US Patent No. 10,263,957

SYSTEM AND METHOD FOR A FALLBACK ACCESS CONTROL LIST PORT CONFIGURATION


Patent No. 10,263,957
Issue Date April 16, 2019
Title System And Method For A Fallback Access Control List Port Configuration
Inventorship Kenneth James Duda, Menlo Park, CA (US)
Assignee Arista Networks, Inc., Santa Clara, CA (US)

Claim of US Patent No. 10,263,957

1. A non-transitory machine-readable medium having executable instructions to cause one or more processing units perform a method to install a new access control list for a port of a network element, the method comprising:receiving an indication that the first access control list for the port is to be updated with a second access control list and the port processes data communicated with port with the first access control list;
configuring the port to use a fallback access control list, wherein the fallback access control list includes a plurality of rules, wherein the first access control list is stored in a first section of an access control list table, the fallback access control list is stored in a second section of the access control list table, and the configuring is accomplished by updating a reference to the access control list table to point to the second section;
loading the second access control list into the first section for the port, wherein during the loading, the port uses the fallback access control list to process data communicated with the port; and
configuring the port to use the second access control list, wherein the port uses the second access control list to process data communicated with the port and the configuring is accomplished by updating a reference to the access control list table to point to the first section.