Can anyone explain the STP Security features. Just like BPDU
guard, Root Guard.

Hi JITENDERA, i m specially looking for u?????

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

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the terminal emulation?

625


Suppose we are having two Switches i.e. Switch1 & Switch2 Port1 of Switch1 is Connected to Uplink and switch2 is also connected to switch1? So 1>Is there is any loop? 2>How we come to know that there is a loop created? 3>If we add Switch3 to switch2 then there is a possibility of loop Creation?

1661


If bandwidth will increase what will happen?

732


Explain the term 'unicast'.

652


Explain the difference between arp and rarp?

1145






What is the difference between ‘bit rate’ and ‘baud rate’?

626


What is bgp?

600


Explain the term 'multicast'.

623


What do you understand by poe (power over ethernet)?

694


What is the command use to add a banner to a cisco router configuration?

630


How does PPTP encapsulate data?

2087


What is the maximum value of administrative you can use?

639


Define the igp (interior gateway protocol)?

630


Interface 0/0 what does it mean?

680


Can you explain in a generic manner the packet of IPSec?

2357