Question

Cisco Catalyst 2960 VLAN

Asked by: faberk

Hi,
I need to setup indipendent VLANs on a Cisco Catalyst 2960.
I got a firewall/gateway plugged at interface 1 on that switch and I need to setup one VLAN on each other free interface.
All traffic generated by the VLANs, inbound/outbound, must go though my firewall/gateway on port 1.
I tryied to set more than a VLAN on the same port, without luck
Is this possible?
Can you suggest me how to do that?
Thanks

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Asked On
2009-02-01 at 15:53:20ID24103448
Tags

CISCO Catalyst 2960 multiple VLAN

Topic

Miscellaneous Networking

Participating Experts
2
Points
500
Comments
4

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Answers

 

by: giltjrPosted on 2009-02-01 at 18:10:08ID: 23524039

To make sure:

1) You must have two VLANs.
2) All traffic from either VLAN must go through the firewall, even if the traffic is destine for another host on the same VLAN.

The only way you can have more than one VLAN on a port is to make the port a TRUNK.

 

by: faberkPosted on 2009-02-02 at 02:16:24ID: 23525563

Hi,
i got these:
vlan internal allocation policy ascending
!
vlan 101
vlan 102
!
interface GigabitEthernet0/1
 switchport access vlan 101
 switchport mode access
!
interface GigabitEthernet0/2
 switchport access vlan 101
 switchport mode access
!
interface GigabitEthernet0/3
 switchport access vlan 102
 switchport mode access
!

on interface 0/1 I got the firewall/gateway, on 0/2 the first VLAN and on 0/3 the second VLAN.
Now, the 0/2 works perfectly, but 0/3 doesn't.
Of course is due to the fact that 0/1 in part of that VLAN.
How can I let 0/3 works?
How do I have to configure it?

Thanks

 

by: gnegrotaPosted on 2009-02-02 at 02:48:38ID: 23525711

Hi
Modifications:
( be sure that you are in console or from a different interface than GE0/1 !!! )

conf t
interface GigabitEthernet0/1
no switchport access vlan 101
no switchport mode access
shut
switchport mode trunk
!
switchport trunk allowed vlan 101
switchport trunk allowed vlan add 102
no shut
end

This will trunk both vlan to Firewall port !

20120131-EE-VQP-002

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