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RE: Extreme congestion (was Re: inter-domain link recovery)
On Thu, 16 Aug 2007, michael.dillon@xxxxxx wrote:
How many people have noticed that when you replace a circuit with a higher capacity one, the traffic on the new circuit is suddenly greater than 100% of the old one. Obviously this doesn't happen all the time, such as when you have a 40% threshold for initiating a circuit upgrade, but if you do your upgrades when they are 80% or 90% full, this does happen.
I'd say this might happen on links connected to devices with small buffers such as with a 7600 with lan cards, foundry device or alike. If you look at the same behaviour of a deep packet buffer device such as juniper or cisco GSR/CRS-1 the behaviour you're describing doesn't exist (at least not that I have noticed).
-- Mikael Abrahamsson email: swmike@xxxxxxxxx