CHAPTER
7-1
Cisco 7600 Series Router Cisco IOS Software Configuration Guide, Release 12.2SX
OL-4266-08
7
Configuring NSF with SSO
Supervisor Engine Redundancy
This chapter describes how to configure supervisor engine redundancy using Cisco nonstop forwarding
(NSF) with stateful switchover (SSO).
Note • For complete syntax and usage information for the commands used in this chapter, refer to the Cisco
IOS Master Command List, Release 12.2SX at this URL:
http://www.cisco.com/en/US/docs/ios/mcl/122sxmcl/12_2sx_mcl_book.html
• Release 12.2(18)SXD and later releases support nonstop forwarding (NSF) with stateful switchover
(SSO) on all supervisor engines.
• All releases support RPR and RPR+ (see Chapter 8, “Configuring RPR and RPR+
Supervisor Engine Redundancy”)
• NSF with SSO does not support IPv6 multicast traffic.
This chapter consists of these sections:
• Understanding NSF with SSO Supervisor Engine Redundancy, page 7-1
• Supervisor Engine Configuration Synchronization, page 7-9
• NSF Configuration Tasks, page 7-11
• Copying Files to the Redundant Supervisor Engine, page 7-20
Tip For additional information (including configuration examples and troubleshooting information), see the
documents listed on this page:
http://www.cisco.com/en/US/products/hw/routers/ps368/tsd_products_support_series_home.html
Understanding NSF with SSO Supervisor Engine Redundancy
These sections describe supervisor engine redundancy using NSF with SSO:
• NSF with SSO Supervisor Engine Redundancy Overview, page 7-2
• SSO Operation, page 7-2
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