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Ignitionnet · 08-01-2010, 09:52

Oversubscription and 'high usage' are quite different things really.

It may have not many customers on it but they may be quite heavy users causing congestion. All cable networks are oversubscribed, far more bandwidth sold than they could possibly support if everyone saturated their connections at once, the key is how much oversubscription is done and if it affects service. This can be a very different figure between different areas, I've seen some areas that have problems with less than a quarter the number of active modems in others.

VM monitor usage quite thoroughly, the issue is really the guidelines they have for when they upgrade.

They have graphs of utilisation every 5 minutes for the previous 24 hours, and % of time a port is above 80, 90 and 99% for the previous week.

Oversubscribed is just a handy term to use for when a port is congested / experiencing 'high usage'. It may not actually be excessively oversubscribed it may just be heavily utilised by the existing customers relative to the number of subscribers using it.

That a port is being monitored and will be passed to planning if the issue persists is a standard reply which has been used for a while so no real 'progress' there it's part of what the 2nd line tech support guys do.

HTH.

08-01-2010, 09:52	#8
Ignitionnet Inactive Join Date: Jun 2008 Location: Leeds, West Yorkshire Age: 47 Posts: 13,995	Re: 20MB problems Oversubscription and 'high usage' are quite different things really. It may have not many customers on it but they may be quite heavy users causing congestion. All cable networks are oversubscribed, far more bandwidth sold than they could possibly support if everyone saturated their connections at once, the key is how much oversubscription is done and if it affects service. This can be a very different figure between different areas, I've seen some areas that have problems with less than a quarter the number of active modems in others. VM monitor usage quite thoroughly, the issue is really the guidelines they have for when they upgrade. They have graphs of utilisation every 5 minutes for the previous 24 hours, and % of time a port is above 80, 90 and 99% for the previous week. Oversubscribed is just a handy term to use for when a port is congested / experiencing 'high usage'. It may not actually be excessively oversubscribed it may just be heavily utilised by the existing customers relative to the number of subscribers using it. That a port is being monitored and will be passed to planning if the issue persists is a standard reply which has been used for a while so no real 'progress' there it's part of what the 2nd line tech support guys do. HTH.