Method and device for uninterrupted converting data as pulling out exchange network board
A technology for switching network boards and data, applied in the field of communications, can solve the problems of increasing operational complexity, inconvenient on-site operation, and inability to meet maintenance without flow loss.
Inactive Publication Date: 2007-06-20
HUAWEI TECH CO LTD
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Problems solved by technology
[0006] The shortcoming of prior art is to issue order and just can finish by means of console
Because there is a certain distance between the equipment maintenance site and the computer room where the console is placed, the on-site operation is not convenient and increases the complexity of the operation
For some strict tests that do not allow command intervention, the cells being transmitted on the line and in the cache of the SFU will be lost when the SFU is pulled out, which cannot meet the maintenance without traffic loss.
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[0047] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.
[0048] The present invention actually proposes a new memory management mechanism. The principle is that when it senses that a certain SFU has been pulled out, the read pointer of the memory on the circuit board that stores the data sent to the SFU rolls back, and resends the data just sent, thus ensuring that the data will not lost.
[0049]Referring to FIG. 2 , the memory on the circuit board can be a shared memory inside the FIC, or a memory outside the FIC, and is used to store data sent to the SFU. Usually, the memory is divided into N fixed-length cell buffers according to the settings of the switching network, such as 64 bytes or 72 bytes; the data entering the circuit board is under the control of the buffer controller , according to the address of the free buffer area provided by the b...
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This invention provides the method and device for data when the network plate is pulled out. It belongs to the field of communication technology. In order to overcome the deficiency that the data may be lost when pulls out the network plate in current technology, it establishes the preservation sent exchanging network plate's data message address on the breadboard, this makes the data flow sent to this exchanging network plate re-send to other exchanging network plate when the it is pulled out; this invention also provides a device which includes network board output queue module and scheduling module; the use technology of this invention ensures that the data flow will not lose, and this needn't the control board's early intervention, it completely solve uninterrupted transmission problem of switching network maintenance.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for uninterruptedly forwarding data when a switching network board is pulled out. Background technique [0002] With the development of network bearer services, operators and users have higher and higher requirements on network reliability. As an important network device, the high availability of routers has a decisive impact on the reliability of the network. NSF (Non-Stop Forwarding, uninterrupted forwarding) is an important indicator to measure the availability of routers. A router with NSF features can ensure that the forwarded data flow will not be interrupted when the network device is abnormal. [0003] NSF characteristics are mainly guaranteed through redundancy mechanisms. For the SFU in the router responsible for forwarding data, there are two redundancy modes: N+1 load sharing mode and 1:1 active / standby mode. The first method is to have ...
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Login to View More IPC IPC(8): H04L12/54H04L12/24
Inventor 王重阳
Owner HUAWEI TECH CO LTD