how can connect a switch to the router with different ip using vlans ???

[almir fiorio]

Dear Friends

im have a router cisco model 7200 in ip 10.132.1.6 and a switch model 2960 in ip 10.132.1.53

im want to put a ip 10.135.50.3 in switch to create a new network and separate the network traffic

how im can put this??? im do this configuration bellow but not works,

***** in router

interface GigabitEthernet0/3

bandwidth 1000000

ip access-group 100 in

duplex auto

speed auto

media-type rj45

negotiation auto

no keepalive

interface GigabitEthernet0/3.50

encapsulation dot1Q 50

ip address 10.135.50.1 255.255.255.0

ip access-group 100 in

ip helper-address 10.132.5.81

***** in switch  (in ip 10.135.50.3)

interface FastEthernet0/1

switchport mode trunk 

[Joseph W. Doherty]

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Posting

Is Vlan 50 on the trunk?  Where/how is 10.135.50.3 defined?

[almir fiorio]

Yes . And switch have vlan 50 inserted.

[IAN WHITMORE]

So on your switch you have  this config?

ip routing

interface vlan 50

ip address 10.135.50.3 255.255.255.0 (or something similar)

interface FastEthernet0/1

switchport

switchport trunk encapsulation dot1q

switchport mode trunk

and vlan 50 exists on your switch in Layer 2? Please provide config of switch.

[almir fiorio]

Yes. But the vlan on switch layer is vlan 1.

Not 50. Check my configurationon top.

[IAN WHITMORE]

Well, that's why it's not working. It should be interface vlan 50. Try it. It will work.

If you want your router to talk to the switch in this VLAN (VLAN 50), in which you have configured the same IP address range, you need to create the VLAN 50 interface on the switch, not put the IP address in vlan 1.

Hope that helps.

Regards,

Ian

[Sebastian Helmer]

I'm not the router expert but I think you can use this "encapsulation dot1Q 50 native" So the traffic will "go" over vlan1 to your switch, because on a trunk vlan 1 is always nativ. Not pretty nice but could work.

BUT IAN is right, and I would do it like he told. My reply is just a possibility which could work but isn't really nice..

regards,

Sebastian

[almir fiorio]

Hmmm then if im switch´s ip inside vlan 50 inside same switch will works?

switch is connected in router by gi0/3 .

but im have another Fa0/2 in router with vlan 38 and the switch is in trunk with router.. im can put some hosts in this switch on vlan 38 and other in vlan 50 ????

See :

interface GigabitEthernet0/3

duplex auto

speed auto

media-type rj45

negotiation auto

no keepalive

interface GigabitEthernet0/3.50

encapsulation dot1Q 50

ip address 10.135.50.1 255.255.255.0

ip access-group 100 in

ip helper-address 10.132.5.81

interface FastEthernet0/2

bandwidth 100000

duplex auto

speed auto

media-type rj45

negotiation auto

no keepalive

interface FastEthernet0/2.38

encapsulation dot1Q 50

ip address 10.132.38.1 255.255.255.0

ip access-group 100 in

ip helper-address 10.132.38.81