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Braodcast problem

As per books and documentation, vlan doesn't allow broadcast to passon. But In reality when we face the broadcast storm kind of problems then the whole network goes down. What's the fun here didn't understand???????????????????????

How can i check whether the broadcast frames are passing from one vlan to another.

Help on this topic will be great help for me..

1 REPLY
Green

Re: Braodcast problem

VLANs do not magically increase the bandwidth of the physical link. If you have a 100Mbps link, and 10 VLANs, then the ten VLANs will share 100Mbps of bandwidth.

If one of the VLANs is having a broadcast storm, then it can / will consume 100% of the available bandwidth.

Do a search on the main site for "Broadcast Suppression" and the model of device you are using, You may be able to throttle back the broadcast traffic on a particular VLAN / Port / Port group.

Otherwise, make sure you have "Per-VLAN Spanning Tree" (PVST) enabled if the device is a switch. That should kill the most likely source of your broadcast storms.

Good Luck

Scott

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