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15. (CN1981478) Arrangement for providing network prefix information from attached mobile routers to a clusterhead in a tree-based ad hoc mobile network

Pub. No.:    1981478    International Application No.:    200580017480.1
Publication Date: Thu Jun 14 01:59:59 CEST 2007 International Filing Date: Wed Jun 01 01:59:59 CEST 2005
IPC: H04L 12/28
H04L 12/50
H04B 7/212
H04Q 11/00
Applicants: Cisco Tech Ind
思科技术公司
Inventors: Thubert Pascal
帕斯卡尔·蒂贝尔
Wetterwald Patrick
帕特里克·韦特瓦尔德
Molteni Marco
马尔科·莫尔泰尼
Moon Billy G.
比利·G·穆恩
Title: Arrangement for providing network prefix information from attached mobile routers to a clusterhead in a tree-based ad hoc mobile network
Abstract:
Mobile routers establish a tree-based network topology in an ad hoc mobile network, the tree-based network topology having a single clusterhead and attached mobile routers. Each attached mobile router has a default egress interface configured for sending messages toward the clusterhead, and ingress interfaces configured for receiving messages from attached network nodes that are away from the clusterhead. A neighbor advertisement message received from an ingress interface away from a clusterhead is used by the attached mobile router to identify specified network prefixes that are reachable via the source of the neighbor advertisement message. The attached mobile router outputs on its default upstream interface a second neighbor advertisement message that specifies the network prefix used by the attached mobile router, and the specified network prefixes from the neighbor advertisement message received on the ingress interface. Hence, connectivity is established with minimal routing overhead.