ZyXEL Communications IES-1248-71, Руководство пользователя

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Chapter 56 Virtual Channel Management
IES-1248-71/73 User’s Guide
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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 for the factory default mapping.
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
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.
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>
<portlist> =
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>.
<vpi> =
The VPI setting can be 0 to 255.
<vci> =
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).
<encap> =
The type of encapsulation: llc, vcmux
<pvid> =
Type a PVID (Port VLAN ID) to assign to untagged frames
received on this PPVC.
<priority> =
This is the priority value (0 to 7) to add to incoming frames
without a (IEEE 802.1p) priority tag.
Figure 268 PPVC Set Command Example
ras> adsl ppvc set 5 8 35 llc 25 3