Ask the Expert

Linking an unmanaged switch and DHCP server

I have a Netgear 48-port managed switch and a Linksys 24-port unmanaged switch. I have connected the Netgear to the Linksys via the uplink port. Systems connected to the Linksys are not getting an IP address from our DHCP server, but when the same systems are connected to Netgear it works fine. Why?

    Requires Free Membership to View

The Linksys switch, being an unmanaged switch, cannot understand where to send BootP/DHCP requests; hence this issue. Move the Linksys switch off of the uplink port to any of the other Layer 2 ports. This will make Linksys an extension of Netgear. If you are using a fiber connection, try changing this to a cross-cable connection.

Another approach to try, though a long shot, is to define an "IP helper-address" on Linksys as the management IP of the Netgear switch.

This was first published in August 2010

There are Comments. Add yours.

TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to: