Released
Datasheet
PM73487 QRT
PMC-Sierra, Inc.
PMC-980618
Issue 3
622 Mbps ATM Traffic Management Device
1.5 5 Gbps to 20 Gbps Application Example - Seamless Growth
This section illustrates the modularity of the QRT (PM73487) and QSE (PM73488) architecture.
A 5 Gbps system can immediately be created (as shown in Figure 6 on page 7), and then be
upgraded to 10 Gbps (as shown in Figure 7 on page 7), or 20 Gbps (as shown in Figure 8 on page
8). Since all these systems are based on a single-stage switch fabric, the per-port cost for each sys-
tem will remain the same.
Port Card
Eight
155 Mbps
Interfaces
• Two QRTs (PM73487s)
Port Card
Eight
155 Mbps
Interfaces
• Two QRTs (PM73487s)
Switch Card
• One QSE (PM73488)
Port Card
Eight
155 Mbps
Interfaces
• Two QRTs (PM73487s)
Eight
Port Card
155 Mbps
Interfaces
• Two QRTs (PM73487s)
Figure 6. 5 Gbps ATM Switch Using 16 Dual S/UNIs, 8 QRTs, and 1 QSE
Eight
Port Card 1
155 Mbps
Interfaces
• Two QRTs (PM73487s)
Switch Card
• One QSE (PM73488)
•
•
•
Switch Card
Port Card 8
Eight
• One QSE (PM73488)
155 Mbps
Interfaces
• Two QRTs (PM73487s)
Figure 7. 10 Gbps ATM Switch Using 32 Dual S/UNIs, 16 QRTs, and 2 QSEs
7
PMC [ PMC-SIERRA, INC ]
