The list server appears to have butchered the beginning of this one - let's try again and see if it makes more sense when the whole message is included. Reading: congestion on WAN clouds can be amplified if packets / cells are dropped/refused entry because of congestion on the cloud. This in turn leads to the retransmission of dropped packets/cells, which in turn leads to more congestion, in a never ending spiral ( in theory, at least ) Reality: This gets into sizing of WAN links / CIR's / CBR's I am a bit curious. Anyone here have any real world experience with this kind of thing happening? I can see how this can happen in theory. In reality, carrier cloud congestion is not such that it would likely lead to this kind of result, is it? So if the above premise is something that can and does happen regularly, what does the carrier do - just massive dropping of packets / cells until the problem disappears, probably after hours that day? Any experience? Chuck One IOS to forward them all. One IOS to find them. One IOS to summarize them all And in the routing table bind them. -JRR Chambers- Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=2625&t=2625 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]