Chapter 6 Managing Virtual Ports

Configuring Virtual Ports

Creating a virtual port

Note: Before you can create a new virtual port you must assign a VPI range. To do this you must first reduce the VPI range of the root virtual port. For more information about setting the VPI range for a virtual port, see Setting Virtual Port Parameters later in this chapter on page 69.

To control shaping use the vport create command.

Command:

M4-DS3s8:/>vport create <vport id> <VPI> [<bandwidth>]

Example:

M4-DS3s8:/>vport create 1.2.3 4 2358

Parameters:

<vport id>

The new virtual port identifier is an integer which isn’t yet used to

 

 

represent a virtual port on this physical port. The virtual port is in

 

 

the form <slot>.<port>.<virtual port number>.

 

<vpi>

The virtual path to be associated with this virtual port. This virtual

 

 

path must already exist on physical port <slot>.<port>

 

[<bandwidth>]

Applicable for DS3 modules only. An optional parameter to set

 

 

the bandwidth pool. The default value is root max bandwidth/

 

 

max number of vports per port. The bandwidth is measured in

 

 

CPS.

Traffic shaping for DS3 virtual ports

The M4-DS3 module supports traffic shaping (rate limit shaping) on its virtual ports. You can use shaping only on non-root virtual ports.

All aggregated traffic (SVCs, PVCs etc.) going out of the vport is shaped to the Peak Cell Rate (PCR) which is configured by the user for that vport. Rate limit shaping means that the DS3 module will adjust the transmitted traffic to a rate no higher than the user defines as the PCR for the vport. The DS3 module uses a 256k buffer to allow bursty traffic to be accumulated in the switch and then be sent out later.

In order to control shaping you use the vport create command. The bandwidth parameter defines the Peak Cell Rate (PCR) allowed on a vport and is defined in Cells Per Second (Cells/sec).

If you do not define a bandwidth value, then a default rate is assigned to that vport. The default rate is calculated as follows: the actual maximum bandwidth of the port divided by the maximum number of vports that can be defined on a port. The actual maximum bandwidth of a ports takes into account the overhead associated with the different cell mappings (ADM/PLCP). The maximum number of vports per port depends on the number of vpi bits configured for the module.

For example, if the number of VPI bits is 3 and we are using ADM then the default

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Avaya M770 ATM Switch User’s Guide

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Avaya M770 Configuring Virtual Ports, Creating a virtual port, To control shaping use the vport create command Command

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.

The M770 also boasts advanced security features, essential for protecting sensitive communications within a business. It employs encryption protocols to safeguard data and voice transmissions, ensuring that corporate information remains secure from potential cyber threats. This focus on security is increasingly critical in today's interconnected world, where data breaches can have devastating consequences.

Another notable characteristic of the Avaya M770 is its integration capabilities. The device can seamlessly connect with Avaya’s suite of applications and third-party solutions, enabling businesses to create a unified communications environment tailored to their specific needs. This interoperability allows for a more streamlined workflow, enhancing productivity within the organization.

Furthermore, the M770 features intuitive management tools that simplify the administration of telephony systems. With a user-friendly interface, IT administrators can easily monitor performance, manage resources, and troubleshoot issues. This ease of use reduces the time and effort needed for system management, allowing IT teams to focus on strategic initiatives.

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.