Unanswered Question
Aug 25th, 2007
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I have three higher end switch and connected like these

Switch 1 ( VTP server ) -Switch 2 Client-Switch 3 client.

Now i want to create vlan 100 in Switch 1, which is broadcast in swtich 2&3.

My question

1) I want to add port 0/2 of Switch 2 and Port 0/2 of Switch 3 in Vlan 100. Can it possible ? 2) what out put i am getting in show vlan brief in all the vlan.



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Mohamed Sobair Sat, 08/25/2007 - 03:38
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1st, All you have to do is to make sure all switches are connected via trunk ports.

2nd, assigning the vlan to the port is simply by issuing the following:


int f0/2

switch port access vlan 100


int f0/2

switch port access vlan 100

The Sh vlan br command, will show you which ports assigned for which vlans along with its naming and the Activity status.

vinodbharwani Sat, 08/25/2007 - 04:27
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Hi msobier123

My question is if both port are f0/2 in different switc?

show vlan brief

vlan 100 - F0/2 F0/2

How can this possible ? please clarify

Mohamed Sobair Sat, 08/25/2007 - 05:00
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Hi Vinod,

If you issue this command (sh vlan br), it will show you the ports those parts of the active vlan on the same switch.

for example:

you configured vlan 100 on SW2, and assigned port 3,3 respectively to the same vlan..

when issuing (sh vlan br) the out put will be:

vlan 100 active f0/2 , f0/3

the above output implies the status of SW2 and has nothing to do with SW3.


Mohamed Sobair

Pavel Bykov Sat, 08/25/2007 - 09:16
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VLANs in same VTP domains are interconnected using TRUNKS.

If you have same VTP domain (which you have, since you have working VTP) then:

VLAN #2 on one switch will be interconnected with VLAN 2 on other switches!

They are interconnected using Spanning Tree Protocol.


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