Use of IP address blocks with default interfaces in a router

Details Use of IP address blocks with default interfaces in a router Use of IP address blocks with default interfaces in a router

2004-09-29

2008-09-30

Dalencourt, Yves (Department: 2157)

Electrical computers and digital processing systems: multicomput

Computer-to-computer data addressing

C340S870030, C370S474000, C370S475000

Reexamination Certificate

active

07430614

ABSTRACT:
The use of IP address blocks with default interfaces in a router is described herein. According to one embodiment, an exemplary method includes in response to a request for a first IP address received from a first client at an interface of the network element, assigning the first client an IP address from a first block of IP addresses dynamically allocated from an IP address provider separated from a pool of statically preassigned IP addresses, if there is no IP address remained unassigned in the pool of statically preassigned IP addresses, and advertising reachability information in a network with respect to the first block of the IP addresses dynamically allocated from the IP address provider, such that other entities of the network are aware of the first block of the IP addresses. Other methods and apparatuses are also described.

REFERENCES:
patent: 6944167 (2005-09-01), McPherson
patent: 2004/0139226 (2004-07-01), Margalit et al.
R. Droms, rfc 2131 “Dynamic Host Configuration Protocol”, Mar. 1997, IETF Network Working Group, 45 pages.
Patrick, M., “DHCP Relay Agent Information Option,” Network Working Group, Jan. 2001, 14 pp.
Droms, R., “Dynamic Host Configuration Protocol,” Network Working Group, Mar. 1997, 45 pp.

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