[j-nsp] EX4200 Virtual Chassis Uplink Requirements - Extended VCT / VCCP

[Sascha Luck]

James,

On Sun, Jun 24, 2012 at 08:43:22PM +1000, James Jimenez wrote:
>I am curious with a EX4200 as to the requirements of the uplink ports when
>attempting to use VCT / VCCP. Juniper documentation says a 1000BaseTX SFP
>module is unable to be used however I have been told that this does in fact
>work and the documentation may not have caught up yet?

the information I have is that the extended VC links must be optical. .

>I am also curious as to the requirements of the fibre uplink ports. If we
>are purchasing carrier services does it have to be a dark fibre link or are
>we able to use VCT over a Carrier VPLS 1G Ethernet service (LX/LH/SX)? We
>are hoping to VCT a number of chassis over a 30km distance.

AFAIK, VCCP uses non-standard Ethernet frames and there must not be 
any L2 (and up) devices in the VC link path as these devices would drop the 
VCCP frames.

rgds,
Sascha Luck