Logical L3 Processing for L2 Hardware Switches

摘要

A method for learning a MAC address of an end machine that is logically connected to a logical network is described. The method receives configuration data for implementing a distributed logical router having different logical ports each of which is associated with a logical port of a logical switch. The method receives a packet through a first logical port of the logical router that has a destination IP address associated with a particular logical switch that is associated with a second logical port of the logical router. In order to learn the MAC address of the end machine, the method sends a first broadcast packet with a first source MAC address to a first set of forwarding elements that implements the particular logical switch, and sends a second broadcast packet with a second source MAC address to a second set of forwarding elements that also implements the particular logical switch.

主权项

1. For a managed forwarding element (MFE) operating on a host machine, a method for learning a media access control (MAC) address of an end machine that is logically connected to a logical network, the method comprising:
receiving configuration data for implementing a distributed logical router for the logical network, the distributed logical router comprising a plurality of logical ports that each is associated with a logical port of a logical switch; receiving a packet through a first logical port of the logical router, the packet comprising a destination internet protocol (IP) address associated with a particular logical switch that is associated with a second logical port of the logical router; to learn the MAC address of the end machine:
sending a first broadcast packet to a first set of forwarding elements that implements the particular logical switch, the first packet comprising a first MAC address as a source MAC address of the first packet; andsending a second broadcast packet to a second set of forwarding elements that also implements the particular logical switch, the second packet comprising a second different MAC address as a source MAC address of the second packet.