What is Spanning Tree Protocol and how it work? I know it
is - STP is Spanning tree Protocol. It Stops the looping in
the network? How STP work? How it stop Looping in network?




Answers were Sorted based on User's Feedback



What is Spanning Tree Protocol and how it work? I know it is - STP is Spanning tree Protocol. It S..

Answer / guest

STP is a Protocol used for the loop free environment, when a
network is totally based on a switch....as we know that to
ensure the all time availability of the network we have to
develop redundancy....if the destination is unknown and has
to find out by the switch.... now because of this redundancy
loop occurs..

to solve this problem STP is used..in STP there is a main
head of all switches called ROOT BRIDGE (the Switch having
lowest MAC address or Lowest Priority value - default is 32678).

Main step is to find out all the possible paths to each
destination. After that root bridge uses STA (spanning Tree
algorithm)to find out the best suitable path to the destination.
Other paths to the same destination are set to blocking
mode to avoid the looping....
In this the other non-Root bridge switches continues to
update them selves by receiving the BPDU every 2 secs
generated by the root bridge....

In STP there are five main modes that a switch can have:
1. Blocking :in this case the switch doesn't forwards the
data, but receives BPDUS
2. Listening :in this switch starts checking the updates
3. Learning :in this the switch starts updating itself,
according to the updates
4. Forwarding :switch starts forwarding the main data(here
the network is called as Converged-meand each and every
switch has its cam table equal)
5. Disabled :port is disabled by admin

Is This Answer Correct ?    31 Yes 4 No

What is Spanning Tree Protocol and how it work? I know it is - STP is Spanning tree Protocol. It S..

Answer / ramesh

STP is a spanning tree protocol which is used in switched
network to avoid the network loop in the network.

Is This Answer Correct ?    4 Yes 0 No

What is Spanning Tree Protocol and how it work? I know it is - STP is Spanning tree Protocol. It S..

Answer / rahul sharma

STP is a Protocol used for the loop free environment, when a
network is totally based on a switch....as we know that to
ensure the all time availability of the network we have to
develop redundancy....if the destination is unknown and has
to find out by the switch.... now because of this redundancy
loop occurs..

Is This Answer Correct ?    5 Yes 9 No



Post New Answer



More CCNA Interview Questions

Sequence and acknowledgement numbers are used for? A.) Layer transitioning B.) Flow control C.) Port number addressing D.) Reliability

1 Answers  


What is the difference between an igp and an egp?

0 Answers  


3 router configured with RIP & Ripv2 rotuer 1- connected with router 2 having sr ip 10.0.1.2 routing : ripv2 router 2: connected with router 1 and router 3 having sr 0 ip 10.0.1.3 & sr 1 ip 11.0.1.2 routing :rip & ripv2 router 3: connected with router 2 having sr ip 11.0.1.3 routing: rip is there communication possible btween these networks ? if yes how

2 Answers  


What are the two types of access lists that can be configured on a Cisco router? A. Standard B. Extended C. Filtering D. Packet

2 Answers  


Identify the command that displays traffic statistics on serial0/1? A.) display interface serial0/1 B.) show interface serial0/1 C.) show seria0/1 stats D.) show interface serial0/1 stats

1 Answers  






Explain the benefits of VLANs.

0 Answers  


What key do you use to view the last command? A.) Left Arrow B.) Space Bar C.) Up Arrow D.) Right Arrow

2 Answers  


Ping uses which Internet layer protocol? A.) RARP B.) ICMP C.) ARP D.) FTP

4 Answers  


Can you explain VPN tunneled packet in detail?

0 Answers   CCIE,


Which of the following is a routing protocols? TCP RIP SMTP UDP

7 Answers  


Identify 3 characteristics of ISDN? A.) Transports voice and data B.) Transports voice only C.) Support both BRI and PRI D.) Runs over existing phone lines E.) Same as X.25

1 Answers  


As a system administrator, you need to set up one Ethernet interface on the Cisco router to allow for both sap and Novell-ether encapsulations. Which set of commands will accomplish this? A. interface ethernet 0.1 ipx encapsulation Novell-ether ipx network 9e interface ethernet 0.2 ipx network 6c B. interface ethernet 0 ipx encapsulation Novell-ether ipx network 9e interface ethernet 0 ipx encapsulation sap ipx network 6c C. interface ethernet 0.1 ipx encapsulation Novell-ether interface ethernet 0.2 ipx encapsulation sap D. interface ethernet 0.1 ipx encapsulation Novell-ether ipx network 9e interface ethernet 0.2 ipx encapsulation sap ipx network 6c

1 Answers  






Categories