[76208] in North American Network Operators' Group
Load balancing outgoing connections automatically.
daemon@ATHENA.MIT.EDU (Drew Weaver)
Fri Dec 3 09:43:25 2004
Date: Fri, 3 Dec 2004 09:53:07 -0500
From: "Drew Weaver" <drew.weaver@thenap.com>
To: <nanog@merit.edu>
Errors-To: owner-nanog-outgoing@merit.edu
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Howdy. We're looking at upgrading our border router(s) from
7500s to (something) yet undetermined. What we would like to do is
perhaps find a platform that is smart enough to not route more outgoing
traffic across a circuit than it can handle. We have 4 outgoing links to
the net at the moment. They all have the same amount of bandwidth, BGP
tends to want to send all of the traffic out to the same two, so usually
those two will carry 80-90% of our traffic while the other two will
carry like 20-30% combined. So if the first two connections burst up a
little bit, sometimes it can cause congestion its fairly rare; but any
congestion is unacceptable as you all know.
=20
I know the way BGP works, it will use it rules to determine the way
traffic will go. I was wondering if anyone has heard of any good ways
to handle this becoming more well known within the last year or so I
researched this last year and found that prepending and doing things
manually is pretty much the only way to load balance it. (i.e. manually
setting routes based on the best paths through our upstreams for each
connected network) I really just want to tell my router to load balance
it; since that is kind of what I'm paying $100,000 for in the first
place, no? I've also heard of gear from companies like route science
that could possibly achieve the same thing. But I've heard that it runs
like $300,000 for a box, is there anything a bit smaller for companies
within the oc-3 range? That could accompany my router?
=20
Any advice is greatly appreciated.
=20
Thanks,
-Drew
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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'> =
Howdy. We’re looking at upgrading our
border router(s) from 7500s to (something) yet undetermined. What we =
would like
to do is perhaps find a platform that is smart enough to not route more
outgoing traffic across a circuit than it can handle. We have 4 outgoing =
links
to the net at the moment. They all have the same amount of bandwidth, =
BGP tends
to want to send all of the traffic out to the same two, so usually those =
two
will carry 80-90% of our traffic while the other two will carry like =
20-30%
combined. So if the first two connections burst up a little bit, =
sometimes it
can cause congestion its fairly rare; but any congestion is unacceptable =
as you
all know.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal style=3D'text-indent:.5in'><font size=3D2 =
face=3DArial><span
style=3D'font-size:10.0pt;font-family:Arial'> I know the way BGP =
works, it will
use it rules to determine the way traffic will go. I was wondering =
if anyone
has heard of any good ways to handle this becoming more well known =
within the
last year or so I researched this last year and found that prepending =
and doing
things manually is pretty much the only way to load balance it. (i.e. =
manually
setting routes based on the best paths through our upstreams for each =
connected
network) I really just want to tell my router to load balance it; since =
that is
kind of what I’m paying $100,000 for in the first place, no? =
I’ve
also heard of gear from companies like route science that could possibly
achieve the same thing. But I’ve heard that it runs like $300,000 =
for a
box, is there anything a bit smaller for companies within the oc-3 =
range? That could
accompany my router?<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Any advice is greatly =
appreciated.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thanks,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>-Drew<o:p></o:p></span></font></p>
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