LMS 3.1: Any way to find all switches in a VLAN?

Answered Question
Aug 11th, 2009

Say I have a VLAN and a gateway IP address to it. Does CiscoWorks have an easy way to find all the switches with that VLAN trunked to them?

I am thinking of writing a script using SNMP to follow CDP neighbors and VLAN members. That should not be too hard to write but I don't want to reinvent the wheel if LMS already does that.

Thanks and regards,

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Wei

I have this problem too.
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Correct Answer by Joe Clarke about 7 years 4 months ago

I assume you mean work WITHOUT a VTP domain. The answer is yes. For example, select the LAN Edge View, then drill into a switch cloud, and you can display the STP data. As long as you have VLANs, you can do STP visualization.

Correct Answer by Joe Clarke about 7 years 4 months ago

Not directly. Campus offers a VLAN report which will show you what VLANs are available in a given VTP domain or on a given device, but to get a list of devices in a VLAN, you can go to Topology Services, expand Managed Domains, expand your desired VTP domain, expand the VLAN, then export the list of devices and ports in that VLAN.

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Correct Answer
Joe Clarke Tue, 08/11/2009 - 07:17

Not directly. Campus offers a VLAN report which will show you what VLANs are available in a given VTP domain or on a given device, but to get a list of devices in a VLAN, you can go to Topology Services, expand Managed Domains, expand your desired VTP domain, expand the VLAN, then export the list of devices and ports in that VLAN.

ww9rivers Tue, 08/11/2009 - 08:07

Thanks, Joe.

I have tried the Topology Services before posting the question but I did not find a way to filter out the VLAN I want after getting to the VTP topology map.

Now I have a different question: VTP is not being used to create/define VLANs here in our network and that is not likely to change. Does the Topology Filter >> Spanning Tree >> VLAN function still work reliably with a VTP Domain Topology map?

Again, thanks and regards.

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Wei

Correct Answer
Joe Clarke Tue, 08/11/2009 - 08:19

I assume you mean work WITHOUT a VTP domain. The answer is yes. For example, select the LAN Edge View, then drill into a switch cloud, and you can display the STP data. As long as you have VLANs, you can do STP visualization.

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