Cabletron Systems 9032578-05 manual Service Class Definition, Creating a Virtual Channel

Service Class Definition

channel having its own traffic parameters. The name “virtual” implies that the connection is located in silicon instead of a physical wire. Refer to “Creating a Service Class Definition” on page 43 for information about defining a set of traffic parameters for a virtual channel.

Creating a Virtual Channel

To create a virtual channel, enter the following command in Configure mode:

Creates a virtual channel.

atm create vcl port <port list>

The following is a description of the parameter used to create a virtual channel:

port <port list> This parameter identifies the ATM port as well as the virtual channel identifier (vci) and virtual path identifier (vpi). Specify this parameter in the format: media.slot.port.vpi.vci

media Specifies the media type. This is at for ATM ports.

slot Specifies the slot number where the module is installed.

port Specifies the port on where you want to create a virtual channel.

vpi Specifies the Virtual Path Identifier. This number identifies a particular virtual path.

vci Specifies the Virtual Channel Identifier. This number identifies a particular virtual channel.

The combination of VPI and VCI is known as the VPI/VCI pair, and identifies the virtual channel.

Note: Do not specify a VPI of 0 with VCI numbers 0 through 31. These VPI/VCI pairs are reserved by the ATM forum for signaling and setup connections.

Service Class Definition

ATM provides the ability to specify traffic parameters for each virtual channel. These parameters define the bandwidth characteristics and delay guarantees. You can apply a different set of traffic parameters for each virtual channel. This provides network administrators more control of their network resources and more options in connections to accommodate different user needs.

42 SmartSwitch Router User Reference Manual