Fabric chip having trunked links

摘要

A fabric chip includes a plurality of port interfaces, in which each of the plurality of port interfaces includes a network chip interface (NCI) block having a port resolution module to determine which of the port interfaces is to receive a packet from the NCI block and a crossbar block communicatively coupled with each of the NCI blocks in the plurality of port interfaces. In addition, at least two of the plurality of port interfaces are to be connected to at least two port interfaces of another fabric chip as trunked links of a trunk. Moreover, the NCI blocks of the at least two of the plurality of port interfaces include a resource that keeps track of the port interfaces in the fabric chip that are connected to the trunk links of the trunk.

主权项

1. A fabric chip comprising:
a plurality of port interfaces, wherein each of the plurality of port interfaces includes a network chip interface (NCI) block having a port resolution module; a crossbar block communicatively coupled with each of the NCI blocks in the plurality of port interfaces; wherein a first port interface of the plurality of port interfaces is to receive a multi-cast packet, wherein the multi-cast packet contains a destination-node-chip mask; wherein the port resolution module of the first port interface is to implement a port resolution operation on the destination-node-chip mask to determine that the multi-cast packet is to be communicated through a pair of second port interfaces of the plurality of port interfaces, wherein the pair of second port interfaces are connected to two other port interfaces of another fabric chip as trunked links of a trunk, and wherein the NCI blocks of the pair of second port interfaces include a resource that keeps track of the pair of second port interfaces in the fabric chip that are connected to the trunked links of the trunk; and wherein the port resolution module of the first port interface is further to gather the multi-cast packet to be communicated to the pair of second port interfaces by collapsing bits that identify the pair of second port interfaces connected to the trunk links of the trunk into a single bit corresponding to one of the pair of second port interfaces; and communicate, from the first port interface, the gathered multi-cast packet to the one of the pair of second port interfaces.