> - Layer 2 Ethernet (Virtual Private Line): This service seems to be offered > by a lot of ISPs using various networking techniques. The price point is > attractive however packets are forwarded only at best effort across the ISP's > network which means the quality of the service will directly reflect the > ISP's network performance.
Depending on how it's implemented, it might have QoS in the ISPs network. If the ISP has plenty of bandwidth, best effort is fine. > - WaveLength Services (oc3-10gig): This service seems to be cheaper then > traditional leased lines when comparing similar bandwidth. However, > availability is limited to on-net buildings. This solution meets my needs. > - MPLS based VPN solutions: Seems to be a good point to multipoint technology > with QOS offerings. However, the price seems to be around the same as > wavelength services for the amount of bandwidth we require. If the number of > data centers we were looking to connect was larger then this option would be > more attractive. This solution meets my needs. Wavelengths are often sold without fibre redundancy; virtual links usually (I hope) have some redundant back haul, at least. Redundancy isn't necessarily good - the redundant path might be really, really bad.
