Interested to Buy Any Domain ? << Click Here >> for more details...
How the STP determinw that which Port should be Root Port,
which port should be Designeted Port , Blocking Port and
Forwarding Port in Layer 2 STP topology
- 7 Answers
- 11575 Views
- Tech Mahindra, Wipro, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / jitendera sinha
this protocol is called BPDU.
remember that i am not going to expalin the prorty value
mac value.
BPDU is the best answer for the interview
if you need explanation then post it i will send the
explanation
| Is This Answer Correct ? | 27 Yes | 4 No |
Answer / guest
the port that has the least cost toward the root bridge is
considered theroot port andthe one that is in the opposite
direction is considered the designated port.
now the one that has the better cost (remember lower is the
better)among the two parellel connections is considered the
forwarding port and the one that has higher cost is takes
as the blocking.
| Is This Answer Correct ? | 6 Yes | 1 No |
Answer / guest
@ Jitendera Sinh- Please don't misguide if u don't know the answer.
BPDU's are packets exchanged b/w switches to to know the interface to which it is connected to. (not protocol.
TO answer the question you need to explain the STP.
This is how entire STP works in simple words.
1.Lowest Bride ID will be elected as ROOT bridge.
2.All the ports of ROOT bridge will be DP
3.All ports directly connected to ROOT bridge will become RP
4.Based on the path cost to reach ROOT bridge, the Port will become RP(Other than directly connected bridge)
5.The Port to which RP is connected will be a DP.
6.All other(Extra) port will be either DP/BP based on the Bridge ID.(Lower will be DP)
| Is This Answer Correct ? | 6 Yes | 1 No |
Answer / venkatesh
ports enter into the root bridge,these ports are called as
designated ports.The out going ports which are enter into
the root bridge is known as root ports.The alternative root
for the network is known as blocking port.Which port
overcome the listening,learning,blocking modes is called as
forwarding port
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / vinoth
STP to identify the Root Port used by Priority value and mac
address, and designated port calculated by closed port of
root port per link, other ports are non-designated port.
| Is This Answer Correct ? | 0 Yes | 0 No |
What is ping utility?
Why is UDP lease favored when compared to TCP?
Identify 3 characteristics of a connection oriented protocol? A.) Path determination B.) Flow control C.) Acknowledgements D.) Uses hop count as metric E.) 3 step handshake
Wild card mask always in odd value or even?
What command will display all connected OSPFv2 routers?
Identify 2 HDLC characteristics? A.) Default serial encapsulation B.) Open standard C.) Supports Stacker compression D.) Supports point-to-point and multipoint
I want to configure a serial interface on a 7500 with a VIP card. What global config command would give me access to a serial interface on a 7500? A.) int 1/0/0 B.) int s 1/0/0 C.) int s 1/1 D.) int s0.1 E.) int s1
Suppose we have some switch in network and we are running RSTP how much convergence time will be there if one link down
How do i decide if an extended access-list is in or out?
Identify the protocol to test connectivity without configuring any layer 3 protocols? A.) TCP B.) Ping C.) IP D.) CDP E.) Telnet
Which layer of the 7 layer model provides services to the Application layer over the Session layer connection? A.) Transport B.) Application C.) Session D.) Network E.) Datalink F.) Presentation
Which protocol you manually enable route summarization?
CCNA 
