CN105681228A - Multi-port Ethernet switch aggregation synchronizing method - Google Patents

Abstract

The invention relates to a multi-port Ethernet switch aggregation synchronizing method, which comprises the following steps: receiving a message sent from a port module of a network device by a multi-port Ethernet interface device; parsing the message sent from the port module to obtain ingress port information, and finding the information of a switch chip or an NP (Network Processor) corresponding to the ingress port information in a mapping table; writing the information of the switch chip or the NP to the message sent from the port module so that the switch chip or the NP obtains the ingress port information according to the information of the switch chip or the NP; obtaining the corresponding ingress port information, and deleting the ingress port information of the message sent from the switch chip or the NP; and after synchronizing RTC (Real Time Clock) of a board with the clock from the port, synchronizing the clock of each of master ports on the board with the RTC clock of the board. According to the method disclosed by the invention, the whole device clock synchronization of a multi-port isochronous Ethernet is realized; and in each synchronizing process, the clock with the highest clock precision is selected for synchronizing, so that the high precision of the clock synchronization of a multi-port isochronous Ethernet device is guaranteed.

Description

A kind of multiport Ethernet exchanging polymerization synchronous method

Technical field

The present invention relates to ethernet switch technology field, be specifically related to a kind of multiport Ethernet exchanging polymerization synchronous method.

Background technology

Middle and high end switch, router be as the visual plant of core net and Access Network, in ensureing to possess the exchange capacity of some levels, can compatible polytype interface also very important. Conventionally adopt multiport Ethernet interface device to realize the docking of the network equipment and low-end switch, the basic realization of this device is a switching port docking of multiple ports and exchange chip or network processing unit (under be called NP), it can be a 1GE port of the corresponding exchange chip of multiple 100M ports or NP, or a 10GE port of the corresponding exchange chip of multiple 1GE ports or NP, the like.

Along with the development of data communication technology, the particularly appearance of the data communication technology of high bandwidth and high speed degree, more and more with the use of synchronous ethernet transmission of speech signals, there is thus multiport synchronous ethernet equipment, on described equipment, there are multiple plates, on each plate, have again multiple ports, due at present more and more higher to the requirement of time precision, the multiport synchronous ethernet equipment of working it out, need to reach the time synchronized of Whole Equipment.

At present a lot of for the patent of synchronised clock, but patent based on device internal synchronization few. The patent of invention that is CN200410065340 as publication number is to be specifically designed to programme-controlled exchange communication system, has also described the clock synchronous treating method in a plate, but polylith veneer how to manage same equipment is not described. The United States Patent (USP) that and for example publication number is US6178176, although by stackable bus, the repeater in network is carried out synchronously, cannot be to the clock synchronous of multiport synchronous ethernet equipment.

In sum, in prior art, still the clock of multiport synchronous ethernet equipment is not carried out to synchronous method.

Summary of the invention

The object of the present invention is to provide a kind of multiport Ethernet exchanging polymerization synchronous method, the full equipment clock that can realize multiport synchronous ethernet is synchronous.

For achieving the above object, the present invention has adopted following technical scheme:

A kind of multiport Ethernet exchanging polymerization synchronous method, comprises the following steps:

(1) multiport Ethernet interface device receives the message of the port module transmission of the network equipment;

(2) ingress port information of the message sending according to described port module and default mapping table, resolve the message that described port module sends, and obtains ingress port information, searches exchange chip corresponding to the interior described ingress port information of described mapping table or the information of NP,

(3) information of described exchange chip or NP is write to the message that described port module sends, and be sent to corresponding exchange chip or NP, supply described exchange chip or NP according to the acquisition of information ingress port information of described exchange chip or NP;

(4) according to the exchange chip in the message of described exchange chip or NP transmission or information and the described mapping table of NP, obtain corresponding ingress port information, delete the ingress port information of the message of described exchange chip or NP transmission simultaneously;

(5) port information that basis is obtained recovers the clock frequency of each port, determine from port and master port according to the clock of each port, use from the clock of port carrys out the real-time clock RTC clock of synchronous plate, carry out each master port clock on synchronous plate with the RTC clock of plate.

