InterVLAN routing

Unanswered Question
Mar 20th, 2008


I have 3750G-24PS switch i have three VALN's which are in different subnet mask how can i get access in between those Vlans

I have this problem too.
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glen.grant Thu, 03/20/2008 - 06:28

As long as ip routing is turned on in the 3750 you should be able to talk between those vlans if everything is configured correctly.

mahendra.alhat Thu, 03/20/2008 - 06:47


But i have problems while talking between vlan's. Can u please give me idea how to route between vlan

francisco_1 Thu, 03/20/2008 - 06:52

ok. firstly your switch must be able to do a layer 3 routing (Find out if the switch image is able to do rouitng). able to route between vlans. make sure ip routing is enable. you also need to create a SVI( Switch virtual interface) for each vlan for intervlan routing to work.

for example to route between vlan 1 and vlan 2, you need to create a SVI for both vlan 1 and vlan 2. switch(config) int vlan1, give it an address. do the same for vlan 2 and it should work.

make sure you PC's gateway is the SVI on the switch. if the PC's are in vlan 1, their gateway should be the address for Vlan SVI.


Istvan_Rabai Thu, 03/20/2008 - 13:36

Hi Mahendra,

Can you please post the running-config of the switch here?

Thank you:



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