Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Subnetted Vlans

Hi there,

As part of my prject, I must configure about 5 VLANs in a network, I was thinking about creating a subnet for each VLAN, Would this be a good idea or a bit over kill for a small network?

3 REPLIES
New Member

Subnetted Vlans

Yes, createa a subnet for each vlan.

-Ahmed

New Member

Subnetted Vlans

Thanks for the quick reply. What is the main benefit of doing this?

New Member

Subnetted Vlans

Tony,

The main benefits are security and limiting broadcast traffic.

Putting them on different VLAN will secure the devices from seeing each at on the data link layer.  They will not be able to ARP or see MAC broadcasts.

Well, one of the central purpases of vlan is to device a switch so that you can segregate devices that are on different subnets but that are not separated by a router. You see, when devices are in the same vlan they can do MAC broadcast to each other but when they are on different vlan they have to communicate with each using layer 3 devices.

-Ahmed

194
Views
0
Helpful
3
Replies
CreatePlease login to create content