Would agree that volume is rare between 2xIP addresses but we have something
similair although on not quite the scale.
We NAT a very large organisation to the Internet. They have a large number
of disparate sites that all do their own AV updates. All the PCs download at
the same time in the evening and we generate about .75 Gb/s of traffic
between our external PAT address and the AV download site for a good couple
of hours. If we had a bigger internet pipe it would be a higher figure. (for
less time of course).
Dean
----- Original Message -----
From: "Rodney Dunn" <[email protected]>
To: "Mikael Abrahamsson" <[email protected]>
Cc: "Cisco" <[email protected]>
Sent: Wednesday, August 05, 2009 2:19 PM
Subject: Re: [c-nsp] multipath BGP not balancing equally.
For small flow combinations you are right. btw, it would be just L3
src/dst flows by default unless the L4 port option is enabled.
I thought about there being a single flow causing the difference that
would be hashing down one of the paths. But 2G, while not impossible,
typically isn't used between two ip addresses. It's something to check
though for sure.
Rodney
Mikael Abrahamsson wrote:
On Tue, 4 Aug 2009, Rodney Dunn wrote:
That's usually caused by routes not being the same on the paths.
It was my understanding that this usually was caused by not having enough
L4 flows to loadshare on...? Ie if you have 100 TCP flows and 4 paths,
then it's not enough flows to get good load share on, but if you instead
have 10k flows and all of them are low-speed, then the odds of them being
equally load shared is much better?
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