From: Steven Hodgson (steven.hodgson@inxi.com)
Date: Tue Jan 22 2008 - 15:22:44 ARST
I came across this same lab question, so I know what you're talking
about. I agree that the bpdufilter doesn't exactly disable spanning
tree, it just prevents it from doing anything. I guess it depends on
your interpretation of the question, but in the DocCD it does say that
bpdufilter is essentially the same as disabling it.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
maritpra@hotmail.com
Sent: Thursday, January 17, 2008 8:54 PM
To: ccielab@groupstudy.com
Subject: Is "spanning-tree bpdufilter" disable SPT?
I just come across a lab that ask me to disable SPT. The full question
is
Assume SW2 will never connect to switch or bridge. Disable Spanning Tree
on this interface. You may not use "no spanning-tree" commands to do
this. The interface must be up.
According to the above question, their solution is by using
"spanning-tree bpdufilter" but my answer is "no switchport"
I just doubt whether they give me correct solution or not?
"spanning-tree bpdufilter" just filter bpdu but not disable spt, I found
that f0/15 is still participate in stp by using "show spanning-tree vlan
1" and found that f0/15 still there.
If I go with "no switchport", f0/15 is removed from show spanning-tree
command result. yep, becuz it's already L3 port.
Any idea?
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