NHRP packet authentication method and NHRP server

Details NHRP packet authentication method and NHRP server NHRP packet authentication method and NHRP server

1997-08-13

1999-12-28

Ngo, Ricky

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

370466, 370475, H04L 1256

Patent

active

060091029

ABSTRACT:
An authentication method in an NHRP (Next Hop Resolution Protocol) for performing an address resolution for converting a network layer address in an NBMA (Non-broadcast, Multi-access) network to a datalink layer address. The method comprises steps of: providing an NHRP server for performing an address resolution which has a plurality of interfaces belonging to respective sub-networks, maintaining authentication keys and authentication types respectively allocated to the interfaces in the NHRP server; authenticating an NHRP packet received from one of the interfaces by using the authentication key allocated to the interface which receives the NHRP packet; and discarding the NHRP packet in case of authentication being unauthorized. The method is capable of setting for each domain a mode for redirecting an NHRP (Next Hop Resolution Protocol) packet when authentication types between LIS (Logical IP Subnet, IP: Internet Protocol) are different and a mode for when an NHRP packet is redirected between domains.

REFERENCES:
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patent: 5600644 (1997-02-01), Chang et al.
patent: 5617540 (1997-04-01), Civanlar et al.
patent: 5699347 (1997-12-01), Callon
patent: 5809233 (1998-09-01), Shur
patent: 5822320 (1998-10-01), Horikawa et al.
patent: 5828844 (1998-10-01), Civanlar et al.
James V. Luciani et al., "NBMA Next Hop Resolution Protocol (NHRP)", Internet Engineering Task Force (IETF), Sep. 1997, pp. 1-49, Dec. 1996, pp. 1-48.

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