Silicom Ltd. Connectivity Solutions

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Figure 2 illustrates example of functional block diagram of content aware TAP:

Packets received in port A and meet rule are directed to ports B nad C (TAP), other packets are directed to port B (Bypass).

Packets received in port B and meet rule are directed to ports F and A (TAP), other packets are directed to port A (Bypass).

Director

– Content Filtering NIC

Silicom’s Ethernet content aware provides intelligent packet redirection capability where rules specify which packets are directed to

the host or dropped.

Figure 3: Content Aware Filtering NIC Functional Block Diagram

Figure 3 illustrates functional block diagram of content aware TAP:

Packets received in port A and meet rule, direct to port C and D. Packets received in port A and do not meet rule are dropped.

Packets received in port B and meet rule, direct to ports E and F. Packets received in port B and do not meet rule are dropped.

Director

– Load balancing (*Future Support)

Silicom’s Ethernet content aware director provides a load balancing of the traffic coming from 2 100G external ports (A, B). The

traffic is balanced, based on a defined hash configuration, to the 4x 50G internal interfaces (C,D,E and F) that are going to the host

Figure 4: Load Balancing Functional Block Diagram

If there is external port that is heavily loaded the traffic will go into the 4 internal interfaces with balanced load. An ISL tag is added

to all incoming packets, it enables the host to know the source port, and the ISL tag is removed from packets that are sent back

from the host.