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fast-reroute per-link priority-limit high level 1

I dig to know what means "fast-reroute per-link priority-limit high level 1" command.

It is under isis of address family ipv4 unicast.

I tried to read Cisco command guide, but really don`t know what its means.

 

Generally I know "fast-reroute per-link" portion. But what means "priority-limit high level 1" or "priority-limit high level 2" portion.

 

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i will try to answer your query ,

 

if you know "fast-reroute per-link" , and how does it works then consider " fast-reroute per-link priority-limit high level 1" as more granular form of this command .

 

so lets take below few configuration example :

 

- Fast-reroute per-link priority-limit critical level 1

This will enable fast re-route LFA computation for level - 1 critical priority prefix only

 

- Fast-reroute per-link priority-limit high level 1

This will enable fast re-route LFA computation for level - 1 high and critical priority prefix only

 

HTH 

Sunil Bhadauria

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View solution in original post

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That is your isis level 1 and level 2 . 

 

 

HTH 

Sunil Bhadauria

Kindly rate all helpfull posts 

 

View solution in original post

4 REPLIES 4
Highlighted

i will try to answer your query ,

 

if you know "fast-reroute per-link" , and how does it works then consider " fast-reroute per-link priority-limit high level 1" as more granular form of this command .

 

so lets take below few configuration example :

 

- Fast-reroute per-link priority-limit critical level 1

This will enable fast re-route LFA computation for level - 1 critical priority prefix only

 

- Fast-reroute per-link priority-limit high level 1

This will enable fast re-route LFA computation for level - 1 high and critical priority prefix only

 

HTH 

Sunil Bhadauria

Kindly rate all helpfull posts 

View solution in original post

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Thanks Sunil.

How to classify level 1 and level 2?

 

 

Highlighted

That is your isis level 1 and level 2 . 

 

 

HTH 

Sunil Bhadauria

Kindly rate all helpfull posts 

 

View solution in original post

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Ok.

Now I see.

Thanks Sunil.