ZyXEL Communications IES-1248 VDSL-SWITCH User Manual page 260

IES-1248 User's Guide
[cdvt]
<vbr(rt-
vbr)|nrt-vbr> =
<scr>
<bt>
The command creates a virtual channel profile. After you create a virtual channel profile, you can
vcprofile set
assign it to any of the ADSL ports on any of the ADSL IES-1248s in the IES-1248.
The following example creates a virtual channel profile named gold that uses LLC encapsulation. It uses constant
bit rate and has the maximum rate (peak cell rate) set to 300,000 cells per second. The acceptable tolerance of the
difference between a cell's transfer delay and the expected transfer delay (CDVT) is set to 5 cells.
ras> adsl vcprofile set gold llc cbr 300000 5
The following example creates a virtual channel profile named silver that uses VC encapsulation. It uses real-time
variable bit rate and has the maximum rate (peak cell rate) set to 250,000 cells per second. The acceptable tolerance
of the difference between a cell's transfer delay and the expected transfer delay (CDVT) is set to 5 cells. The
average cell rate that can be transmitted (SCR) is set to 100,000 cells per second. The maximum number of cells
that the port is guaranteed to handle without any discards (BT) is set to 200.
ras> adsl vcprofile set silver vc vbr 250000 5 100000 200
The following example creates a virtual channel profile named economy that uses LLC encapsulation. It uses
unspecified bit rate and has the maximum rate (peak cell rate) set to 50,000 cells per second. The acceptable
tolerance of the difference between a cell's transfer delay and the expected transfer delay (CDVT) is set to 100
cells.
ras> adsl vcprofile set gold llc cbr 50000 100
39.2.3 Delete Virtual Channel Profile Command
Syntax:
adsl vcprofile delete <vcprofile>
where
<vcprofile>
You cannot delete a virtual channel profile that is assigned to any of the ADSL ports. Assign a different profile to
any ADSL ports that are using the profile that you want to delete, and then you can delete the profile.
The following example deletes the silver virtual channel profile.
ras> adsl vcprofile delete silver
39-2
= Cell Delay Variation Tolerance is the accepted tolerance of the difference between
a cell's transfer delay and the expected transfer delay (number of cells). 0 to 255
cells or * (means 0).
The real-time (vbr) or non real-time (nrt-vbr) Variable Bit Rate ATM traffic class.
= The Sustained Cell Rate sets the average cell rate (long-term) that can be
transmitted (cells per second). SCR applies with the vbr traffic class.
= Burst Tolerance this is the maximum number of cells that the port is guaranteed to
handle without any discards (number of cells). BT applies with the vbr traffic
class.
=
The name of the virtual channel profile (up to 31 ASCII characters). You cannot
delete the DEFVAL or DEFVAL_VC profiles.
Virtual Channel Management