How Can I Make My Vlan Up?

[YuanXu]

I added a Vlan to my 5509 Switch,
but the vlan status is always as "vlan is down, line protocol is down" ?
How can I do to make it up?

Thanks!

 

[wybnormal]

A VLAN interface is defaulted in the *down* condition. You need to go though the global config ( config t), then change to the vlan interface.. then type in *no shutdown* and it should come up assuming everything else is correct.

MikeS Find me at

http://www.packetattack.com

"The trouble with giving up civil rights is that you never get them back"

 

[YuanXu]

Thanks,
The vlan is "down", but not "administratively down", so I can not up it just by typing "no shut".

I think there must be some configuration mistake, but how can I discover it?

 

[YuanXu]

The vlan configuration is :
interface Vlan99
ip address 192.168.99.1 255.255.255.0
ip verify unicast reverse-path
no ip redirects
mls rp vtp-domain dm
mls rp ip

the result of "ping 192.168.99.1" is :
Success rate is 0 percent (0/5)

Can you tell me where the configuration mistake exist?

 

[PAGEME1000]

by all accounts you haven't configured a vlan yet....
What IOS are you using?
can you post you're full config to help?

 

[YuanXu]

Thanks for your help.
I made a stipud mistake.
I connected 10M port assigned to that vlan to a 100M port, so they can not connected, and the vlan can not "up". :-(

 

[wybnormal]

Ha!! dont think its all that stupid.. we ALL have done worse things ;-) At least you found it and corrected it.

Have fun!

MikeS Find me at

http://www.packetattack.com

"The trouble with giving up civil rights is that you never get them back"