Method, system, and apparatus for network device to access...

Details Method, system, and apparatus for network device to access... Method, system, and apparatus for network device to access...

2011-08-16

2011-08-16

Yao, Kwang B (Department: 2473)

Multiplex communications

Fault recovery

Bypass an inoperative switch or inoperative element of a...

C370S242000, C370S432000

Reexamination Certificate

active

08000231

ABSTRACT:
A method for a network device to access a packet switched network is applied to a system in which the network device accesses the packet switched network by connecting to PEs in an active-standby mode. The method includes: an active PE and a standby PE each sends a fault detection message to the network device through an interface connected to the network device; the active PE sets the state of the interface to “up” and advertises a route to a remote PE if a fault detection response returned by the network device is received through the interface within a preset period; otherwise, the active PE sets the state of the interface to “down”, and withdraws the advertised route; and the standby PE sets the state of the interface to “up” and advertises another route to the remote PE after receiving a fault detection response through the interface connected to the network device.

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International Search Report dated Apr. 16, 2009 in connection with International Patent Application No. PCT/CN2009/070067.

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