Subnetting Within Single VLAN

Aug 19, 2007 1 Replies

Hello..



I have an ASA and sub-interfaces setup for multiple VLANS on a single interface.



One of the ranges is 10.1.79.0/24. On the switch I have servers plugged in and a WIFI router also plugged in. The ports are all members of this VLAN assigned to the 10.1.79.0/24.



I'm trying to split the range to a /25. So I assigned the Wifi router a WAN address of 10.1.79.129/25 and a LAN IP of 10.1.79.130/25. Range is 131-254. All hosts connected by Wifi can connect to the network in inet with no problems.



Servers plugged into the switch are assigned the 10.1.79.0/25 range addresses. They also can connect to the internet and network resources with no problems.



On the ASA I have created 2 sub-interfaces one for each sunet



10.1.79.0/25 & 10.1.79.128/25.

Is my configuration valid and will it work? I know I can try, but I havent implemented this yet on real hardware. Does the fact that I have the Wifi router and other servers and devices on the same VLAN make a difference; yet I'm trying to subnet the range as if they are on 2 seperate networks(VLANs)? I had to give the VLAN IDs in the ASA sub-interfaces configurations; will this be a problem?



In my opinion this may not work because the Wifi router isnt truely on its own VLAN and the ASA wont be able to tell the difference in the traffic, but then I think Layer 3 and that it shouldnt care.



Any help is appreciated..



GNY



Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required