What is " set system highability enable" of command 6509(Catos)

system is cat 6509 (Two sup, Two MSFC)
two supervisors is runnging
i am saw config " set system highability enable" of cat6509"
generally when catos image is upgrade,
set system highability function must disable bye cisco homepage
why is disable highability?
i would like to know function " set system highability enable"

Hi Yeundu,
The High Availability software feature of Cisco Catalyst OS further enhances the Cisco Catalyst 6500 Series hardware redundancy by also providing protocol redundancy. This feature includes stateful protocol redundancy and image versioning
The stateful supervisor switchover is when the switchover time from the active to the standby supervisor is reduced to less than three seconds. This reduced downtime is achieved by synchronizing many of the Layer 2, Layer 3, and Layer 4 protocols1 between the active and standby supervisor engines and is called maintaining protocol state
Have a look at this link it will give you a very clear picture fo this feature
http://www.cisco.com/en/US/partner/products/hw/switches/ps708/products_white_paper09186a0080088874.shtml#wp42722
HTH
Ankur

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Message was edited by: spudnuty

What is " set system highability enable" of command 6509(Catos)

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