Chapter 13
Virtual Channel Management
This chapter shows you how to configure virtual channels. The configuration of virtual channels is the same for both the AAM1008 and SAM1008 network modules.
13.1About Virtual Channels
Defining channels (also called Permanent Virtual Circuits or PVCs) allows you to set priorities for different services or subscribers. You can define up to eight channels on each DSL port and use them for different services or levels of service. You set the PVID that is assigned to untagged frames received on each channel. You also set an IEEE 802.1p priority for each of the PVIDs. In this way you can assign different priorities to different channels (and consequently the services that get carried on them or the subscribers that use them).
For example, you want to give high priority to voice service on one of the AAM1008’s ADSL ports.
Use the Edit Static VLAN screen to configure a static VLAN on the AAM1008 network module for voice on the port.
Use the ADSL Edit Port Channel Setup screen to:Configure a channel on the port for voice service.
Set the channel to use the PVID of the static VLAN you configured.
Assign the channel a high priority.
13.1.1Super Channel
The
13.1.2LLC
LLC is a type of encapsulation where one VC (Virtual Circuit) carries multiple protocols with each packet header containing protocol identifying information. Despite the extra bandwidth and processing overhead, this method may be advantageous if it is not practical to have a separate VC for each carried protocol, for example, if charging heavily depends on the number of simultaneous VCs.
Virtual Channel Management |