VLAN on a 2950

[ElCid]

I have created 6 VLAN's on this switch and assigned each VLAN interface an IP address.
ID NAME Status Ports
1 default active fa0/2, fa0/3,fa0/4
2 Subnet_2 active fa0/5, fa0/6
3 Subnet_3 active fa0/7, fa0/8
4 Subnet_4 active fa0/9, fa0/10
5 Subent_5 active fa0/11, fa0/12
6 Subnet_6 active fa0/13, fa0/15
I then configured trunking on port fa0/1. When I type the show int command, only the default VLAN is showing as up and the rest administratively down and the no shutdown command will not bring the interfaces up. When I connect a node to say fa0/5 the interface will change to up but the VLAN its assigned to remains administratively down. What am I doing wrong and how can I get the 6 VLAN's to communicate with each other. I know I have to use a router for the VLAN's to communicate but when I did that I couldn't ping the VLAN interfaces. Help please.

 

[fynx]

Might sound stoopid but,

Have you tried 'no shut' on the vlan interface or the ethernet interface?

switch# conf t
switch(config)# interface vlan 2
switch(config-if)# no shut
switch(config-if)# interface vlan 3
switch(config-if)# no shut

etc etc.

Cheers,
Phil. If everything is coming your way then you're in the wrong lane.

 

[krr]

Hmm, looks like some very basic misunderstanding.

The VLAN interfaces on a switch are for management access of this switch only. They have absolutely nothing to do with the communication between VLANs. You need routing for this, as you correctly pointed out.

When configuring a VLAN interface with an IP address you can e.g. telnet to the switch from this VLAN.

To make VLANs span multiple switches you use trunks between them. To make a port a member of a VLAN you say "switchport access vlan xxx".

If it helps, just consider the "interface vlan xxx" to be the management port connected to VLAN xxx. There can be several management ports - one in each defined VLAN.

Clear as mud?
Cheers, *Rob

 

[cao595812]

only one vlan is up when you assign ip address to every vlan even if you use the command "no shut".the vlan ip address only be used for management purpose.