STP Priority: Lowest Mac-address
Deathmage
Banned Posts: 2,496
in CCNA & CCENT
Hey guys,
So I'm over here look at STP and using the boson sim at work on the laptop and I'm curious would it be helpful on the exam to write out the 15 character hex chart?
IE:
1 = 1
2 = 2
3 = 3
4 = 4
5 = 5
6 = 6
7 = 7
8 = 8
9 = 9
10 = A
11 = B
12 = C
13 = D
14 = E
15 = F
example:
e.g 1 sw has 01-23-45-67-89-ab & another FF-BB-CC-AA-DD
to me 01-23-45-67-89-ab is the lowest cause F equals 15 and '0' equals well zero!
Obviously this would only an issue if STP priority is on two switches and they both have a priority of 0 or otherwise match with a priority below 65535 and then the lowest mac address is chosen, but I guess reading a mac address upon itself it good to find the root address. Outside of an exam I'm just use the 'Spanning-tree vlan [number] root primary' but this is a Cisco exam prep and I bet they will quiz me on everything!!!!!
So I'm over here look at STP and using the boson sim at work on the laptop and I'm curious would it be helpful on the exam to write out the 15 character hex chart?
IE:
1 = 1
2 = 2
3 = 3
4 = 4
5 = 5
6 = 6
7 = 7
8 = 8
9 = 9
10 = A
11 = B
12 = C
13 = D
14 = E
15 = F
example:
e.g 1 sw has 01-23-45-67-89-ab & another FF-BB-CC-AA-DD
to me 01-23-45-67-89-ab is the lowest cause F equals 15 and '0' equals well zero!
Obviously this would only an issue if STP priority is on two switches and they both have a priority of 0 or otherwise match with a priority below 65535 and then the lowest mac address is chosen, but I guess reading a mac address upon itself it good to find the root address. Outside of an exam I'm just use the 'Spanning-tree vlan [number] root primary' but this is a Cisco exam prep and I bet they will quiz me on everything!!!!!
Comments
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networker050184
Mod Posts: 11,962 Mod
If you can't memorize it then sure write it down.An expert is a man who has made all the mistakes which can be made. -
TWX
Member Posts: 275 ■■■□□□□□□□
Start with the most significant digit. Compare across the LAN. If two lowest numbers tie, compare the second most significant digit of the ties. Repeat with the third, fourth, fifth, etc.