Vlans up and down like yoyo's

[iMonkey]

Hello, ( I will warn you now I am new to Cisco equipment so please bare with me! )

I have tried to configure a 24 port 2950 Cisco switch today where by I wanted to split the 24 ports into 4 seperate Vlans.

I managed to create the vlans using conf t, int vlan 101 ... then assigned an IP address and then assigned a range of ports to that vlan.

Everything seemed to go OK until I done show ip int brief which revealed that one of the 3 vlans was down, in this case vlan 103. When I went to vlan 103's conf mode a done no shut vlan 103 came up buy shortly after vlan 104 went down, for some reason I cant get all 4 to work at the same time??

Do any of you know what I am doing wrong??

Thanks in advance,

iMonkey

 

[BuckWeet]

2950's are a layer 2 switch, the vlan interface is only really for management reasons, so therefore only 1 vlan will allowed to be up..

don't worry, you're not the first or last to get caught on this..


BuckWeet

 

[kittenhammer]

...Your VLANs will still function though.

 

[iMonkey]

Thank you for your replies, I did ended up working this out for myself which was a little bonus but thanks for pointing it out anyway!

I didn't occur to me to test whether router a could ping router b on the same vlan... but that is what I ended up doing after ages of staring at the IOS!!

I am told that CatOS is a lot less miss-leading than IOS on a switch!

(Cant wait to try CatOS out )

 

[BuckWeet]

Well you can't run CatOS on 35xx or 29xx only on the older 4000's and 6500's can you run CatOS, there is a mixed few EOL'ed switches as well.

BuckWeet