tools for 
troubleshooting and resolving technical issues with 
Cisco products and technologies. Access to most tools 
on the Cisco Support website requires a Cisco.com user 
ID and password. If you have a valid service contract 
but do not have a user ID or password, you can register 
on Cisco.com.
Release
Modification
12.0(22)S
This feature was introduced.
12.0(23)S
Support was added for 1xGE and 3xGE line cards on the 
12.0(24)S
Support was added for the following line cards on the 
Engine 1
2-port OC-12/STM-4c DPT
Engine 2
1-port OC-48/STM-16c DPT 
8-port OC-3/STM-1c ATM
IP Service Engine (ISE)
4-port OC-3c/STM-1c POS/SDH ISE
8-port OC-3c/STM-1c POS/SDH ISE
16-port OC-3c/STM-1c POS/SDH ISE
4-port OC-12c/STM-4c POS/SDH ISE
1-port OC-48c/STM-16c POS/SDH ISE
4-port channelized OC-12/STM-4 (DS3/E3, OC-3c/STM-1c) 
POS/SDH ISE 
1-port channelized OC-48/STM-16 (DS3/E3, OC-3c/STM-1c) 
POS/SDH ISE