From: Ludwig A. Morales (morales_l@xxxxxxxxxxx)
Date: Fri May 31 2002 - 01:44:40 GMT-3
Hi!
you should also punch a hole in one of your providers aggregate address out
to internet, and ask the other one to also advertise you network in order to
allow incoming traffic to take the best route to your AS.
Let me explain, assume that your first provider have assigned you
209.51.1.0/28 , you should ask your 2nd provider to announce this route out
of his AS to internet so that your network could be reach trough his
connection in case of your first provider link failure, now you solve one
problem but created another, probably your first provider will be
summarizing his network out to internet with 209.51.1.0/19 most router on
internet will see both /19 and /28 route and prefer the /28 route so they
would reach your network trough your second providers link (this can confuse
even some subscriber from your first provider) so you should ask your 1st
provider to also announce your /28 network (this is punching a hole, some of
them wont agree to do this).
you should also apply the proper policies in order to avoided becoming a
transit AS
Things would be much easier if you had a independent provider networks
address. one that does not belong to either provider.
I believe negotiating with your providers is harder then configuring BGP
attributes to manage your traffic once you get this.
Hope this helps
Regards,
Ludwig
----- Original Message -----
From: "elping" <elping@acedsl.com>
To: "Budiman Notorahardjo" <BudimanN@sg.fujitsu.com>
Cc: "Ccielab" <ccielab@groupstudy.com>
Sent: Thursday, May 30, 2002 11:42 PM
Subject: Re: Load Balancing of ISP Connection
> 1. Could we do load balancing for incoming traffic in this case?
>
> they will be asymetrical load balance for incoming traffic ....it will all
depend on
> how youe aspath looks to bgp neigborgs
>
> 2. Should my routers run BGP routing protocol for load balancing or
could my
> routers only use static default routes?
> bgp will give you control on how you will send traffic out in conjuction
with the default route pointing to your
> bgp routers.but outgoing traffic will also be asymetrical
> based on how your bgp learn the routes from your ISP
>
> static default routes to your isp will load balance depending on your
switching algorythm ....this method will
> give a better load balance ..
>
>
> Budiman Notorahardjo wrote:
>
> > Hi All,
> >
> > Please find the attached diagram
> >
> > Requirements:
> > 1. Load balancing incoming traffic to my network.
> > 2. My routers are connected to different routers on ISP to avoid
single
> > point of failure.
> >
> > Questions:
> > 1. Could we do load balancing for incoming traffic in this case?
> > 2. Should my routers run BGP routing protocol for load balancing or
could my
> > routers only use static default routes?
> >
> > Thanks,
> > Budiman
> >
> > [GroupStudy.com removed an attachment of type
application/x-zip-compressed which had a name of internet.zip]
This archive was generated by hypermail 2.1.4 : Thu Jun 13 2002 - 10:59:12 GMT-3