Maximum distance for VSS and VSL

balbaletabrez · ‎02-24-2010

Hi,

Can someone tell me till how much distance can we have VSL,

I have 2 x 6509 serving as redundant switches and now i plan to upgrade to VSS, but both switch are 2KM away from each other.

Thanks

Tabrez

fly · ‎12-13-2011

i have same question , no one answer me.

i have seen vss all in same location utill now!

i am interesting to implement vss in different location , about 50 km to 80 km distance. but i haven't seen any real experience.

balbaletabrez · ‎04-29-2012

Hi,

At a distance of 2 Kms it did work .....for you it should work with ZR.

Sent from Cisco Technical Support iPad App

Leo Laohoo · ‎04-29-2012

I have a VSS pair and the distance is about 20 Km. It works but I wouldn't recommend it.

fly · ‎07-27-2012

Hi Leo

Why you didn't recommend it?

Thank you

Fly

Leo Laohoo · ‎07-28-2012

Why you didn't recommend it?

If, for example, the VSS will go into "split-brain" then you don't want to drive 20 Kms away just to give the 2nd unit a kick-in-the-guts.

Particularly, when the outage is severely disrupting services.

If I wanted a VSS pair, I want it to be no more than 50 metres away.

fly · ‎07-28-2012

Hi Leo thankyou