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12.1 About Virtual Channels
See the web configurator chapter on virtual channel management for background information on virtual channels.
12.2 Virtual Channel Profile Commands
Use the following commands to configure virtual channel profiles.
12.2.1
Set Virtual Channel Profile Command
Syntax:
lcman port
ras>
<opt_param>
where
<prof_name>
<llc|vc>
<5>
=
<cbr|vbr|ubr>
<opt_param>
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 line cards in the Integrated Ethernet Switch.
Virtual Channel Management
Virtual Channel Management
This chapter shows you how to use commands to configure virtual channels.
vcprofile set <prof_name> <llc|vc> <5> <cbr|vbr|ubr>
=
The name of the virtual channel profile (up to 31 ASCII characters). You cannot
change the DEFVAL or DEFVAL_VC profiles.
=
The type of encapsulation (llc or vc).
The ATM Adaptation Layer (AAL 5).
=
The type of ATM traffic class: cbr (constant bit rate), vbr (variable bit rate), or ubr
(unspecified bit rate).
=
These are the ATM traffic settings: <pcr> <cdvt>. If you use vbr, you must also
set <scr> and <bt>. * sets the default value.
<pcr> = Peak Cell Rate (0 to 300000 or *), the maximum rate (cells per second) at
which the sender can send cells.
<cdvt> = Cell Delay Variation Tolerance 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).
<scr> = 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.
<bt>
= 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.
ALC1224 User's Guide
Chapter 12
12-1
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Table of Contents
Troubleshooting
