Chapter 8 Permanent Virtual Connections (PVCs and PVPs)

Managing PVP Connections

Managing PVP Connections

In some network configurations there may be a need to configure a Permanent Virtual Path (PVP) which is sometimes called Tunneling. The PVP or the Tunnel is created to cross as many ATM switches as needed, so the remote ends would see each other as if they are adjacent. This is done by creating Virtual Ports on the remote switches using a specified VPI, and this VPI is switches through out the ATM network.

Vport A.1

PVP X.1-X.4

PVP Y.4-Y.5

PVP Z.5-Z.2

Vport B.2

Switch A

Switch B

The above example shows a direct connection between switches A and B. Two vports were created, A.1 (vport on switch A using VPI 1) and B.2 (vport on switch B using VPI 2). The Virtual Path Connection (VPC) between the two switches is constructed using 3 PVPs in switches X, Y, and Z: X.1 - X.4, Y.4 - Y.5, and Z.5 - Z.2 respectively. In this example, a letter (A, B, X, Y, Z) represents a switch port. The number after the decimal is the VPI that is used. Note that if there is no other vport between A and X, or B and Z (i.e vports A.0 and B.0 are disabled), then switches A and B would not know that switches X, Y, and Z exist.

Note: Before you attempt to set up a PVP you will need to configure two things:

1.Define the VPI range that is used for VP switching. By default, all VPIs are used for VC switching, and VP switching is disabled. For configuring VPC VPI range refer to “Managing VPI range for VP switching” on page 99.

2.Define the VPIs that are used to Signalled VPs, and the rest are used for Permanent VPs. For configuring signaled VPC VPI range refer to “Setting Virtual Port Parameters” on page 69.

Avaya M770 ATM Switch User’s Guide

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Avaya M770 manual Managing PVP Connections

M770 specifications

The Avaya M770 is a highly advanced media processor that is part of Avaya's robust suite of communication solutions designed for enterprise environments. This powerful device caters to the needs of modern businesses, providing an efficient platform for managing voice, video, and data communications.

One of the standout features of the Avaya M770 is its high-density processing capability. The device can handle a significant volume of calls concurrently, which makes it an ideal solution for large organizations requiring a reliable communication backbone. The M770 supports a variety of codecs, ensuring high-quality audio and video transmission, which is pivotal for maintaining clarity during communication.

Incorporating cutting-edge technologies, the Avaya M770 is built upon a scalable architecture that allows for easy expansion as business needs evolve. This scalability means organizations do not have to invest in new equipment every time they grow; they can simply add additional resources to the existing system. This makes the M770 a cost-effective solution in the long run.

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In conclusion, the Avaya M770 is a comprehensive media processing solution that combines scalability, security, and ease of integration to meet the demands of contemporary enterprises. With its ability to support high-density communications and its advanced management capabilities, it serves as a critical asset for businesses looking to enhance their communication infrastructure.