Abstract: Systems (100) and methods (800) for routing packets within a Multi-Channel Communications Device (“MCCD”). The methods involve receiving a first packet (300) which has a first classification level and a second packet (300) which has a second different classification level. Subsequently, modified first and second packets (400) are generated by inserting routing headers (402) between data link layer protocol headers (308, 308?) and network layer protocol headers (310, 310?) of the first and second packets. Each routing header comprises an error-detecting code (512) and routing information (502) describing a route within the MCCD along which the first or second packet is to travel. The routing headers are then used by a single packet router (160) to simultaneously route the modified first and second packets through the MCCD to at least one port of a plurality of output interface ports (116, 1901, . . . , 190N) of the MCCD.

Abstract: Systems (100) and methods (300) for synchronizing operations of processors (102, 104). The methods involve: receiving by an electronic circuit (106) a first request (250) from a first processor for writing first data (262) to or reading first data from a first address (260) in a first data store (122), and subsequently a second request (252) from a second processor for writing second data (266) to or reading second data from a second address (264) in a second data store (124); comparing values of the first and second addresses to each other and values of the first and second data to each other; and concurrently communicating an asynchronous ready signal (254) from the electronic circuit to the processors when the values of the addresses and data respectively match each other. The asynchronous ready signal causes operations of the processors to be synchronized in time with each other.

Abstract: Systems (100) and methods (800) for routing packets within a Multi-Channel Communications Device (“MCCD”). The methods involve receiving a first packet (300) which has a first classification level and a second packet (300) which has a second different classification level. Subsequently, modified first and second packets (400) are generated by inserting routing headers (402) between data link layer protocol headers (308, 308?) and network layer protocol headers (310, 310?) of the first and second packets. Each routing header comprises an error-detecting code (512) and routing information (502) describing a route within the MCCD along which the first or second packet is to travel. The routing headers are then used by a single packet router (160) to simultaneously route the modified first and second packets through the MCCD to at least one port of a plurality of output interface ports (116, 1901, . . . , 190N) of the MCCD.