Sreesreeburla 
10 pts. | Mar 18 2010 4:28AM GMT
and also see there is one physical port is active in that vlan.
Q:
How do you get the VLAN protocol to go 'up'?
I've forgotten some information on VLAN protocols. I am butting my head against the wall right now trying to get the VLANs on my Cisco 2811 router to change to up/up from up/down. Does anyone know how to get the protocol of a VLAN to go “up”? I’m just plain forgetting it all right now.[o:p][/o:p]
ASKED:
Nov 17 2009 5:29 PM GMT
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A:
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As I can see, you've included the no shutdown command on both devices (router and switch) so your problem is only on protocols. Try this steps:
On your router, just issue the "no shutdown" command. Also Check if your subinterfaces are correctly configured.
Example configuration: Router
Router(config)#int fa0/1
Router(config-if)#no shutdown
Router(config-if)#exit
Router(config)#int fa0/1.X >>X is the VLAN ID configured on your switch
Router(config-subif)#encapsulation dot1Q X >>X is the VLAN ID configured on your switch
Router(config-subif)#ip address 192.168.X,X 255.255.X.X >>gateway for your VLAN
Router(config-subif)#exit
Router(config)#int fa0/1.XX >>another vlan
Router(config-subif)#encapsulation dot1Q XX >>another vlan
Router(config-subif)#ip address 192.168.X,X 255.255.X.X >>gateway for your other VLAN
Router(config-subif)#exit
Troubleshooting your switch:
*Check if the port connected to the router is configured as a trunk
*Check wether the configured vlan is in your vlan table
