Cabletron Systems 9A100 - Manual (Page 55)

SmartSwitch 9A100 User Guide 4-13
Switch Administration PVC Connections
4.5.2 Point-to-Multipoint PVCs
Instructions in this section describe how to set up a point-to-multipoint connection through your SmartSwitch 9A100.
Example: Create a point-to-multipoint connection between a broadcasting workstation on port A1 and three other
workstations connected to ports B2, B3, and C1.
1. Use add trafficdescriptor to create two new traffic descriptors, one for the forward direction,
the other for the backward direction. For this example, for the forward traffic descriptor, we select
UBR and accept the defaults.
SmartSwitch # add trafficdescriptor
TrafficType(UBR) :
TrafficDescriptorType(11) :
PCRCLP01(100) :
PCRCLP0(0) :
SCRCLP01(0) :
SCRCLP0(0) :
MBSCLP01(0) :
MBSCLP0(0) :
QOSCLASS(0) :
AalType(5) :
md1 #
However, on a point-to-multipoint connection there should be no traffic in the backward direction, so we define the
backward traffic descriptor with its Cell Loss Priorities set to zero (0).
md1 #add trafficdescriptor
TrafficType(UBR) :
TrafficDescriptorType(11) :
PCRCLP01(100) :0
PCRCLP0(0) :
SCRCLP01(0) :
SCRCLP0(0) :
MBSCLP01(0) :
MBSCLP0(0) :
QOSCLASS(0) :
AalType(5) :
SmartSwitch #
2. Use show trafficdescriptor to obtain the new traffic descriptors’ index numbers.
SmartSwitch # show trafficdescriptor
==================================================================================
TD# Traff Desc QoS Peak Cell Rate Sust Cell Rate Max Burst Size Aal
Type Type (Kb/s) (Kb/s) (Kb/s) Type
CLP_0 CLP_0+1 CLP_0 CLP_0+1 CLP_0 CLP_0+1
==================================================================================
2 CBR 2 1 0 100 0 0 0 0 5
6 UBR 11 0 0 100 0 0 0 0 5
7 UBR 11 0 0 0 0 0 0 0 5
176 NRTVBR 2 1 0 1585 0 0 0 0 5
SmartSwitch #
In the example above, traffic descriptor six (6) will be used in the forward direction, and traffic descriptor seven (7)
will be used in the backward direction.