vlans on a Catalyst 4006

[tjkenobi]

I have 3 vlans setup on a 4006 switch, how can I allow some ports to be open to two of the three vlans?

 

[BuckWeet]

As in how are you perceiving this to work?

Its possible to do what you want but doing an auxillaryvlan or by doing a trunk...


BuckWeet

 

[tjkenobi]

I tried trunking but that didn't seem to work. I did a sh trunk and the native vlan seemed to take precedence over the trunk.

In otherwords, I had port 2/4 part of vlan 2 to begin with, then trunked it allowing all three vlans, 1,2,3 the only vlan that had access to port 2/4 was vlan 2. Vlan 1 and 3 could not access port 2/4.

I started with port 2/4 in vlan 2
the command I gave the switch was:
"set trunk 2/4 on 1-3"

I did a "sh trunk" and port 2/4 showed up as:
Port Mode Encapsulation Status Native vlan
"2/4 on dot1q trunking 2"

Am I doing something wrong here?

 

[IPKONFIG]

For what you have configured, your doing nothing wrong.

But if your wanting your computer connected to port 2/4 to communicate across all 3 vlans, it's not going to happen. You need a router to communicate between vlans.

"I can picture a world without war. A world without hate. A world without fear. And I can picture us attacking that world, because they'd never expect it."
- Jack Handey, Deep Thoughts

 

[gaveeve]

Do you have a supervisor module on this 4006 switch? You may already know this but do a show module.

 

[tjkenobi]

Yes I have a supervisor module in the switch and two 48 port 10/100 blades.

 

[MJewell]

Unless you have a L3 card in the switch your going to need a seperate router for the 4006's, there are 2 options for the 4006's for router modules:

L3 Router w/ 32 Port 10/100 Copper (WS-X4232-L3)
Sup III Module (WS-X4014)

Or, connecting to a 6500 Series with MSFC2 cards installed as your routers...

-Mike

 

[TechTryer]

Vlans are used to prevent them taking to each other to reduce the boradcast domain so that the network as a whole performs better ------ correct?

So if u want only certain Vlans to communicate, u need to perform InterVlan Routing.

This requires a L3 device with Routing Capabilities.
Route or a Layer 3 switch - like a Catalyst 3550 or a Layer 3 card

Cheers



TechTryer
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