Help asap regarding cisco broadcast storm and dhcp snooping

JoloNation

Hi guys.

I'm just new in networking environment. can someone explain to me the meaning of broadcast storm and DHCP Snoopin on lay mans term? PLEASE.

I really appreciate it.

Thank you so so much in advance!

Codeman6669

Broadcast storm is when your network gets overwhelmed with continuous broadcast frames. This happens for a couple reasons but for sake of keeping this simple switching loops, poor network design, or poorly programmed devices can cause this. STP (Spanning Tree Protocol) is your friend here

Gngogh

Dhcp snooping.. is a security feature that acts like a firewall between untrusted hosts and trusted dhcp servers. What this does is to prevent rogue dhcp servers from offering ip addresses on a given network. For more information lookup on google if you want to know how to configure it.

bharvey92

Codeman6669 wrote: »

Broadcast storm is when your network gets overwhelmed with continuous broadcast frames. This happens for a couple reasons but for sake of keeping this simple switching loops, poor network design, or poorly programmed devices can cause this. STP (Spanning Tree Protocol) is your friend here

Just to add, disabling STP can event in a Broadcast storm! - Moral of the story. Don't disable STP!

gorebrush

Or don't use cheap switches that don't support STP. That burned me once... (a LONG time ago)

tecnodog7

Also it's very important to know how the STP works. Many people configure a network without even having any clue about STP and if you don't change the default Bridge ID from the default one then you can also really cause havoc on your network at best and the worse is bring down your entire network.