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broadcast-limit on 5400zl

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Christian Borén
Occasional Visitor

broadcast-limit on 5400zl


Does anyone use the broad-cast limit feature ?

Do you know if there's a way to log or send an SNMP trap when it's enforcing the limit ?

Also, does the broadcast-limit only limit broadcast or multicast aswell ?

Matt Hobbs
Honored Contributor

Re: broadcast-limit on 5400zl

I'm fairly certain there is no notification when the broadcast-limit is reached.

From K.12.23 onwards, it does only limit broadcast traffic. Multicast traffic is not affected.
Case Van Horsen
Frequent Advisor

Re: broadcast-limit on 5400zl


There are no alerts. The only way I've been able to detect that it triggers is by seeing Tx drops on the interface.

Do not set the value too low. The number of broadcasts is counted over a very short time interval and it can easily be triggered by a benign spike in ARP requests.

I originally deployed with a broadcast limit of 10% and had a lot of intermittent host unreachable problems. Since there was no way to monitor when it happens, I finally removed it. :-(

Christian Borén
Occasional Visitor

Re: broadcast-limit on 5400zl

Great, thanks for the replies.
Joel Belizario
Trusted Contributor

Re: broadcast-limit on 5400zl

Please say thanks with HP points! Matt is a true legend on this forum.