Re: Spanning Tree Root Guard Vs Loop Guard

I don't have switch in front of me as of now but I think we can enable ROOT
GUARD anywhere / any port (system will not complain .. )

Sometimes we enable it on range of ports (which are down as of now as well )
.. where we fear that a better switch can come and assume the role of root
of topology .

i.e whatever ports are going to customer network and we fear that there can
be a better switch located in customer internal network as well ; we enable
ROOT GUARD there !

Thnx
Gaurav Madan

On Thu, Sep 1, 2011 at 9:39 PM, Joe Astorino <joeastorino1982_at_gmail.com>wrote:

> A few things to keep in mind:
>
> 1) These are completely different features. Loopguard is used to prevent
> bridging loops usually as a result of unidirectional links. Rootguard
> ensures that unauthorized switches don't take over as your root bridge
>
> 2) They are not compatible because you configure loopguard on
> non-designated
> ports and you configure rootguard on designated ports
>
> On Thu, Sep 1, 2011 at 11:24 AM, dia.aliou_at_gmail.com <dia.aliou_at_gmail.com
> >wrote:
>
> > Hi Clark,
> >
> > In my understanding there is no difference enabling Loop Guard globally
> or
> > under the port.
> > I have not tested it, but bused on Doccd, you cannot enable loop guard
> and
> > root guard at the same time.
> >
> > HTH,
> >
> > Aliou
> >
> > On Thursday, 1 September 2011, Clark, Neil wrote:
> >
> > > Hi Guys,
> > >
> > > I have got a quick question regarding Root guard vs loop guard.
> > >
> > > If you enable loop guard globally does it have any other affect other
> > > than to enable Loop guard on every port?
> > >
> > > And if you have Root guard configured on ports and you enable Loop
> guard
> > > Globally does this have any adverse affects??
> > >
> > > Any thoughts which is the a better route to go and why??
> > >
> > > Thanks
> > >
> > > Neil
> > >
> > >
> > >
> > >
> > >
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Received on Thu Sep 01 2011 - 22:09:20 ART