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US 9,853,891 B2Granted
System and method for facilitating communication
AssigneeCisco Technology, Inc.
InventorsMichael P. Hammer, Ashish Dalela, Monique J. Morrow, Peter C. Tomsu
Life of this patent
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Abstract
According to one embodiment, a system includes one or more memory units for storing an Address Resolution Protocol (ARP) table. The system further includes one or more processors. The processors receive, from a routing protocol, an Internet Protocol (IP)-Media Access Control (MAC) address pair for a first host computer. The processors further populate the ARP table with the IP-MAC address pair for the first host computer.
Claims12
A system comprising:
- an access switch comprising:
- one or more memory units configured to store an Address Resolution Protocol (ARP) table and a routing protocol table;
- and
- one or more processors operably coupled to the one or more memory units, wherein the one or more memory units store instructions that configure the one or more processors to:
- receive, from the routing protocol table, an Internet Protocol (IP)-Media Access Control (MAC) address pair for a first host computer, the first host computer being a different component from the access switch;
- and
- populate the ARP table with the IP-MAC address pair for the first host computer;
- wherein the routing protocol comprises a protocol that allows switches to share network topology information between themselves;
- wherein the one or more processors are further configured to:
- receive an ARP query from a second host computer, the ARP query requesting the MAC address for the first host computer, the second host computer connected to the access switch;
- and
- based on the ARP table, transmit the MAC address for the first host computer to the second host computer;
- wherein the routing protocol comprises one of Intermediate System to Intermediate System (IS-IS) routing protocol, Interior Gateway Routing Protocol (IGRP), Enhanced Interior Gateway Routing Protocol (EIGRP), OpenShortest Path FIRST (OSPF), and Routing Information Protocol (RIP);
- and
- wherein the one or more processors only receive IP-MAC address pairs, from the routing protocol, for one or more host computers that are coupled to a particular subset of network segments.
12 more elements
A method comprising:
- storing, by one or more memory units of an access switch coupled to one or more processors of the access switch, an Address Resolution Protocol (ARP) table and a routing protocol table;
- receiving, by the one Or more processors and from Ran the routing protocol table, an Internet Protocol (IP)-Media Access Control (MAC) address pair for a first host computer, the first host computer being a different component from the access switch;
- and
- populating, by the one or more processors, the ARP table with the IP-MAC address pair for the first host computer;
- wherein a routing protocol comprises a protocol that allows switches to share network topology information between themselves;
- and further comprising:
- receiving, by the one or more processors, an ARP query from a second host computer, the ARP query requesting the MAC address for the first host computer, the second host computer connected to the access switch;
- and
- based on the ARP table, transmitting, by the one or more processors, the MAC address for the first host computer to the second host computer;
- wherein the routine protocol comprises one of Intermediate System to Intermediate System (IS-IS) routing protocol, Interior Gateway Routing Protocol (TGRP) Enhanced Interior Gateway Routing Protocol (EIGRP), Open Shortest Path First (OSPF), and Routing Information Protocol (RIP);
- and
- wherein the one or more processors only receive IP-MAC address pairs, from the routine protocol, for one or more host computers that are coupled to a particular subset of network segments.
9 more elements
Logic encoded on one or more non-transitory computer-readable media for execution and when executed by a computer processor configured to:
- store an Address Resolution Protocol (ARP) table and a routing protocol table in one or more memory units;
- receive, from the routing protocol table, an Internet Protocol (IP)-Media Access Control (MAC) address pair for a first host computer;
- and
- populate the ARP table with the IP-MAC address pair for the first host computer;
- wherein a routing protocol comprises a protocol that allows switches to share network topology information between themselves;
- wherein the logic is further configured when executed to:
- receive an ARP query from a second host computer, the ARP query requesting, the MAC address for the first host computer;
- and
- based on the ARP table, transmit the MAC address for the first host computer to the second host computer;
- wherein the logic is executed by one or more processors of an access switch, the first host computer being a different component from the access switch and the second host computer connected to the access switch;
- wherein the routing protocol comprises one of Intermediate System to Intermediate System (IS-IS) routing protocol, Interior Gateway Routing Protocol (IGRP), Enhanced Interior Gateway Routing Protocol (EIGRP), Open Shortest Path First (OSPFh and Routing Information Protocol (RIP);
- and
- wherein the one of more processors only receive IP-MAC address pairs, from the routing protocol, for one or more host computers that are coupled to a particular subset of network segments.
10 more elements
Dependencies are inferred from the claim text.