DETECTION OF A MISCONFIGURED DUPLICATE IP ADDRESS IN A DISTRIBUTED DATA CENTER NETWORK FABRIC

摘要

Presented herein are techniques to detect a misconfigured duplicate Internet Protocol (IP) address in a distributed data center network fabric. A network topology is provided that includes a plurality of network elements. A network element receives a configuration message comprising an IP address from a first host associated with the first network element. The IP address is detected to already be in use by a second host associated with a second network element. A request message is provided to the second network element, the request message configured to cause the second network element to attempt to contact the second host. A reply message is received from the second network element. If the reply message indicates that the second host exists at the second network element, an indication of a misconfiguration event is generated. Otherwise, the IP address is associated with the first host.

主权项

1. A method comprising:
at a first network element in an underlay network including a plurality of network elements, receiving, from a first virtual host associated with the network element, a configuration message comprising an Internet Protocol (IP) address; querying address information stored on the network element to determine whether the IP address is already in use by a second virtual host associated with a second network element; sending to the second network element a message configured to cause the second network element to attempt to contact the second virtual host; receiving a reply message from the second network element; and generating an indication of a misconfiguration event when the reply message indicates that the second virtual host exists at the second network element.