To follow up on this, and for reference for anyone else asking, we had the VM leased line installed yesterday.
They provided just the Alcatel OS6250-8M (after we said we'd prefer not to use their provided Cisco router),
On the Alcatel is the Fibre termination and an uplink port (amongst a few unused ones). The uplink is in the form of an SFP slot and a gigabit RJ45 slot - you can use either to plug in to your own kit.
In terms of IP addressing, we ordered a block of 16 IP's.
They provided a single static WAN IP, Subnet and Gateway which you assign the as the WAN IP on your router, and then they provided a separate routed subnet (different range) for the /28 block. All traffic is routed through the single WAN IP/gateway but of course you can assign any of your IP's to be used for internal servers or the default IP for outbound.
All working well using a Mikrotik RB1100AHx2 router (no Cisco in sight)
Edited by badnbusy (Thu 07-Jun-18 09:20:07)