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Creating multiple vlan in catalyst 3750 switch

kjanakiraman
Level 1
Level 1

Hi,

I have a cisco 3750 switch and port 11 is connected to the cisco pix firewall. I created vlan 2 and associated port 11 to vlan 2 with switchport access vlan 2. The ip address of vlan 2 is 192.168.20.3. The firewall inside ip address 192.168.20.1. The Management vlan vlan 1 has ip address 192.168.22.1. I created route statement in firewall as follows

route inside 192.168.22.1 255.255.255.0 192.168.20.3

and in the cisco switch

ip route 0.0.0.0 0.0.0.0 192.168.20.1. Till this i was able to ping all the ip address from switch and the firewall.

Now i have a system which is connected to port 14. I created vlan 4 and the ip address is 192.168.23.1 configured port 14 as switchport access vlan 4 and switchport mode access.

The moment i give the above commands vlan 1 goes down and vlan 4 comes up. When the remove the command vlan 1 comes up and vlan 4 goes down and i could not ping vlan 4 ip address from the switch and from the firewall. Can any one explain what is the mistake i am doing and how to create multiple vlans and all active and responding.

Thanks in Advance

1 Reply 1

skarundi
Level 4
Level 4

An interface vlan will be disabled if there are no ports on the switch in that vlan.

To keep the interface vlan 1 and interface vlan 4 up at the same time, attach 2 devices to the switch, one in vlan 1 and one in vlan 4.