How to monitor bandwidth of vlan on switch

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Jan 20th, 2011
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Hi all,

I need your help to monitor or to see the bandwidth of vlan on switch, I read that this process is with VLAN access maps but I don’t know how.

Could you give me one example of configuration?

Thanks in advance

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sean_evershed Thu, 01/20/2011 - 18:49
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How is your network monitoring tool configured? Do you want to a span port to direct traffic to this device for analysis?

If so see below an example config for a 6500

A simpler alternative is to use SNMP polling to monitor bandwidth consumption on a VLAN interface.

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jprodrig01 Thu, 01/20/2011 - 20:35
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Mi network topology is attached , I don`t have vlan port only two trunks ports, about 30 vlans in this moment, and I need the input rate and output rate of each vlan on the trunks.

thanks for your help

sean_evershed Fri, 01/21/2011 - 01:13
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Do the VLANs only exist on the VMWare Server?

Assuming your 4500 switch has the capability I would suggest configuring Netflow.

This will allow you to graph bandwidth utilization for source and destination IP addresses.

jprodrig01 Fri, 01/21/2011 - 07:57
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yes the VLANs only exist on the VMWare Server, Im going to try to configure netflow  I don´t know if switch has the capability.

sean_evershed Fri, 01/21/2011 - 16:25
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If not the 4500 then also check your router to see if it supports Netflow.


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