PVC Addendum to the 9A686-04/9A656-04 Configuration Guide
9033126-01
Page 10 of 43
Traffic Descriptors for the 9A686-04 and 9A656-04
If the user is creating a PVC for the first time, the user must also create a traffic descriptor. A traffic
descriptor profile instructs the two interfaces, or sides, of the PVC as to what type of ATM connection
they will support. For example, in the PVC created later on in this document, the user desires a Variable
Bit Rate (VBR) connection between the two interfaces. In addition, a Peak Cell Rate (PCR) of 1000 cells
a second, and a Sustained Cell Rate (SCR) of 500 cells a second, with a Maximum Burst Size of 75. All
of this information is configured in the traffic descriptor. Then, when the PVC is created, this traffic
descriptor is assigned to the PVC. This traffic descriptor can then be assigned to any other number of
PVCs that the user requires, or new traffic descriptors that provide different levels of QoS (CBR, ABR,
etc.) may be created.
Table 8
provides a detailed listing of the 15 traffic profiles supported by the
9A686-04 and 9A656-04.
Creating a PVC across the CTM Backplane
This section provides a basic example of creating a PVC across the CTM backplane. In this case, two
PVCs must be configured. Refer to
Figure 4
.
Figure 4 Creating a PVC Across Multiple Modules
In this example, the user created a PVC from port 3 of ANIM 1 of the 9A686-04 installed in slot 1 of the
chassis, to port 1 of ANIM 1 of the 9A686-04 installed in slot 14 of the chassis.
NOTE
The user MUST create at least one traffic descriptor before a PVC can be created.
Port 4
Port 3
Port 2
ANIM 1
Port 1
Port 3
Port 2
ANIM 2
Port 1
Port 3
Port 2
ANIM 3
Port 1
Port 3
Port 2
ANIM 4
Port 1
CTM Backplane
Port 3
Port 2
ANIM 1
Port 1
Port 3
Port 2
ANIM 2
Port 1
Port 3
Port 2
ANIM 3
Port 1
Port 3
Port 2
ANIM 4
Port 1
9A686-04 Installed in Slot 1
9A686-04 Installed in Slot 14
A
B
CTM
Interface
CTM
Interface
C
