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Stop broadband routers from giving out addresses

swilk
Level 1
Level 1

‎04-23-2007 05:22 AM - edited ‎03-05-2019 03:36 PM

At our University, we have a problem with students "accidentally" plugging in broadband wireless routers into our network backwards. When they do this they start giving out 192.168 addresses to other stations on the network.

What command can I put into Cisco 3548, 3550 and 3560 SMI switches to limit what DHCP server a station can see?

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jheckart
Level 3
Level 3

‎04-23-2007 12:08 PM

You'll need to enable dhcp snooping on your network, and only trust your valid dhcp server's.

This shouldn't be a difficult problem to eliminate.

http://www.cisco.com/en/US/products/hw/switches/ps5528/products_configuration_guide_chapter09186a00801e85cd.html

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