Communication between L2 VLAN and L3 Servers

Aug 23, 2005 1 Replies
R

I have to create multiple VLAN in a Layer 2 Switch and get different IP subnet's from the DHCP server sitting in my gateway. AM using a L3 Switch as a core switch (where the IP helper is assigned). I have connected Layer 2 Switch and a Layer 3 switch with Fiber. I have created untagged VLAN in both the switches. I have created a virtual Interface for that particular VLAN and have connected the Fiber cable to that port where I have created a untagged VLAN.



CAN ANYBODY HELP ME IN SOLVING MY PROBLEM OF GETTING DIFFERENT SUBNET IP'S from DHCP SERVER FOR L2 CLIENTS... IS IT POSSIBLE???



Regds Rajesh


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R

There are two things I see missing, which you may have done, but I want to make sure.

  1. You need to configure a trunk port between the two switches. Assuming two 3550 series switches, connected using each others' GigabitEthernet0/1 interfaces, the config would look like this:

interface GigabitEthernet0/1 no ip address switchport trunk encapsulation dot1q switchport mode trunk

  1. I don't see that you assigned the ports to their respective VLANs. For example, if you want a host to get an IP address from VLAN 3's IP space, you need to configure its port for VLAN 3.

interface fastEthernet 0/1 switchport mode access switchport access vlan 3

HTH

Robert

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