Virtual leased line address resolution protocol cache for customer edge internet protocol addresses
US10257016B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2009 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Nov 17, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/58
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Various exemplary embodiments relate to a provider edge node and a method performed on the node including one or more of the following: storing, in a cache on the node, an association between an Internet Protocol (IP) address of the customer edge device and a Media Access Control (MAC) address of the customer edge device; storing, in a backup memory in the node, a copy of the last-known IP address of the customer edge device; removing the stored association from the cache in response to a cache-clearing event, while maintaining the copy of the last-known IP address in the backup memory; sending an address discovery message, the address discovery message requesting an updated MAC address corresponding to the last-known IP address maintained in the backup memory; and updating the cache to reflect the updated MAC address upon receipt of an additional address update message from the customer edge device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.