when i creat a vlan on 2900 series cisco switch it automatically shutdown the rest of vlan what is problem?

Question

when i creat a vlan on 2900 series cisco switch it automatically shutdown the rest of vlan what is problem?

Answer 1

Did you specify the ports you want to be part of the VLAN? If not you have to take care of that. Another thing that will make the VLANs to Communicate with each other is that you need a Router.

Answer 2

When you say that you are creating a VLAN, what is the actual process you are going through? Depending on the model, there are at least two methods for creating a VLAN - through the configuration mode, and through the database - the former is the current method, the latter has been deprecated, but still required on older gear.



IOS Configuration mode VLAN creation:

switch# conf t

switch#(conf) vlan 3

switch#(conf-vlan) name

ctrl-z



Database method:

switch# vlan database

vlan 3

name

exit



This is the only way to "create" a VLAN. Many people confuse creating a SVI (Switched Virtual Interface) with creating a VLAN. Creating an SVI is when you create a VLAN Interface on the switch. If you try and create an SVI without a corresponding vlan already being created (by methods above) you could easily get into trouble. Different code levels will behave differently in my experience.



Also, if you have created a VLAN (say VLAN 3) and are now trying to get an up/up on your SVI for VLAN 3, then you must put ports - physical ports, into VLAN 3. Hope this helps.

Answer 3

The normal way i go about putting lets say 2 ports into teh same vlan so 2 machines can talk to eachother but nothing else would be



conf t

vlan 10

name Blaa



int gig 0/5

switchport mode access

switchport access vlan 10

no shutdown



int gig 0/6

switchport mode access

switchport access vlan 10

no shutdown



exit

exit





Hope this helps?