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NetAtlas IES-1000 (AAM1008) EMS User’s Guide
7-20
The Configuration Menus
7.5 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).
Super Channel
The IES-1000 forwards frames belonging to VLAN groups that are not assigned to specific channels to the super
channel. Enable the super channel option to allow a channel forward frames belonging to multiple VLAN groups
(that are not assigned to other channels). The super channel functions in the same way as the channel in a single
channel environment. One port can have only one super channel.
LLC
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.
VC Mux
VC Mux
is a type of encapsulation where, by prior mutual agreement, each protocol is assigned to a specific
virtual circuit, for example, VC1 carries IP, VC2 carries IPX, and so on. VC-based multiplexing may be dominant
in environments where dynamic creation of large numbers of ATM VCs is fast and economical.
7.5.1
The Virtual Channel Management Screen
View the current virtual channel setup in the
Virtual Channel Configuration
screen. Click
Configuration
,
ADSL
and
Virtual Channel Management
to display the screen as shown next.
Содержание IES-1000 - ANNEXE 7
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