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IOS SLB and Stateless failover

mflint
Level 1
Level 1

Trying to compare CSM and IOS SLB features. Read where the CSM can have "stateful" failover (maintains sessions) in a box-to-box scenerio. I also read where the IOS SLB can only provide "stateless" failover (I assume during failover, state/connection information is lost) using HSRP.

Can anyone confirm what I have written?

Your help is much appreciated.

1 Reply 1

stevehall
Level 1
Level 1

That is correct.

The CSM can maintain state on connections on a failover using the "replicate csrp" command. This command is not available on IOS SLB.

The following are links to the CSM commands and IOS SLB commands for your reference...

CSM Config guide, release notes and commands:

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/cfgnotes/csm_3_1/index.htm

IOS SLB commands: http://www.cisco.com/en/US/customer/products/sw/iosswrel/ps1835/products_command_summary_chapter09186a008008805e.html

IOS SLB config guide:

http://www.cisco.com/en/US/customer/products/sw/iosswrel/ps1835/products_configuration_guide_chapter09186a00800ca75d.html

hope that helps

-Steve