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Community Member

VLAN status and protocol both are in down state

Hello Experts,
I am in process of configuring a new switch L3 cisco 4948 10ge model and run the following conmands:

Interface VLAN 100
IP address 1.1.1.1/24

Interface VLAN 200
IP address 2.2.2.2/24

Please note there is no interface assigned to the above VLANS and I have created a trunk port which is allowing both 100 and 200 VLAN traffic that port is connected with ESX server but the VLAN status and protocol both in down state. Please suggest what could be an issue?

Thanks

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Accepted Solutions
Purple

VLAN status and protocol both are in down state

Hi,

just configure the vlan on the switch so it is in the vlan database and then if STP is Forwarding for this vlan on the trunk your SVIs will come up.

Regards

Alain

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10 REPLIES
Purple

VLAN status and protocol both are in down state

Hi,

did you create the VLANS ? post  sh spanning-tree vlan 200 and sh spanning-tree vlan 100 output as well as sh int status

Regards

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.
Community Member

Re: VLAN status and protocol both are in down state

You meant to say VLAN database -NO. Can't we create VLANs by using interface command? Is there any difference in both VLAN database and interface command?
Thanks

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Purple

VLAN status and protocol both are in down state

Hi,

no, to create a VLAN you must either create it with the vlan command or if the switch is in VTP server or transparent mode by issuing the switchport access vlan x command under an interface.

Regards

Alain

Don't forget to rate helpful posts.

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Community Member

Re: VLAN status and protocol both are in down state

Hello there,
You need to have vlan and assign port to it, otherwise vlan will remain down.
Lek

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Community Member

Re: VLAN status and protocol both are in down state

There is VTP server configured in my scenario so I have to make VLANs by using VLAN command and after that the VLAN status will be up. Is it?

Please confirm.
Thanks

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Community Member

Re: VLAN status and protocol both are in down state

Hi Get,

I don't want to assign an interface to VLAN as I already stated in my question that the trunk port is created to allow both VLAN traffic. Won't this work?
Thanks

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Community Member

Re: VLAN status and protocol both are in down state

You can create vlan in server and assign port to it in switch. The switch port should be in UP state for vlan to come up.
Lek

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Purple

VLAN status and protocol both are in down state

Hi,

just configure the vlan on the switch so it is in the vlan database and then if STP is Forwarding for this vlan on the trunk your SVIs will come up.

Regards

Alain

Don't forget to rate helpful posts.

Don't forget to rate helpful posts.
Community Member

Re: VLAN status and protocol both are in down state

Thanks I will go with the suggestion and response you the status.


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Community Member

Re: VLAN status and protocol both are in down state

Creating the VLANS, resolved the issue. Thanks

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