US 7,525,980 B2
Network address assignment in a passive optical network
Christopher D Koch, Minneapolis, Minn. (US); and Milton J Johnson, Lakeville, Minn. (US)
Assigned to Calix Networks, Inc., Petaluma, Calif. (US)
Filed on Aug. 03, 2004, as Appl. No. 10/910,523.
Application 10/910523 is a continuation of application No. 10/144008, filed on May 09, 2002, granted, now 7,020,157.
Prior Publication US 2005/0018681 A1, Jan. 27, 2005
This patent is subject to a terminal disclaimer.
Int. Cl. H04L 12/24 (2006.01)
U.S. Cl. 370—420  [370/463] 17 Claims
OG exemplary drawing
 
1. A passive optical network comprising:
a first group of network nodes coupled to a first optical fiber link;
a second group of network nodes coupled to a second optical fiber link;
a first DHCP server that assigns Internet Protocol (IP) addresses within a first common subnet scope to at least some of the network nodes in the first group and at least some of the network nodes in the second group; and
a second DHCP server that assigns IP addresses of a second common subnet scope to at least some of the network nodes in the first group and at least some network nodes in the second group, wherein the second common subnet scope is different from the first common subnet scope.