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STP question ?
daras
Member Posts: 33 ■■■□□□□□□□
in CCNA & CCENT
In order to find our DP ports in a LAN segment we 've to calculate the cost to the Root Bridge
The cost is the sum of the link speeds to the Root Bridge,
Lets say the that i 've two switches connected together in Fa0/2 (1st switch) and gi0/1 (2nd) the cost of this link will be 4 or 19
I cant understand this concept
The cost is the sum of the link speeds to the Root Bridge,
Lets say the that i 've two switches connected together in Fa0/2 (1st switch) and gi0/1 (2nd) the cost of this link will be 4 or 19
I cant understand this concept
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veritas_libertas
Member Posts: 5,746 ■■■■■■■■■■
I struggled with this concept for a while as well. The best thing to do is lab it out. Here is a thread on TE discussing this: https://www.techexams.net/forums/ccna-ccent/84636-designated-vs-blocking-port-decision.html -
Optionsdaras
Member Posts: 33 ■■■□□□□□□□
Can you please answer this question to me it is importnat to understand the STP designated ports process
Lets say the that i 've two switches connected together in Fa0/2 (1st switch) and gi0/1 (2nd) the cost of this link will be 4 or 19 ?
Thanks -
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networker050184
Mod Posts: 11,962 Mod
What do you think it will be?
We are here to help, not feed you answers.An expert is a man who has made all the mistakes which can be made. -
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JoeBirds
Member Posts: 49 ■■□□□□□□□□
The speed on a link between two switches HAS to be the same or the link will not be in an up/up state. Since they both need to agree on a speed, there can only be one cost to the link. In this case, the link would be a cost of 19 as each switch would autonegotiate to using 100mbps.
