VLAN port with internet access can access only one vlan?

Guest

I've been searching around for a while and have come up with more
questions than answers

I have two cisco switches (2950 and 3500) which are connected to
eachother with a vlan 1 (default) and vlan 22.

The vlan aspect is working fine as it should be, each switch is
basically divied in half w/ half the ports on vlan 22 and half on vlan
1. I have them trunked together and that works fine.

Now on one switch I have my internet connection on a port.

If I set the port to access mode and put in vlan 22 then vlan 22 has an
internet connection
If I put in vlan 1 then vlan 1 has the internet connection

It will not let me put in vlan 1 & 22 at the same time!
I have seen things such as ip-helper, which I don't think is a problem,
apparently each machine is getting an ip address from the dhcp server
(the router).

Also I'm confused to as why a VLAN would have an IP address at all...
what is the purpose? An example please? =)

Here's the configuration file with the switch with internet connection
port:

ip subnet-zero
no ip domain-lookup
ip dhcp-server 192.168.2.1
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
interface FastEthernet0/1
no ip address
no cdp enable
!
interface FastEthernet0/2
switchport access vlan 22
no ip address
no cdp enable
!
interface FastEthernet0/3
no ip address
no cdp enable
!
interface FastEthernet0/4
no ip address
no cdp enable
!
interface FastEthernet0/5
no ip address
no cdp enable
!
interface FastEthernet0/6
no ip address
no cdp enable
!
interface FastEthernet0/7
no ip address
no cdp enable
!
interface FastEthernet0/8
no ip address
no cdp enable
!
interface FastEthernet0/9
no ip address
no cdp enable
!
interface FastEthernet0/10
no ip address
no cdp enable
!
interface FastEthernet0/11
switchport access vlan 22
switchport mode trunk
no ip address
speed 100
no cdp enable
!
interface FastEthernet0/12 --- Internet Connection in this port
switchport mode access
no ip address
no cdp enable
!
interface Vlan1
no ip address
no ip route-cache
shutdown
!
interface Vlan22
ip address 192.168.2.3 255.255.255.0
no ip route-cache
!
ip http server
!
no cdp run
!
line con 0
!
end

Mark Williams · Guest

In order to forward traffic between VLANs, you need something to
perfrom routing. The 3500 is a multilayer switch, right? You will need
to configure vlan interfaces and routing on the 3500 to support
communication between vlans 1 and 22.

You may also need some form of NAT as well.

java321 · Guest

You need a L3 device to router traffic from both vlan 1 and vlan 22. Here
are some suggestions:
1) connect vlan 1 and 22 to different ports on the router (e.g. vlan 1 <->
fa0/0 and vlan 22 <-> fa0/1)
2)create a trunk port between router and the switch (define fastethernet
subinterfaces)
3) create layer 3 interfaces for vlan1 and 22 on the switch.

Good luck