Redirecting network traffic through a multipoint tunnel...

Details Redirecting network traffic through a multipoint tunnel... Redirecting network traffic through a multipoint tunnel...

2007-02-27

2007-02-27

Vaughn, William (Department: 2157)

Electrical computers and digital processing systems: multicomput

Computer-to-computer data routing

Alternate path routing

C709S238000, C709S232000, C709S240000, C709S245000, C709S246000, C370S389000, C370S346000

Reexamination Certificate

active

10270409

ABSTRACT:
A method and apparatus for redirecting network traffic through a multipoint tunnel overlay network using distinct network address spaces for the overlay and transport networks. In an IP implementation, redirecting traffic to be tunneled across a network comprises deriving the transport IP address of a multipoint tunnel endpoint from the network IP address by making the transport address numerically equivalent to the network address, the transport address being in an address space distinct from the address space of the network address. Traffic is redirected by changing the address space of the next hop in a received routing advertisement.

REFERENCES:
patent: 2002/0080819 (2002-06-01), Tsao
patent: 2002/0133618 (2002-09-01), Desai et al.
patent: 2003/0108041 (2003-06-01), Aysan et al.
patent: 2003/0158962 (2003-08-01), Keane et al.
patent: 2006/0007929 (2006-01-01), Desai et al.
E. Rosen et al., “BGP/MPLS VPNs,” Mar. 1999, pp. 1-25.
Yakov Rekhter et al., “Use of PE-PE GRE or IP in RFC2547 VPNs,” Expiration Date: Aug. 2002, pp. 1-6.

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