link avoidance

[morrowc.lists at gmail.com (Christopher Morrow)]

On Wed, May 6, 2015 at 6:56 PM, Randy Bush <randy at psg.com> wrote:
> a fellow researcher wants
>
>     > to make the case that in some scenarios it is very important for a
>     > network operator to be able to specify that traffic should *not*
>     > traverse a certain switch/link/group of switches/group of links
>     > (that's true right?). Could you give some examples? Perhaps point
>     > me to relevant references?
>
> if so, why? security?  congestion?  other?  but is it common?  and, if

'Level3 Maintenance for Fiber path X on date Y'

where 'fiber path x' is one of your paths from A to B. Gracefully move
traffic (isis/ospf/rip/etc metric jackery), return traffic when the
crisis is past.

> so, how do you do it?
>
> randy