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Audrey :v_trans:

@hacks4pancakes I always set the core to such a low number that you’d have to purposely want to take the network down.

3 comments
Audrey :v_trans:

@hacks4pancakes

My mentor when I was studying for my CCIE told me the horror stories of someone taking down the network by plugging in an old lab switch with a higher VLAN rev. I would even go in and delete the vlan.dat before putting a switch into the boneyard. That paranoia translated into me eventually going away from route/switch and into security space :)

Adam Thompson

@AngryTransLady @hacks4pancakes Also do not intermingle PVST and RSTP in the same production network. Worst-case I've seen was a regional trauma center (hospital) sending all emergent patients out-of-country [1] thanks to those competing protocols not coexisting nicely.

Of course I've also flatlined a network for 6+ hrs while trying to fix it preventitively(?), so YMMV :-/

[1] only about two miles away across the border, but still a Really Big Problem. No-one died or had any resulting permanent major problems as a result, that I know of.

@AngryTransLady @hacks4pancakes Also do not intermingle PVST and RSTP in the same production network. Worst-case I've seen was a regional trauma center (hospital) sending all emergent patients out-of-country [1] thanks to those competing protocols not coexisting nicely.

Of course I've also flatlined a network for 6+ hrs while trying to fix it preventitively(?), so YMMV :-/

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