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Chapter 66 Virtual Channel Commands

IES-1248-51V User’s Guide

517

66.2.1 Set Virtual Channel Profile Command

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.

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

adsl vcprofile set

<vc|llc><vbr(rt-

vbr)|nrt-vbr>

Creates a virtual channel profile. After you create a virtual channel

profile, you can assign it to any of the ADSL ports on any of the

ADSL IES-1248-51V in the IES-1248-51V.

vbr(rt-vbr)|nrt-vbr: The Real-Time Variable Bit Rate (RT-VBR)

or Non Real-Time (NRT-VBR) Variable Bit Rate ATM traffic class.

pcr: Peak Cell Rate (PCR) is the maximum rate (150 to 300000

cells per second) at which the sender can send cells.

cdvt: Cell Delay Variation Tolerance (CDVT) is the accepted

tolerance of the difference between a cell’s transfer delay and the

expected transfer delay measured in number of cells. Enter from 0

to 255 or * (means 0).

scr: The Sustained Cell Rate (SCR) sets the average cell rate

(long-term) that can be transmitted (measured in cells per

second). SCR applies to the VBR traffic class.

bt: Burst Tolerance (BT) is the maximum number of cells that the

port is guaranteed to handle without any discards (number of

cells). BT applies to the VBR traffic class.

H/H

adsl vcprofile delete

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.

H/H

Table 195 Virtual Channel Profile Commands

COMMAND DESCRIPTION P

Figure 220 Set Virtual Channel Profile Command Example 1

ras> adsl vcprofile set gold llc cbr 300000 5

1 2 ... 512 513 514 515 516 517 518 519 520 521 522 ... 653 654

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