Changing Virtual Channel Settings - ZyXEL Communications NetAtlas IES-1000 User Manual

LABEL
VC Profile Select a profile name to associate to this virtual channel.
DEFVAL DEFVAL is the name of the default profile for LLC encapsulation.
DEFVAL_VC is the name of the default profile for VC encapsulation.
The following fields displays the settings in the virtual channel profile you select in the VC
Profile field.
Encapsulation This field displays the type of encapsulation (LLC or VC).
AAL Mode This field displays the mode of the ATM Adaptation Layer (AAL).
Traffic Class This field displays the type of ATM traffic class: cbr (constant bit rate), rt-vbr (real-time
variable bit rate), nrt-vbr (non real-time variable bit rate), ubr (unspecified bit rate) or abr
(available bit rate).
Peak Cell Rate This is the maximum rate at which the sender can send cells. Divide the DSL line rate (bps) by
424 (the size of an ATM cell) to find the Peak Cell Rate (PCR).
Cell Delay This field displays the accepted tolerance of the difference between a cell's transfer delay and
Variation the expected transfer delay.
Tolerance
Minimum Cell This option is available for abr traffic class.
Rate
This is the minimum rate at which the sender can send cells.
Burst Tolerance This option is available for vbr traffic class.
This field displays the maximum number of cells that the port is guaranteed to handle without
any discards.
OK Click OK to save the changes and close this screen.
Cancel Click Cancel to discard all changes and close this screen.
7.5.3

Changing Virtual Channel Settings

To modify the virtual channel settings, select an entry in the Virtual Channel Configuration screen and click
Modify. Then refer to Table 7-16 for information on the fields in the Modify Virtual Channel Configuration
screen.
The Configuration Menus
Table 7-16 Virtual Channel Configuration: New
NetAtlas IES-1000 (AAM1008) EMS User's Guide
DESCRIPTION
7-23