User Manual

Enterasys X-Pedition User Reference Manual 95
Service Profile Definition
rt-vbr Real-Time Variable Bit Rate. This service category provides a guaranteed
constant bandwidth (specified by the SCR), but also provides for peak
bandwidth requirements (specified by the PCR). This service category
requires the PCR, SCR, and MBS options and is intended for applications
that can accommodate bursty real-time traffic such as compressed voice or
video.
pcr Specifies the Peak Cell Rate, which defines the maximum cell transmission rate. The
default is 353207 cells/sec. This parameter is valid for CBR, rtVBR, nrtVBR, and
UBR service categories. This parameter is optional for UBR.
pcr-kbits Specifies the Peak Cell Rate, which defines the maximum cell transmission rate,
expressed in kbits/sec. The default is 149759 kbits/sec (353207 cells/sec). This is the
same as PCR, but is expressed in kbits/sec, and therefore may be a more convenient
form. However, since the natural unit for ATM is cells/sec, there may be a difference
in the actual rate because the kbit/sec value may not be an integral number of cells.
This parameter is valid for CBR, rtVBR, nrtVBR, and UBR service categories.
scr The Sustainable Cell Rate. This rate specifies the average cell rate, expressed in
cells/sec. The default is 0 cells/sec. This parameter is valid only for rtVBR and
nrtVBR service categories.
scr-kbits The Sustainable Cell Rate in kbts/sec. This rate specifies the average cell rate,
expressed in kbits/sec. The default is 0 kbits/sec. This is the same as SCR, but is
expressed in kbits/sec, and therefore may be a more convenient form. However, since
the natural unit for ATM is cells/sec, there may be a difference in the actual rate
because the kbit/sec value may not be an integral number of cells. This parameter is
valid only for rtVBR and nrtVBR service categories.
mbs Specifies the Maximum Burst Size in cells. MBS specifies how many cells can be
transmitted at the Peak Cell Rate You may specify between 2 and 255 cells—the
default is 0 cells. This parameter is valid only for rtVBR and nrtVBR service
categories.
encaps The encapsulation scheme used to transport multi-protocol data over the AAL5 layer.
This scheme will be LLC-MUX (logical link control based multiplexing) or vc-mux
(virtual channel based multiplexing). The default scheme is LLC-MUX.
oam OAM (Operation, Administration, and Management) loopback cells are used to
provide loopback capabilities and confirm whether a VC connection is up. F5 OAM
and end-to-end segments are supported, which provides loopback capabilities on a
VC connection level. This parameter turns OAM ON or OFF on the PVC. The
default is OFF. OAM OFF means that the XP responds to F5 OAM requests, but will
not generate F5 OAM responses.
oam-f5-type
Designates whether the OAM loopback cells have meaning in the current segment
(the default) or end-to-end.