MPLS for Metropolitan Area Networks

Wide area network

---

Metro Ethernet

Connect residential subscribers or businesses to the Internet. Provide connectivity to public or private cloud data centers.

Покупки по категориям

Provide multicast delivery used by business customers for video conferencing, and used by residential subscribers for IPTV and video applications. Figure 2 shows the available transport technologies in a Metro Ethernet network.

MPLS for Metropolitan Area Networks

Though multiple network functions converge on a single chassis, all the functions run independently, benefiting from operational, functional, and administrative separation. Partitioning a physical system, such as Broadband Network Gateway BNG , into multiple independent logical instances ensures that failures are isolated. The partitions do not share the control plane or the forwarding plane, but only share the same chassis, space, and power.

This means failure in one partition does not cause any widespread service outage. Flexibility— Supports a wide variety of services and transports. Reliability— Ethernet operations, administration, and maintenance OAM performs path discovery, detects and reports connection failures, and measures performance.

Special offers and product promotions

Scalability— Supports speeds from one Mbps to 10 Gbps. Customers can increase bandwidth dynamically, and often without the need to purchase or install new equipment. Table 1 lists the features and benefits of Juniper Networks Metro Ethernet solutions.

It provides service flexibility and scaling of the MAN where you can terminate Metro Ethernet services at any point in the network. These routers offer high performance for converged residential, mobile, and Metro Ethernet services on a single platform.

With cloud exchange networks shown in Figure 3 , you can augment Ethernet resources by sharing them with multiple customers. Instead of committing bandwidth to each customer, you can dynamically allocate bandwidth as needed enabling you to maximize network utilization and reduce infrastructure costs.

SDH-based deployments are useful when there is an existing SDH infrastructure already in place, its main shortcoming being the loss of flexibility in bandwidth management due to the rigid hierarchy imposed by the SDH network. MPLS-based deployments are costly but highly reliable and scalable and are typically used by large service providers. Familiar network domains are likely to exist regardless of the transport technology chosen to implement metropolitan area networks: Much of the functionality of Ethernet MANs such as virtual private lines or virtual private networks is implemented by the use of Ethernet VLAN tags that allow differentiation of each part of the network.

Logical differentiation of the physical network helps to identify the rights that the traffic has and to ease the management of hosts' access rights with respect to other users and networks. For each deployment situation the benefit versus cost of MPLS must be weighed carefully, so if not implemented on a carrier's distribution network there might be more benefit for MPLS the core network. In some situations the cost may not warrant the benefits, particularly if sub 50ms convergence time is already being achieved with pure Ethernet.

Some service providers deployed metro Ethernet networks using fixed wireless technology. Carriers have more recently [ when? Metro Wireless providers in many cases are able to produce shorter installation times due to less permitting and procedure necessary. Many consumers now [ when? Wireless is also commonly used as a true redundant path to the Internet.

Upcoming Events

In late January , Windstream announced it would begin offering metro Ethernet service to small and medium business customers. In May , Comcast announced its own metro Ethernet services to business customers in the United States. From Wikipedia, the free encyclopedia. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources.

Unsourced material may be challenged and removed.

• Beguiled (Gate Deadlock Series Book 2)
• Evaluation dans la formation des enseignants (Evaluer) (French Edition)
• Into The Fire
• Zwielicht Op.39 No.10 - Score and Parts
• Galerie Chartier Presents a collection of cutting edge artists of all mediums (Galerie Chartier (a collective of cutting edge artists of all genres) Book 2)