partition avoidance about IS-IS

[vagrant_lau]

Hi,

Is there anybody know what is the command "partition avoidance" in ISIS used for? and can you please give an example for me, thanks a lot!

vagrant

[mchin345]

To cause an IS-IS Level 1-2 border router to stop advertising the Level 1 area prefix into the Level 2 backbone when full connectivity is lost between the border router, all adjacent Level 1 routers, and end hosts, use the partition avoidance command in router configuration mode. To disable this output format, use the no form of the command

[vagrant_lau]

I have got it, Thank you very much. But I still don't know the advatange of it, can u please give me an example with topology? ^_^