[c-nsp] Traffic Engineering Internet links automatically

[Kim Onnel]

This is exactly how we do it, but as you guys pointed, its very boring, and
our upstream isnt that cooperative, my best bet would be waiting for a the
new OER or increasing bandwidth.

*note: in third-world countries, engineers times is not more valuable than
bandwidth.

On 3/27/06, Pete Templin <petelists at templin.org> wrote:
>
> Kim Onnel wrote:
> > I am sure someone has been in my place before and there is something
> that
> > can be done on this matter, i'll try to explain again in more details,
> maybe
> > i missed something, i hope i can get suggestions on Best practices for
> this
> >
> >
> > upstream \
> > upstream ---- multiple links ----- GW-INTERNET---
> > upstream /
> >
> > the multiple links are all terminated on our side at 1 router
> (GW-INTERNET)
> > and the upstream isnt 1 router, but same AS
> >
> > Lets say i have 3 PoS and 2 Giga
> >
> > My manager wakes up each day, checks MRTG, finds that the Giga has some
> room
> > and that PoS is full, so he tells me to move some networks around to
> achieve
> > this, as Gert said above, it is time consuming, specially when moving 1
> /24
> > doesnt do it and half of my day is spent in excel sheets and updating
> > everyone ?
> >
> > What is the correct thing to be done here ?
>
> Ah, more clarification.  Didn't realize that it was the same AS.
>
> Announce all prefixes on all links.  For each of your network
> statements, add "route-map mytuning" to the end.
>
> ip prefix-list prefer-link1 permit x.x.x.x/y
> ip prefix-list prefer-link2 permit a.a.a.a/b
> ...
> ip community-list 11 permit myAS:1
> ip community-list 12 permit myAS:2
> ip community-list 13 permit myAS:3
> ip community-list 101 permit myAS:.
> ...
> !
> route-map mytuning permit 10
>   match prefix-list prefer-link1
>   set commu myAS:1
> !
> route-map mytuning permit 20
>   match prefix-list prefer-link2
>   set commu myAS:2
> !
> route-map mytuning permit 30
>   match prefix-list prefer-link3
>   set commu myAS:3
> !
> !(more as needed)
> !
> route-map mytuning permit 99
> !
> route-map link1-out permit 10
>   match commu 11
>   set metric 200
> !
> route-map link1-out permit 100
>   match commu 101
>   set metric 400
> !
> route-map link1-out permit 110
>   set metric 300
> !
> route-map link2-out permit 10
>   match commu 12
>   set metric 200
> !
> route-map link2-out permit 100
>   match commu 101
>   set metric 400
> !
> route-map link2-out permit 110
>   set metric 300
> !
>
> Then apply route-map linkX-out to neighbor X.
>
> All you need to do to tune is change the prefix-lists and soft-clear
> your sessions outbound.
>
> pt
>