[c-nsp] Traffic Engineering Internet links automatically

[Kim Onnel]

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 ?

On 3/27/06, Gert Doering <gert at greenie.muc.de> wrote:
>
> Hi,
>
> On Mon, Mar 27, 2006 at 01:33:25PM +0200, Kim Onnel wrote:
> > > On Mon, Mar 27, 2006 at 12:11:39PM +0200, Sami Joseph wrote:
> > > > What does ISPs do in this situation, do you guys just manually keep
> > > > moving/advertising networks between diff. peers ?
> > > We get bandwidth in sufficiently large chunks...
> >
> > You mean that you have enough that you dont need to keep moving ?
>
> Yes.  Dedicating vast amounts of engineer time to work on "perfect" load
> balancing can easily get much more expensive than getting a bigger pipe.
>
> (It all depends on circumstances, of course.  In Germany, uplink bandwidth
> is fairly cheap these days, and if you're located in the right places,
> it's just a matter of throwing a fiber link across the building, and
> getting a GigE uplink port with some 100 Mbit/s. of "committed" bandwidth)
>
> > (And in certain cases we move around traffic to/from certain remote ASes
> > > by prepending inbound and using communities/prepends outbound)
> >
> > Well, in our case, we want to tailor it to do the maximum utilization
> > possible, so any few megabits is useful, i dont think that prepending
> and
> > communities are the way ?
> >
> > Any known methods ?
> > Is OER used for this ?
>
> OER will do for outgoing traffic.
>
> For incoming traffic, you'll have to live with what BGP can give you -
> prepending, communities (to have your upstream prepend to certain peer
> ASes of this upstream), etc.
>
> gert
> --
> USENET is *not* the non-clickable part of WWW!
>
> //www.muc.de/~gert/
> Gert Doering - Munich, Germany
> gert at greenie.muc.de
> fax: +49-89-35655025
> gert at net.informatik.tu-muenchen.de
>