Patent · US Active

Tunnel sub-interface using IP header field

US10091102B2 · kind B2 · utility

3Cited by

2References

20Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

Pascal Thubert · Villeneuve-Loubet, FR
Michael H. Behringer · Mougins, FR
Aswini Kumar Sattaluri · Bengaluru, IN

Key dates

Filing date	Jan 9, 2013
Grant date	Oct 2, 2018
Priority date	—
Expiry date	May 20, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH04L63/164
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

In one implementation, sub-interfaces are defined in Layer three (L3) tunnels, such as generic routing encapsulization (GRE) or Internet protocol security (IPsec) tunnels. Sub-interfaces inside a L3 tunnel may be preferred to using several L3 tunnels. The flow label of the tunnel header is used to define sub-interfaces of a tunnel interface. The flow label is populated with a routing instance identifier to index the sub-interfaces.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.