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Whats the difference
Question asked in book is
What steps to take to prevent VLAN hoping
Answer
A. prune the native vlan off both ends of trunks
B. Prune native vlan from the trunk.
Book says answer is A, but what is the difference?
if possible what's the configs to achieve both?
cheers
What steps to take to prevent VLAN hoping
Answer
A. prune the native vlan off both ends of trunks
B. Prune native vlan from the trunk.
Book says answer is A, but what is the difference?
if possible what's the configs to achieve both?
cheers
- If you can't explain it simply, you don't understand it well enough. Albert Einstein
- An arrow can only be shot by pulling it backward. So when life is dragging you back with difficulties. It means that its going to launch you into something great. So just focus and keep aiming.
Linkin Profile - Blog: http://Devilwah.com
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Netwurk
Member Posts: 1,155 ■■■■■□□□□□
A is more correct as it states you apply your command to both ends of the trunk
B might give the impression you only do one end
In brief, the commands are:
If vtp pruning is enabled use switchport trunk pruning vlan
Or set it manually with switchport trunk allowed vlan
For more details, read your book
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DevilWAH
Member Posts: 2,997 ■■■■■■■■□□
A is more correct as it states you apply your command to both ends of the trunk
B might give the impression you only do one end
In brief, the commands are:
If vtp pruning is enabled use switchport trunk pruning vlan
Or set it manually with switchport trunk allowed vlan
For more details, read your book
but in my mine to prune the vlan of a trunk you would configure
switch-port trunk remove vlan X on both ends. Why would you ever only configure one side? that's just lazy. If traffic can pass on to the trunk in any way (even if only from one side) then that in my mind does not meet the statment
"pruned from the trunk"- If you can't explain it simply, you don't understand it well enough. Albert Einstein
- An arrow can only be shot by pulling it backward. So when life is dragging you back with difficulties. It means that its going to launch you into something great. So just focus and keep aiming.
Linkin Profile - Blog: http://Devilwah.com -
OptionsNetwurk
Member Posts: 1,155 ■■■■■□□□□□
Well there's no command switchport trunk remove vlan, but technically you're right and what you state agrees with answer A.
OK?
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OptionsDevilWAH
Member Posts: 2,997 ■■■■■■■■□□
Well there's no command switchport trunk remove vlan, but technically you're right and what you state agrees with answer A.
OK?
ok so the full command isswitchport trunk allowed vlan remove xx
but that's what the ? key is for, I'm dyslexic, I make a point of never remembering the full commands, I know where to find them and if I get stuck ? or tab, you can use them in Real life and in the CISCO exams so every thing I type is generally abbreviated.
Unless I put "code" tags around a command don't expect it to be spot on - If you can't explain it simply, you don't understand it well enough. Albert Einstein
- An arrow can only be shot by pulling it backward. So when life is dragging you back with difficulties. It means that its going to launch you into something great. So just focus and keep aiming.
Linkin Profile - Blog: http://Devilwah.com -
OptionsNetwurk
Member Posts: 1,155 ■■■■■□□□□□
ok so the full command is
switchport trunk allowed vlan remove xx
Yup
And you can also useswitchport trunk allowed vlan add xx
Luckily for you, there is no longer a need to learn all the set commands for CatOS -
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chmorin
Member Posts: 1,446 ■■■■■□□□□□
With cisco if you get two "They both could..." answers, pick the cisco wanted "best" one. They like that.Currently PursuingWGU (BS in IT Network Administration) - 52%| CCIE:Voice Written - 0% (0/200 Hours)mikej412 wrote:Cisco Networking isn't just a job, it's a Lifestyle.
