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

Answer / ramesh

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

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..

what is difference between 1 pap and chap(quite easy but need on line answer) 2 chap and ms-chap(plz describe briefly) now i have posted the question is there any one to help me?

2 Answers  

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How many types of IP routings?

14 Answers   CK, TCS,

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Explain the term 'broadcast'.

0 Answers  

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Which command will give the following output: Tty Typ Tx/Rx A Modem Roty AccO AccI Uses Noise Overruns Int * 0 CTY - - - - - 0 0 0/0 - 1 AUX 9600/9600 - - - - - 0 0 0/0 - * 2 VTY - - - - - 2 0 0/0 - 3 VTY - - - - - 0 0 0/0 - 4 VTY - - - - - 0 0 0/0 - 5 VTY - - - - - 0 0 0/0 - 6 VTY - - - - - 0 0 0/0 -

1 Answers  

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10. Which STP state populates the MAC address table but doesn't forward data frames? A. Blocking B. Listening C. Learning D. Forwarding

3 Answers   Cisco,

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How often does IP RIP send out routing table updates by default? A.) They send complete updates every 30 seconds B.) They send partial updates every 30 seconds C.) They send complete updates every 60 seconds D.) They send partial updates every 60 seconds

1 Answers  

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hi shain/sudeep and rest of all plz answer these question for help some one as soon as possible what is stub area what is transit area let there are three area in ospf a0 a2 and a3 if a2 and a3 is coneted through each other will they comnicate

3 Answers  

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Given the following IP address from the Class B address range 172.35.21.12. Your network plan requires no more than 126 hosts on a shored. Which value should you use as the subnet mask? A. 255.255.0.0 B. 255.255.128.0 C. 255.255.126.0 D. 255.255.255.128 E. 255.255.255.252

5 Answers  

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Identify the command that displays ethernet0/1 interface status? A.) show interface ethernet0/1 B.) show interface ethernet e0/1 C.) show interface ethernet0.1 D.) show ethernet0/1

3 Answers  

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Identify the hardware component that stores the backup configuration? A.) RAM B.) NVRAM C.) Flash D.) ROM

1 Answers  

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Which command will display the current time on a Cisco router? A.) show date B.) show clock C.) show running-configuration D.) show time E.) show controllers

2 Answers  

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Which layer is responsible for determining if sufficient resources for the intended communication exists? A.) Application B.) Network C.) Session D.) Presentation E.) Transport

1 Answers  

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