catalyst 2950 help

Ricardo · Post by **Ricardo** » Fri Aug 04, 2006 5:51 pm

I have a problem I am observing a switch catalyst 2950 and graph all the ports except vlan2 and vlan3 that it will be
thank you

elnino · Post by **elnino** » Thu Aug 10, 2006 8:39 am

Cacti will only graph the actual ports, not the virtual interfaces like a loopback or a vlan interface

cksrealm · Post by **cksrealm** » Mon Aug 14, 2006 2:56 am

I have to say that I do not agree with that statement I am running Cacti monitoring 24 switches and its plotting graphs for over 48 vlan interfaces as well without any issues. Running Version 0.8.6h

ddonohue · Post by **ddonohue** » Mon Aug 14, 2006 10:14 am

i'm able to graph Port channels, off of my 6509's, but i'm not able to graph VLAN's, however i'd like to be able too.

elnino · Post by **elnino** » Mon Aug 14, 2006 12:51 pm

cksrealm wrote:I have to say that I do not agree with that statement I am running Cacti monitoring 24 switches and its plotting graphs for over 48 vlan interfaces as well without any issues. Running Version 0.8.6h

Guess you're right. I'm almost positive I tried this in the past and it didn't work. I tried it on a few of our 2950's just to be sure, and it is graphing the VLAN interfaces.

Correct me if I'm wrong, but I think the only traffic reflected on a layer-2 switch for the VLAN interface is traffic going to just that management IP address such as a monitoring server that would ping the switch every few minutes. With a layer 3 switch like the 6509 it might graph more traffic for routing, etc.

ddonohue · Post by **ddonohue** » Mon Aug 14, 2006 2:34 pm

i was looking for it to graph, the full subnet, b/c we have our vlans's setup to be full user segrations and such..blah blah blah. IE, i wanted to be able to see which VLAN was sucking up the most bandwidth.

Donohue

rickstewart · Post by **rickstewart** » Mon Aug 14, 2006 3:20 pm

I have a 2950 and I found that if the Vlan has an ip it will be graphed, if it doesnt. No graph. I culd be wrong but this is what I have found in my current setup.

ddonohue · Post by **ddonohue** » Mon Aug 14, 2006 4:19 pm

my 3750's, that have L3 VLAN, ie, IP addy's can be graphed, my graphs for the 6509's don't, for the same type of L3 Interfaces....of course, that might have something to do w/ the whole GLBP setup and such that we have here.

Donohue

elnino · Post by **elnino** » Mon Aug 14, 2006 7:28 pm

If you want to compair traffic per vlan for a switch, you'll probably have to make a custom graph that stacks the sources the inbound and outbound for ports on a certain vlan.

iznogud · Post by **iznogud** » Fri Nov 30, 2007 1:13 am

Hi all! Could I revive this thread?

I have a following problem graphing vlan traffic:

I am transferring vlan traffic through my network. More specifically, I have two vlans that span across my network via trunked interfaces that have limited vlans allowed to pass through. I haven't got separate interface for either vlan. I can graph trunk traffic but I can't graph vlan interface.
My cacti's version is 0.8.6j on the slack box, and I have several cisco snmp enabled devices across my network - 2950 and 3750 switches from where I pull snmp info. I tried adding an ip address onto the vlan interface, but it didn't help.

Could anyone please give me some pointers how to do this?

catalyst 2950 help

catalyst 2950 help

I can graph trunk traffic but I can't graph vlan interface.

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