622 Adapters

Performance Report on ATM adapters, Part No. A5483A, A5513A, and A5515A 09/30/99 4

Multiple Adapter Configuration Test Results

For a Classical IP interface with MTU size of 9180 bytes, the TCP throughput in outbound

direction varies almost linearly with the number of adapters, for up to eight 622 adapters and 12

155 Adapters for V2500 and N4000 platforms. See Figures 2 and 3 below.

Figure 2: TCP Outbound Throughput Scalability (N4000: 8 CPUs, 622 Adapters, Classical IP)

Figure 3: TCP Throughput Scalability (V2500: 8 CPUs, 155 Adapters, Classical IP)

TCP Throughput Scalability with Number Of 155 Adapters (V2500)

500

1000

1500

2000

2500

3000

3500

1 2 4 6 8 10 12

Number of Adapters

TCP Throughput Mbps

CPU Utilization %

Outbound Throughput

Inbound Throughput

Bidirectional Throughput

Outbound Utilization

Inbound Utilization

Bidirectional Utilization

TCP Outbound Throughput with Number of 622 Adapters (N4000)

500