VLAN config problem

m0rpheus

Hey guys, I've been trying to figure this out for the past 6 hours. I've read everything that I could possibly find and still cannot resolve the issue. Basically, I am trying to create a simple inter-vlan lab using dot1q:

..............R2610
..................|
..................|
............SW2912
.........(10.0.11.1 - VLAN1 - native)
........./..............\
......./..................\
Host A...............Host B
(10.1.22.3).....(10.1.33.3)
VLAN2................VLAN3

The problem is that neither of the hosts can ping the switch. As you can see from the output below both VLAN2 and VLAN3 are show as ADMINISTRATIVELY DOWN.


VLAN1 10.1.11.1 YES NVRAM up up

VLAN2 10.1.22.1 YES manual administratively down down

VLAN3 10.1.33.1 YES manual administratively down down

FastEthernet0/1 unassigned YES unset up up

FastEthernet0/2 unassigned YES unset down down

FastEthernet0/3 unassigned YES unset up up

FastEthernet0/4 unassigned YES unset down down

FastEthernet0/5 unassigned YES unset up up
.....

And sh run:

...
interface FastEthernet0/1
description To Vlan 2
switchport access vlan 2
!
interface FastEthernet0/2
!
interface FastEthernet0/3
description To Vlan 3
switchport access vlan 3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
description Trunk to Router
switchport trunk encapsulation dot1q
switchport mode trunk
!
......

!
interface VLAN1
description Management VLAN
ip address 10.1.11.1 255.255.255.0
no ip directed-broadcast
no ip route-cache
!
interface VLAN2
ip address 10.1.22.1 255.255.255.0
no ip directed-broadcast
no ip route-cache
shutdown
!
interface VLAN3
ip address 10.1.33.1 255.255.255.0
no ip directed-broadcast
no ip route-cache
shutdown

Any ideas would be greatly appreciated.

tech-airman

m0rpheus wrote:

Hey guys, I've been trying to figure this out for the past 6 hours. I've read everything that I could possibly find and still cannot resolve the issue. Basically, I am trying to create a simple inter-vlan lab using dot1q:

..............R2610
..................|
..................|
............SW2912
.........(10.0.11.1 - VLAN1 - native)
........./..............\
......./..................\
Host A...............Host B
(10.1.22.3).....(10.1.33.3)
VLAN2................VLAN3

The problem is that neither of the hosts can ping the switch. As you can see from the output below both VLAN2 and VLAN3 are show as ADMINISTRATIVELY DOWN.


VLAN1 10.1.11.1 YES NVRAM up up

VLAN2 10.1.22.1 YES manual administratively down down

VLAN3 10.1.33.1 YES manual administratively down down

FastEthernet0/1 unassigned YES unset up up

FastEthernet0/2 unassigned YES unset down down

FastEthernet0/3 unassigned YES unset up up

FastEthernet0/4 unassigned YES unset down down

FastEthernet0/5 unassigned YES unset up up
.....

And sh run:

...
interface FastEthernet0/1
description To Vlan 2
switchport access vlan 2
!
interface FastEthernet0/2
!
interface FastEthernet0/3
description To Vlan 3
switchport access vlan 3
!
interface FastEthernet0/4
!
interface FastEthernet0/5
description Trunk to Router
switchport trunk encapsulation dot1q
switchport mode trunk
!
......

!
interface VLAN1
description Management VLAN
ip address 10.1.11.1 255.255.255.0
no ip directed-broadcast
no ip route-cache
!
interface VLAN2
ip address 10.1.22.1 255.255.255.0
no ip directed-broadcast
no ip route-cache
shutdown
!
interface VLAN3
ip address 10.1.33.1 255.255.255.0
no ip directed-broadcast
no ip route-cache
shutdown

Any ideas would be greatly appreciated.

m0rpheus,

Can you ping from the R2610 to the SW2912?

m0rpheus

Yes, I can.

tech-airman

m0rpheus wrote:

Yes, I can.

m0rpheus,

Can you ping from the R2610 to 10.1.22.1?

m0rpheus

Yep, I can ping to 22.1 and 33.1.

tech-airman

m0rpheus wrote:

Yep, I can ping to 22.1 and 33.1.

m0rpheus,

How come VLAN 2 and VLAN 3 are "administratively down down?"

m0rpheus

Tech-airman, this is exactly my question. Here is a sh ip interfaces brief:


VLAN1 10.1.11.1 YES NVRAM up up

VLAN2 10.1.22.1 YES manual administratively down down

VLAN3 10.1.33.1 YES manual administratively down down

FastEthernet0/1 unassigned YES unset up up

FastEthernet0/2 unassigned YES unset down down

FastEthernet0/3 unassigned YES unset up up

FastEthernet0/4 unassigned YES unset down down

FastEthernet0/5 unassigned YES unset up up

networker050184

Do a no shut on the VLAN interfaces that are administrativley down..

dtlokee

On the 2950 you can only have one SVI up at a time. The VLAN interfaces are there for administration, things like telnetting to the switch and copying IOS files. Only one can be up at a time, if you no shut one, the current one will shutdown. On a L3 switch you can have many of them up at the same time, not on the L2 switch, it's not a router.

m0rpheus

Thanks, dtlokee. I finally got it to work. I was just confused about why these interfaces show as "administratively down".