EP0825746A2
Expired / Lapsed
EP
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Non-broadcast multi-access network system capable of carrying out transmission of a next hop resolution protocol packet without setting internet protocol addresses
Abstract A non-broadcast multi-access network system
comprises a plurality of network servers at least
specific one of which servers employs Next Hop Resolution
Protocol for converting a network layer address into a
corresponding data link layer address. The specific
network server comprises a routing table access section
(102) for accessing a routing table to refer to the
routing table representative of a routing of a network
layer. An NHRP server table (103) stores server address
information of at least particular one of the network
servers and network layer address information of the
network layer managed by the particular network server as
an address set. An NHRP server processing section (101)
is supplied with a Next Hop Resolution Protocol packet
having a destination network layer address for accessing
the NHRP server table to judge whether or not the
destination network layer address exists in the address
set. The NHRP server processing section transmits the
Next Hop Resolution Protocol packet to the particular
network server when the destination network layer address
exists in the address set. The NHRP server processing
section controls the routing table access section to make
the routing table access section refer to the routing
table when the destination network layer address does not
exist in the address set.
A non-broadcast multi-access network system
comprising a plurality of network servers (100, 200, 300)
at least specific one of which employs Next Hop
Resolution Protocol for converting a network layer
address into a corresponding data link layer address,
said specific network server being characterized by: first means (102) for referring a routing table
represnetative of a routing of a network layer; second means (103) for storing server address
information of at least particular one of said network
servers and network layer address information of the
network layer managed by said particular network server
as an address set; and third means (101) supplied with a Next Hop
Resolution Protocol packet having a destination network
layer address for accessing said second means to judge
whether or not said destination network layer address
exists in said address set, said third means transmitting
said Next Hop Resolution Protocol packet to said
particular network server when said destination network
layer address exists in said address set.
Claim 2
Dependent Claim
41 words
A non-broadcast multi-access network system
as claimed in claim 1, wherein said third means (101)
controls said first means to make said first means refer
said routing table when said destination network layer
address does not exist in said address set.
Claim 3
Dependent Claim
54 words
A non-broadcast multi-access network system
as claimed in claim 1, each of said specific and said
particular network servers belonging to at least one of
network layers, wherein said server address information
is representative of server address of said particular
network server which manages the network layer to which
said specific network server belongs.
References Cited (Backward Citations)
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