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Community Member

reg portfast

hi

i have enabled portfast command in the core switch and distruction switches.

do to unnoticed reason user trying to create his own network with the help of hub. at times its lead to create the transist loop between the core switches and hub.

how to resolve this?.

I would like to know any alternative solution to resolve this.

3 REPLIES

Re: reg portfast

How is the loop created?

is the user creating the loop by connecting 2 ports together?

Are you using port-security on this port for limiting the MACs on it?

It think the problem might be on the user end, not on the LAN devices.

Vlad

Community Member

Re: reg portfast

i thought about this. but port-security will only the destination mac control but when occures source destionation and destination frame remain same.

and also i have simulated loop by doing one of the port in hub by self looped.

Re: reg portfast

Port-security will block source MACs appearing on the interface, so if a loop occurs and it detects more than the permitted number of MACs it will be blocked.

Vlad

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