VLAN interfaces will not come up

[scottcummins]

       I am using an Old 3500 XL and I simply created a

interface VLAN 100

Description ***********

ip address 10.0.1.100  255.255.255.248

no ip directed-broadcast

no ip route-cache

shutdown

no matter what I do i cannot get it to come up,

the rest of the switch is default config, I know I am just forgetting something, But I don't know what?

[Peter Paluch]

Hello Scott,

In order for interface Vlan 100 to come up, you must

1. Create the VLAN 100 beforehand (note that "VLAN 100" and "interface Vlan 100" are not the same things)
2. Have at least one physical port, either access or trunk, on which the VLAN 100 is allowed and the port is up/up and is in STP Forwarding mode

Please check if these requirements are met. Thank you!

Best regards,

Peter

[glen.grant]

On those old switches you have to create the L2 vlan in the vlan database.At the command line type

"vlan database",  then type vlan X where X = the vlan you want to  create , then type exit.   Also rememberyou cannot route on these  switches so the only thing the SVI is used for is to manage the switch  thus only a single SVI can be up at a time  so if you need  vlan 100 up to manage the switch then you must shutdown Vlan 1  because you can only have a single SVI active.

[scottcummins]

Hello Peter and Glen again

Yes, I did and i see VLAN 100 in my VLAN database, i also configured port 22 for VLAN 100 access and it says up/up. My VLAN 100 says admin down/Line down

[Gregory Snipes]

Admin down means that it is shutdown, you have issued a no shut on this, correct?

[glen.grant · Accepted solution]

  You must shutdown the interface vlan 1 interface then no shut vlan 100 .

[Gregory Snipes]

Good point, I forgot in the old XL series switches you could only have one active at a time.

[scottcummins]

DUH!! Yes, I forgot about that, Thanks Glen, I hate to have to use these old ones, But it is all I have.

[metelcomag]

Hi

I had once same problem. I configured a switchport with the same vlan as access and patched it. After the link comes up also the vlan interface comes up

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