3Com Router 3031, Command Reference Manual

Page: 348 / 838

348 C
HAPTER
4: L
INK
L
AYER
P
ROTOCOL
Description
Using the service ubr command, you can specify the service type of PVC as
Unspecified Bit Rate (UBR) and specify the related rate parameters.
By default, the service type is UBR after creating a PVC.
This command as well as the service vbr-nrt, service vbr-rt and service cbr
commands can be used to set the service type and service parameters of PVC. The
newly specified PVC service type will supersede the existing service type.
For the related commands, see service vbr-nrt, service vbr-rt, and service cbr.
Example
Display how to create a PVC named "3Com" with VPI/VCI as 1/101.
[3Com-Atm1/0/0] service pvc 3Com 1/101
Display how to specify the service type of the PVC as ubr and the peak cell rate of
ATM cell as 100,000Kbps.
[3Com-atm-pvc-Atm1/0/0-1/101-3Com] service ubr 100000
service vbr-nrt Syntax
service vbr-nrt output-pcr output-scr output-mbs
View
PVC view
Parameter
output-pcr: Peak rate of ATM cell output in Kbit/s. For the value ranges of this
parameter, see Value ranges of output-pcr.
output-scr: Sustainable rate of ATM cell output in Kbps. Its value ranges are the
same as those of output-pcr.
output-mbs: Maximum burst size of ATM cell output, i.e., the maximum cache size
of ATM cell output at the interface in cell number.
Description
Using the service vbr-nrt command, you can specify the service type of PVC as
Variable Bit Rate-Non Real Time (VBR-NRT) and specify the related rate
parameters.
By default, the service type is UBR after creating a PVC.
This command as well as the service ubr, service vbr-rt and service cbr commands
can be used to set the service type and service parameters of PVC. The newly
specified PVC service type will supercede the existing service type.
For the related commands, see service vbr-rt, service ubr, and service cbr.