Can anyone explain the STP Security features. Just like BPDU
guard, Root Guard.
Hi JITENDERA, i m specially looking for u?????
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Answer Posted / jitendera kumar sinha
Spanning Tree Protocol Features
1 Bridge Protocol Data Unit (BPDU) Guard
2 Root Guard
3 EtherChannel Guard
4 Loop Guard
these 4 are major spaing tree feature
for understand that at first we must understand the spaing
tree term
root bridge-it is the bridge with the best bridge id.it is
the focal point of the network and which point is block and
which point is in forwading mode is are made from the root
bridge.
here comes bpdu gurd
slection cretirea of root bridge depend upon BPdu default
vale 2 sec.
each bpdu conatin
1 mac address
2 bridge priorty(32768 default)
3 bridge identy
so
BPDU contains management and control data information that
is used to determine the root bridge and establish the port
roles—for example: root, designated, or blocked port.
2 root port-.the root port is alway link directly conected
to root bridge.if there is more then one link then port
cost is detirmine if port cost is smae then bridge identy
comes in account
here comes root gurd
in a shairesd swiched envorment where there is many
conection betwen switches it is important to identify the
correct placement of the root bridge.With the Root Guard
feature, a Layer 2 interface is set as the designated port,
and if any device through this port becomes the root
bridge, the interface is placed into the blocked stae
this is all about root gurd
i will expalin two parametar tomorrow because i have some
work
thanks
jitendera kumar sinha
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