ZyXEL Communications IES-1248 VDSL-SWITCH User Manual page 112

IES-1248 User's Guide
LABEL
SCR/MCR The Sustained Cell Rate (SCR) sets the average cell rate (long-term) that can be transmitted. SCR
applies with the vbr traffic class.
Minimum Cell Rate (MCR) is the minimum rate at which the sender can send cells.
BT/NRM 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/MCR 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/NRM 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 IES-1248's volatile memory. The IES-1248 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.
11.12.4 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 IES-1248 sends an alarm trap and generates a syslog entry
when the thresholds of the alarm profile are exceeded.
11-18
Table 11-6 VC Profile
DESCRIPTION
ADSL Port Setup