Criteria for identifying network frames

摘要

Disclosed are various embodiments of a network switch for storing a prefix address and a mask corresponding to the prefix address, the prefix address and the mask each representing a binary value, the mask representing a number of significant bits of an address beginning with a most significant bit. The network switch obtains a network frame via one of a plurality of network interfaces, the network frame comprising a network address in a header of the network frame, the network address being a binary value representing a physical address of a network interface device. The network switch determines a truth value associated with a comparison of a mask number of bits of the prefix and network addresses, the truth value indicating an equivalence of the comparison. In response to the truth value, the network switch may initiate at least one action associated with the network frame.

主权项

1. A network switch, comprising:
circuitry configured to:
store a plurality of matching criterion in an action table, each matching criteria including at least one prefix address, a mask corresponding to the at least one prefix address, and a set of actions;obtain a network frame via a network interface, the network frame including a network address in a header of the network frame, the network address being a physical source address of a network interface device;determine whether the network frame matches at least one prefix address of a matching criteria and a mask of the matching criteria;determine whether the network frame matches at least one prefix address and a mask of another matching criteria in the action table; andinitiate a set of actions corresponding to the matching criteria for the network frame if the network frame matches the at least one prefix address and the mask of the matching criteria or a set of actions corresponding to the another matching criteria for the network frame if the network frame matches the at least one prefix address and the mask of the another matching criteria.