Slave inter-lan connection device, an inter-lan connection system and a hot standby method of said inter-lan connection system
First Claim
1. A slave device, for interconnecting local area networks (LANs), connected to a route to which a master device for interconnecting said LANs is connected, said master device having respective routing information and respective correspondence information, said slave device comprising:
- means for detecting a malfunction state of said master device;
means for generating respective routing information and respective correspondence information concurrently with and identical to said respective routing information and said respective correspondence information of said master device, said respective routing information corresponding to network information, said correspondence information corresponding to physical information;
means for inhibiting a routing operation of said slave device when said means for detecting does not indicate that said master device is in said malfunction state; and
means for enabling said routing operation of said slave device when said means for detecting indicates that said master device is in said malfunction state, said routing operation being based on said routing information and said correspondence information, said means for enabling defining a substitution means of said slave device.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention has both a master router and a slave router on a route. The slave router comprises an address setting section 9 for setting a physical address and a network address of the master router as well as its own physical address, and a control section 12 for conducting routing operation and controlling a ping test section 10 and routing/ARP table 11. While halting routing operation, the slave router receives a broadcast packet and a control packet sent to the address of the master router, makes a routing/ARP table same as that of the master router, regularly conducts a ping test to a LAN interface of the master router, and decides that the master router is in malfunction when the master router makes no response to the ping test. Then, the slave router starts routing operation instead of the master router.
67 Citations
13 Claims
-
1. A slave device, for interconnecting local area networks (LANs), connected to a route to which a master device for interconnecting said LANs is connected, said master device having respective routing information and respective correspondence information, said slave device comprising:
-
means for detecting a malfunction state of said master device; means for generating respective routing information and respective correspondence information concurrently with and identical to said respective routing information and said respective correspondence information of said master device, said respective routing information corresponding to network information, said correspondence information corresponding to physical information; means for inhibiting a routing operation of said slave device when said means for detecting does not indicate that said master device is in said malfunction state; and means for enabling said routing operation of said slave device when said means for detecting indicates that said master device is in said malfunction state, said routing operation being based on said routing information and said correspondence information, said means for enabling defining a substitution means of said slave device. - View Dependent Claims (2, 3, 4)
-
-
5. A system for interconnecting local area networks (LANs), comprising:
-
a master device interconnecting said LANs and having respective routing information and respective correspondence information; and a slave device comprising; means for detecting a malfunction state of said master device; means for generating respective routing information and respective correspondence information concurrently with and identical to said respective routing information and said respective correspondence information of said master device, said respective routing information corresponding to network information, said correspondence information corresponding to physical information; means for inhibiting a routing operation of said slave device when said means for detecting does not indicate that said master device is in said malfunction state; and means for enabling said routing operation of said slave device when said means for detecting indicates that said master device is in said malfunction state, said routing operation being based on said routing information and said correspondence information, said means for enabling defining a substitution means of said slave device. - View Dependent Claims (6, 7, 8, 9)
-
-
10. In an inter-LAN connection system having a master inter-LAN connection device and a slave inter-LAN connection device connected to the same route, a hot standby method comprising:
-
generating, at said slave device, respective routing information and respective correspondence information concurrently with and identical to routing information and correspondence information of said master device, said respective routing information corresponding to network information, said correspondence information corresponding to physical information; detecting a malfunction state of said master device; enabling a routing operation of said slave device, in response to said detection of said malfunction state of said master device, based on said respective routing information and said respective correspondence information. - View Dependent Claims (11, 12, 13)
-
Specification