Vlan traffic graph

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stellina
Posts: 3
Joined: Tue Nov 25, 2008 7:04 am
Location: Athens

Vlan traffic graph

Post by stellina »

Hi,

I would like to have a graph displaying the input/output traffice inside a vlan. I have added such a graph for interface vlan xx but the values are not the expected ones (I get max 0.5kbits/sec). The device is a cisco 3750g switch. How can I fix this?

thank you
borja.arranz
Posts: 9
Joined: Fri Feb 06, 2009 7:37 am

Re: Vlan traffic graph

Post by borja.arranz »

stellina wrote:Hi,

I would like to have a graph displaying the input/output traffice inside a vlan. I have added such a graph for interface vlan xx but the values are not the expected ones (I get max 0.5kbits/sec). The device is a cisco 3750g switch. How can I fix this?

thank you
I have the same problem, did can you fix that?
aleu
Cacti User
Posts: 216
Joined: Mon Dec 11, 2006 10:17 am

Re: Vlan traffic graph

Post by aleu »

stellina wrote:Hi,

I would like to have a graph displaying the input/output traffice inside a vlan. I have added such a graph for interface vlan xx but the values are not the expected ones (I get max 0.5kbits/sec). The device is a cisco 3750g switch. How can I fix this?
thank you
What is it that you are trying to graph? The overall traffic on a given VLAN? If so, I do not think you will be able to do it as this information is not being exposed via SNMP, but for performance reasons it is taking place on the ASIC level. Read more about CEF. The 0.5kbps that you are seeing is simply the management traffic.
borja.arranz
Posts: 9
Joined: Fri Feb 06, 2009 7:37 am

Re: Vlan traffic graph

Post by borja.arranz »

aleu wrote:
stellina wrote:Hi,

I would like to have a graph displaying the input/output traffice inside a vlan. I have added such a graph for interface vlan xx but the values are not the expected ones (I get max 0.5kbits/sec). The device is a cisco 3750g switch. How can I fix this?
thank you
What is it that you are trying to graph? The overall traffic on a given VLAN? If so, I do not think you will be able to do it as this information is not being exposed via SNMP, but for performance reasons it is taking place on the ASIC level. Read more about CEF. The 0.5kbps that you are seeing is simply the management traffic.
My problem, and i think is the same that the person who open this topic, is that i want to know the entire traffic of a Vlan, that only use a client. I have a results that can't be the real. You said that tha traffic that Cacti take is the management traffic of the Vlan, how can i configure Cacti to measure all the traffic in the Vlan?

Thanks
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