Advice on basic STP and network design

Question

Hi,

Please could someone give me guidance for building a basic network with regards to STP settings.

Lets say a "core switch" and a few edge switches. All switches connect back to the core via a 2 port lag group.

So what would some common settings be?

Port fast on all ports connecting to client devices ? - (main advantage is port up speed is increased-but downside is that can still cause STP topology changes?)
RSTP enabled on all switches ?
Root Guard to ensure root stays as the core?

Any thing else that you would recommend?

Cheers

Dave

Stem_Dave · Answer

Thank you for your reply, so regarding portfast, does this disable STP on the port?, if a device is plugged into a port configured with portfast could it cause a topology change on the network?

Thanks

Dave

Stem_Dave · Answer

OK thanks, so the ONLY advantage to enabling portfast is to get around the initial delay of waiting for STP to sort out the port?

What would you recommend for ports where public devices can be plugged in? we don't want these devices to cause an issue for the rest of the network.

Thanks

Dave

Stem_Dave · Answer

Having a quick look I can see the command is available on a 7048 and a 6248 but not on the cheaper switches generally used for edge switches like the 3548 ? Is there a comparative command i could use on these?

thanks

Dave

Stem_Dave · Answer

OK great, you've been most helpful. Thanks Dave

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Advice on basic STP and network design

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