Using multiple IGMP queriers in a layer 2 network
US8675658B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2011 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Feb 29, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/1886
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques disclosed herein include systems and methods for extending an IGMP broadcast domain (multicast domain) across a transport network without implementing IGMP snooping within the core of the transport network, yet while providing efficient transport within the core of the transport network. Techniques include dividing a single IGMP interface into multiple IGMP domains or sub-domains. A separate Querier is then elected for each IGMP domain using the single IGMP interface. Edge nodes of the transport network can be configured as the multiple IGMP Queriers, and then re-distribute sender information via a separate routing protocol. Requests can then be sent using the transport network control messaging or routing protocol instead of IGMP snoop messages to advertise multicast data streams in between the multiple IGMP domains (across the transport network). Traffic can then delivered efficiently between isolated access networks of a single Service Layer 2 Network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.