ZyXEL Communications AAM1212, Руководство пользователя

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AAM1212 User’s Guide
100 Chapter 8 ADSL Port Setup
8.14 Alarm Profile Screen
Click Basic Setting and then xDSL Profiles Setup in the navigation panel and then Alarm
Profile to open the following screen.
Alarm profiles define ADSL port alarm thresholds. The AAM sends an alarm trap and
generates a syslog entry when the thresholds of the alarm profile are exceeded.
Use the top part of the screen (with the Add and Cancel buttons) to add or edit alarm profiles.
The rest of the screen displays the configured alarm profiles.
BT Burst Tolerance (BT) is the maximum number of cells that the port is guaranteed to
handle without any discards. BT applies with the vbr traffic class.
Modify Select a VC profile’s Select radio button and click Modify to edit the VC profile.
Delete Select a VC profile’s Select radio button and click Delete to remove the VC profile.
The rest of the screen is for PVC configuration.
Name When editing a profile, this is the name of this profile. When adding a profile, type a
name for the profile. You can use up to 31 ASCII characters; spaces are not
allowed.
Encap Select the encapsulation type ( LLC or VC ) for this port.
Class Select CBR (constant bit rate) to specify fixed (always-on) bandwidth for voice or
data traffic.
Select
UBR (unspecified bit rate) for applications that are non-time sensitive, such
as e-mail.
Select
VBR (real time variable bit rate) or NRT-VBR (non real time variable bit
rate) for bursty traffic and bandwidth sharing with other applications.
PCR Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the Peak Cell
Rate (PCR). This is the maximum rate at which the sender can send cells. PCR
applies with all of the ATM traffic classes. Type the PCR here.
CDVT Cell Delay Variation Tolerance (CDVT) is the accepted tolerance of the difference
between a cell’s transfer delay and the expected transfer delay. CDVT applies with
all of the ATM traffic classes. Type the CDVT here.
SCR The Sustained Cell Rate (SCR) sets the average cell rate (long-term) that can be
transmitted. Type the SCR, which must be less than the PCR. SCR applies with
the VBR traffic classes.
BT Burst Tolerance (BT) sets a maximum number of cells that the port is guaranteed
to handle without any discards. Type the BT here. BT applies with the VBR traffic
classes.
Add Click Add to save your changes to the AAM’s volatile memory. The AAM loses
these changes if it is turned off or loses power, so use the Config Save link on the
navigation panel to save your changes to the non-volatile memory when you are
done configuring.
Cancel Click Cancel to start configuring the screen again.
Table 19 VC Profile (continued)
LABEL DESCRIPTION