The geographic protection of carriers’ enterprise community companies varies considerably. Not each provider connects to each metropolis of their prospects’ networks, and never all companies can be found all over the place.
When narrowing down the universe of potential suppliers, enterprises should first think about how their geographic necessities overlap a possible service supplier’s bodily community. They then should decide if the precise knowledge companies they require are enabled at every of the service suppliers’ PoPs.
TeleGeography’s WAN Providers Protection evaluation—a part of our Cloud and WAN Analysis Service—examines provider community connectivity and repair availability from a geographic perspective.
This is a snippet of that evaluation, adopted by some helpful definitions.
International Enterprise Middle Product Comparability
Layer 3 MPLS IP VPN stays the commonest enterprise-wide space community product throughout 165 key enterprise middle metros.
In these metro areas, carriers current over 3,000 choices of this service.
EoMPLS is the second commonest service in these areas, with over 2,500 choices, and DIA is third, with over 2,300 choices. EVPN is obtainable over 2,000 occasions in these metros, and DWDM is obtainable over 1,800 occasions.
Variety of Choices of Eight Enterprise Merchandise throughout 165 Key Enterprise Facilities
Product Geographic Comparability
Every of those 5 enterprise merchandise (plus SDH, EoSDH, and T-E companies) are most generally out there in Europe, adopted by the U.S. and Canada, after which Asia.
Variety of Choices of Prime Providers by Area in Key Metros
However what is the distinction between these eight merchandise?
Listed below are the definitions we use in our analysis.
Any-to-any contains multipoint-to-multipoint or IP companies usually offered as enterprise merchandise.
Layer 3 IP digital personal community (VPN), is predicated on an MPLS community. IP VPN is a layer 3 IP-routed service that enables prospects to arrange a community of safe, personal connections that tunnel over the general public IP or provider community.
Carriers supply VPN starting at low capacities reminiscent of 64 Kbps all the way in which as much as 10 GigE (10,000 Mbps). As a result of VPN could be routed over the general public IP community, and it permits for various entry choices, it’s usually regarded as probably the most geographically ubiquitous community product.
VPN is often regarded as probably the most geographically ubiquitous community product.
A key attribute of VPN over MPLS is the flexibility to mark essential packets with queuing directions primarily based on their precedence. This prioritization known as class of service (CoS).
For instance, a buyer pays an additional cost along with the port lease to have all of its voice and video packets marked with excessive precedence CoS tags that enable these packets to skip to the entrance of the road at crowded routers within the core community.
Devoted web entry (DIA) is probably the most fundamental IP service out there to retail prospects. It’s merely an always-on, uncontended pipe to and from the general public Web.
As with VPN, the entry choices are typically huge and can decide the up/down pace ratios of the DIA service. DIA is offered as a port within the provider PoP, however shouldn’t be confused with entry applied sciences reminiscent of DSL.
In contrast to shopper grade IP service usually offered to smaller companies, DIA comes with service degree agreements (SLAs) and speeds that the provider ensures is not going to differ with native utilization charges, as is the case with a contended service.
Ethernet digital personal community (EVPN) is the most recent enterprise answer to emerge in long-haul Ethernet merchandise. This layer 2 VPN service was previously known as VPLS in our Cloud and WAN Analysis Service, which is how some carriers nonetheless confer with it. It should not be confused with a legacy product of the identical title and—so far as TeleGeography analysis is worried—is at all times a port-based any-to-any service.
For a lot of carriers, the presentation of EVPN to the shopper is similar to VPN.
EVPN, nevertheless, requires an Ethernet native loop, which can restrict its software geographically. EVPN primarily permits the shopper to carry the LAN to the supplier edge, the place they’ll then join the LAN on to the huge space community.
EVPN permits refined prospects to create their very own digital paths over the provider’s MPLS core or multiservice platform, subsequently providing the final word in tunneling safety because the buyer can have management over routing inside the cloud. Most carriers supply a CoS system for EVPN just like that present in layer 3 VPN.
Lengthy Haul Ethernet Personal Line
This class contains point-to-point or point-to-multipoint Ethernet merchandise, excluding EVPN.
Ethernet over MPLS (EoMPLS) is a digital personal line that’s tunneled by way of the MPLS community cloud.
Some carriers promote this in two methods, both as a point-to-point service that may merely substitute legacy TDM personal traces, or as a hub and spoke service that enables one central workplace to speak with many satellites, however doesn’t enable communication among the many satellite tv for pc places of work. In both case, the layer 2 service is converted the community cloud, however approximates the safety and privateness of a standard personal line.
Ethernet over SDH/SONET (EoSDH/SONET) is the flexibility to supply the scalability and interface of Ethernet over an SDH/SONET line.
This service could be offered in each protected and unprotected kinds, just like conventional SDH/SONET. There are a number of benefits to EoSDH/SONET service, together with its means to permit the shopper to attach the LAN on to the personal line somewhat than engineer a conversion to SDH/SONET. The second key benefit is that it permits the shopper to purchase in smaller Ethernet increments reminiscent of 10 Mbps somewhat than buying 5 E-1s or a DS-3 with 35 Mbps of extra capability.
Lengthy Haul Personal Line
The companies listed below this part symbolize the legacy personal line applied sciences.
T/E Service is a TDM T-1 (1.5 Mbps) or T-3/DS-3 (45 Mbps) line within the U.S., Canada, and Japan and an E-1 (2 Mbps) or E-3 (34 Mbps) line elsewhere. That is nonetheless a well-liked product for patrons with smaller bandwidth necessities or fewer websites.
Synchronous Digital Hierarchy (SDH) and Synchronous Optical Networking (SONET) are the legacy TDM merchandise. SONET is used within the U.S. and Canada and SDH in the remainder of the world.
They’re offered for bigger bandwidth personal traces and could be offered as a linear connection, or extra usually as a full-circuit protected service that features a redundant various line for restoration.
Dense wavelength division multiplexing (DWDM) is a product that’s extra usually seen within the wholesale provider market, since it’s presently offered primarily as 10 Gbps (or bigger) point-to-point connections.
Some enterprise prospects with very giant bandwidth wants (for instance, a headquarters needing to connect with a backup or knowledge middle) might select this product. DWDM is often offered as a linear or unprotected product.
When a 10G wave is protected, it could be offered as an STM-64/OC-192 SDH/SONET line. Additionally falling into this class is Ethernet over DWDM (EoDWDM) which is solely a DWDM wavelength with an Ethernet interface.
Some carriers enable prospects to buy incremental capability. For instance, a buyer might buy a GigE that’s delivered over a 10G DWDM wavelength. In some circumstances, retail prospects can buy a full 10GigE personal line circuit.