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Scan network for vlan info.....how to

Scan network for vlan info.....how to

Jimmy2
New Contributor
Our network has grown, and through the year vlan standards have not always been consistent/followed. At our disposal are the standard tools (snmp, port scans, etc) and Ridgeline v4 and Epicenter.

Are there any tools any one knows of that can scan our network and query each sw for a list of vlans? We are talking over 10000+ switch (XOS, Extremeware, and 24/48si's)....so manually just wont work. I looked for a good length of time, unable to find a resolution online. I am not a SNMP guy (though we have one at work)...but I would also think that each sw could be queried this way as a last resort.

ty

1 ACCEPTED SOLUTION

dflouret
Extreme Employee
I forgot to mention that you can dig deeper into each of the devices and see the ports configured for each vlan...

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7 REPLIES 7

Jimmy2
New Contributor
Thank you both, will look into it  Think we will pursue first avenue.

Frank
Contributor
I once wrote a little script that snmp-scans my Extreme XOS switches (mostly to get a table displaying "port...vlantagged vlanuntagged" because nothing does that out of the box), and used these OIDs:

"vname" => ".1.3.6.1.4.1.1916.1.2.1.2.1.2", //extremeVlanIfDescr.vlan_no = string NOT the tag, though
"vport" => ".1.3.6.1.4.1.1916.1.4.17.1.1", //extremePortVlanInfoDescr.port.vlan_no = string
"vtag" => ".1.3.6.1.4.1.1916.1.2.1.2.1.10", //extremeVlanIfVlanId.vlan_no = integer
"tagged" => ".1.3.6.1.4.1.1916.1.2.6.1.1.1", //extremeVlanOpaqueTaggedPorts .VLANid.SLOT = Hex-String
"untagged" => ".1.3.6.1.4.1.1916.1.2.6.1.1.2" //extremeVlanOpaqueUntaggedPorts .VLANid.SLOT = Hex-String
Starting at "port" number 1000001 it actually lists pseudo-ports with vlan names and vlan descriptions (and Virtual Routers)

That might get you started - good luck!

Jeremy_Gibbs
Contributor
Use SNMP. Just figure out the mibs.
GTM-P2G8KFN