Hi Guys..

I hv a confusion in my mind. Plz help me to clear my concept.

How a port respond when a PortFast port receives any BPDU.
Please make sure that BPDU Guard, ROOT Guard are not
considered in this scenario. Just a spanning tree without
any enhancement.

Will the port goes through STP port state??? As we knw that
PortFast bypass the Listening & Learning State? How it will
respond when a BPDU (Inferior or Superior) is received on
that Port.

Thanks in advance. Waiting for Replay.

Answer Posted / parshant jaswal

HI SHAHIN
1. WHEN YOU ARE ENABLING SPANNING TREE PORTFAST ON ANY
INTERFACE THAT MEAN YOU ARE KILL SPANNING TREE ON THE PORT.
PORT NEVER TAKE PARTICIPATES ON THE ELACTION OF ROOT BRIDGE.
2. AND PORTFAST FEATURE BYPASS THE LISTENING, LEARNING
AND MAX AGE
3. YOU CAN ENABLE BPDU GUARD FEATURE ON ALL NON-TRUNKING
FOR TO PROTECT YOUR TOPOLOGY TO RECEIVING ANY BPDU
4. ROOT GUARD FEATURE ENABLE ONLY BETWEEN ROOT AND NON
ROOT BRIDGE SWITCH AND NEVER USE IT BETWEEN PRIMARY AND
SECONDRY ROOT BRIDGE.

Is This Answer Correct ?    1 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Define osi?

616


Can you explain the broader steps of how L2F establishes the tunnel?

1560


What is default time of hello packets in ospf?

643


What is the subnet? Why is it used?

606


Which protocols are link states?

675






How do you go to privileged mode? How do you switch back to user mode?

635


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

694


What is 100BaseFX?

743


Referring to the commands shown, what command must next be used on the branch router prior to traffic being sent to the router router?

721


What is the ieee standard for wireless networking?

665


What is an autonomous system?

723


What are the two types of transmission technology use in ccna?

626


what does PPTP use for encryption and authentication?

1433


Explain how many broadcast domains are in switch?

764


What is the point-to-point protocol in ccna?

641