Hi,

I am starting to offer dedicated hosting, and I wanted to put some packages together, but how do you guys meter bandwidth to make sure users don't go over say their 20 GB limit?

Thanks

EDIT:

Misread your post.

You could use MRTG.

MRTG with 95th percentile billing is a good way, since that is probably how you are billed.

Get MRTG (http://www.mrtg.org) and Sean Adam's MRTG 95th percentile hack (http://www.seanadams.com/95/).

We have colo with dialtone and use a cisco switch to monitor bandwith with MRTG + the 95th percentile hack..

works like a charm.

And how do you LIMIT bandwith?

My bandwith is 100 Mb/sec burstable, but a customer wants fixed bandwith, non-burstable. How can I limit the speed of his port to, say, 512 Kbit/sec ?

I checked the available commands on my cisco switch, but can't find this feature...

Anyone who knows how to do this?

We use Cisco 2900 switches which also have the ability to throttle bandwidth... We usually simply allow 100Mbit and have mrtg running with scripts that check everymonth for overages.

Originally posted by bizness
We use Cisco 2900 switches which also have the ability to throttle bandwidth... We usually simply allow 100Mbit and have mrtg running with scripts that check everymonth for overages.

Can you give me the cisco command for this?

In the univercd, in the command reference for the 2900 catalyst swith, I found the "set port speed" command, but this only allows to choose between 10/100/auto, which is not what I want.

I can't find any other command that can do what I'm looking for.

Someone told me there is (at the moment) only one switch that can set a port-based bandwith limit: the Allied Telesyn Rapier 24i. Any experience with this high-end layer 3 switch?

If anyone knows, is the Enhanced version the image you need for capping?

in the cisco 2900...

go to the interface needed unde configure.

configure
interface FastEthernet 0/6
bandiwdth "kilobyts here"

As far as I know: the "bandwith" command is only recognized on cisco routers and not on their switches.

And secondly: the bandwith command doesn't impose a hardware-based limitation on the port. It only influences routing decisions. With some routing protocols, the routing software calculates the cost of a route/path based on the bandwith of the lines in between. Since some interfaces cannot tell the exact bandwith to the routing software (eg. serial interface), cisco introduced the bandwith command, to provide this information.

But it doesn't impose a hardware limit and only helps with routing decisions, that's why this command is not available on switches...

Please correct me if I'm wrong...

Originally posted by bizness
in the cisco 2900...

go to the interface needed unde configure.

configure
interface FastEthernet 0/6
bandiwdth "kilobyts here"

rootservices:

You're very correct, I couldn't sound as smart as you so I didn't say anything. :)

Foundry switches are very nice too.

The cisco 2900 are access layer switches, and you cannot do what you are asking for, especially not in 512k blocks. If you are connecting it directly to an core switch with QOS like Extreme Alpine 3804/3808, BigIron 4000 then you can do the port limiting.

Saying that I think the EN/EE series may/do allow hardware port limiting. but dont quote me on it..