Priority-Based Pvcs; Ppvc Set Command; Ppvc Member Set Command; Figure 268 Ppvc Set Command Example - ZyXEL Communications IES-1248-71 User Manual

56.4 Priority-based PVCs

A PPVC (Priority-based PVC) allows you to give different priorities to PVCs that are
members of the same VLAN.
The IES-1248 uses eight priority queues (also called levels) for the member PVCs. The system
maps frames with certain IEEE 802.1p priorities to a PVC with a particular priority queue. See
Chapter 16 on page 121
Use these commands to configure PPVCs and add and remove member PVCs.

56.4.1 PPVC Set Command

Syntax:
ras> adsl ppvc set <portlist> <vpi> <vci> <encap> <pvid> <priority>
where
<portlist>
<vpi>
<vci>
<encap>
<pvid>
<priority>
This command creates a PPVC.
The following example creates a PPVC with VPI 8 and VCI 35 for port 5. The PPVC uses llc
encapsulation and default VID 25. Any frames received without an IEEE 802.1p priority tag
will be assigned a priority of 3. The IES-1248 uses this PVC channel internally. This PVC is
not needed on the subscriber's device.

Figure 268 PPVC Set Command Example

ras> adsl ppvc set 5 8 35 llc 25 3

56.4.2 PPVC Member Set Command

Syntax:
ras> adsl ppvc member set <portlist> <vpi> <vci> <member vpi> <member vci>
<DS vcprofile[,US vcprofile]> <level>
IES-1248-71/73 User's Guide
for the factory default mapping.
You can specify a single ADSL port <1>, all ADSL ports <*> or
=
a list of ADSL ports <1,3,5>. You can also include a range of
ports <1,5,6~10>.
The VPI setting can be 0 to 255.
=
The VCI setting can be 32 to 65535 if the vpi is 0 or 1 to 65535
=
if the vpi is not 0. This PVC channel is for internal use. The
operator does not need to create this PVC on the subscriber's
device (the CPE).
The type of encapsulation: llc, vcmux
=
Type a PVID (Port VLAN ID) to assign to untagged frames
=
received on this PPVC.
This is the priority value (0 to 7) to add to incoming frames
=
without a (IEEE 802.1p) priority tag.
Chapter 56 Virtual Channel Management
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