I have question here command
spanning-tree guard loop.
First I enable it on single port which has fibre connection to switch 2.
This is what I found
On switch 1 port where I enable this I took 1 fibre cable out and port went from up to down state.
On switch 2 where there is no guard loop configured that port went into errdisable state.
Then on switch 2 also I config the command ----------- spanning-tree guard loop.
Then on switch 1 I took single fibre cable out.
Both switch ports are down down and no port is errdisabled?
So my question is is this default behaviour of guard loop command on both the caes?
Nah! this is not a default behaviour, looks weird if i got u right! what else you have configured on ur adjacent ports?
is UDLD by any chance enabled on swicthes? w.e.i.r.d.
Handoko, I tell you why....
Loop guard is a feature to prevent unidirectional loops (esp fiber optic connections) same as UDLD, so it doesnt matter how many switches, also, it is always advised to use STP under all circumstances since u never know when n how a topology change might occure.
an a Last comment: he might be trying to test this commands and behaviours in a LAB environment did i answered u, haha...