cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
140
Views
0
Helpful
1
Replies
Highlighted
Beginner

ospf and isis

How will you drain a router ? draining -> the router should not attract traffic

1 REPLY 1
Highlighted
Hall of Fame Master

Re: ospf and isis

Hello @Aneek ,

look for the OSPF stub feature.

Here the idea is the following:

increase to the max possible value the metric of each link in the router LSA (65,535 max in 16 bit integers in intra area OSPF route)  so that this router will not be used as transit.

This function can be useful after router reload when waiting for BGP to converge the router can be not able to be a exit point to the internet before receiving all the prefixes from upstream provider.

In ISI-IS there is a flag bit in the LSP that is called overload OL that has the same meaning if OL is set the router should not be used as a transit.

Again this can be temporary or permanent

 

Hope to help

Giuseppe

 

CreatePlease to create content
Content for Community-Ad

Cisco COVID-19 Survey