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Community Member

Switch to hub connectivity

Is connecting a Fast Ethernet hub to a Catalyst 5500 a bad thing? If not, what is the proper way to connect them.

3 REPLIES
Bronze

Re: Switch to hub connectivity

Its a reversion to old technology. The Cat port can only run half duplex. The users on the hub will share a collision domain. It will work, its not too bad for slow low use devices. It takes a cross over cable or the hub might have an uplink port that will do the cross over. It might have a button that controls if the port is crossed over or not.

Community Member

Re: Switch to hub connectivity

And you shouldn't run Spanning Tree PortFast on the port connected to the hub in case someone loops two ports on the hub.

Re: Switch to hub connectivity

Hi,

spanning-tree portfast bpduguard

is necessary to prevent a loop problem in the case someone loops two ports on the hub.

Disabling Spanning Tree PortFast is not enough.

Regards,

Milan

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