Step (5) is further comprising the steps of afterwards:

(A) determine after slave plate and mainboard according to the RTC clock of each plate, carry out synchronizer RTC clock with the RTC clock of slave plate, and equipment RTC clock is handed down to plate;

(B) buttress carrys out synchronous plate RTC clock according to equipment RTC clock, then carrys out the clock of each port on synchronous plate by the RTC clock of plate after synchronous.

Described step (5) is further comprising the steps of before:

(a) after full device start, reset, counter O reset, obtain plate Initial R TC clock and equipment Initial R TC clock;

(b) data of sending first according to synchronous ethernet recover after the clock of each port, start plate counter, by the clock setting of described plate counter be equipment acquiescence from port clock, and carry out synchronous plate RTC clock with equipment acquiescence from port clock;

(c) after starting device counter, be unit count device clock by the slave plate RTC clock setting of equipment acquiescence, and carry out synchronizer RTC clock with the RTC clock of equipment acquiescence slave plate, use again the RTC clock of each mainboard of equipment RTC clock synchronous, use the clock of all of the port separately of each mainboard of RTC clock synchronous of synchronous rear each mainboard.

As shown from the above technical solution, the present invention is by method and the multiport Ethernet interface device of identification multiport Ethernet interface device port, by amendment message, make the exchange chip of the network equipment or NP can identify the port of multiport Ethernet interface device, thereby really realize multiport Ethernet interface device, further improve the capacity of the network equipment. And by the desynchronize clock of each port on the RTC clock of mainboard and mainboard of the RTC clock after synchronous, the full equipment clock of having realized multiport synchronous ethernet is synchronous, and every clock of all selecting maximum clock precision hyposynchronous time comes synchronous, has ensured the synchronous high accuracy of multiport synchronous ethernet equipment clock.

Brief description of the drawings

Fig. 1 is method flow diagram of the present invention.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention will be further described:

As shown in Figure 1, multiport Ethernet exchanging polymerization synchronous method, specifically comprises the following steps:

S1: multiport Ethernet interface device receives the message of the port module transmission of the network equipment;

S2: the ingress port information of the message sending according to described port module and default mapping table, resolve the message that described port module sends, obtain ingress port information, search exchange chip corresponding to the interior described ingress port information of described mapping table or the information of NP,

S3: the information of described exchange chip or NP is write to the message that described port module sends, and be sent to corresponding exchange chip or NP, supply described exchange chip or NP according to the acquisition of information ingress port information of described exchange chip or NP;

S4: according to the exchange chip in the message of described exchange chip or NP transmission or information and the described mapping table of NP, obtain corresponding ingress port information, delete the ingress port information of the message of described exchange chip or NP transmission simultaneously;

S5: determine after slave plate and mainboard according to the RTC clock of each plate, carry out synchronizer RTC clock with the RTC clock of slave plate, and equipment RTC clock is handed down to plate;

S6: buttress carrys out synchronous plate RTC clock according to equipment RTC clock, then carrys out the clock of each port on synchronous plate by the RTC clock of plate after synchronous.

S7: the clock frequency that recovers each port according to the port information obtaining, determine from port and master port according to the clock of each port, use from the clock of port carrys out the real-time clock RTC clock of synchronous plate, carry out each master port clock on synchronous plate with the RTC clock of plate.

S8: after full device start, reset, counter O reset, obtain plate Initial R TC clock and equipment Initial R TC clock;

S9: the data of sending first according to synchronous ethernet recover after the clock of each port, starts plate counter, by the clock setting of described plate counter be equipment acquiescence from port clock, and carry out synchronous plate RTC clock with equipment acquiescence from port clock;

S10: after starting device counter, be unit count device clock by the slave plate RTC clock setting of equipment acquiescence, and carry out synchronizer RTC clock with the RTC clock of equipment acquiescence slave plate, use again the RTC clock of each mainboard of equipment RTC clock synchronous, use the clock of all of the port separately of each mainboard of RTC clock synchronous of synchronous rear each mainboard.

Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skill in the art make technical scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.

Claims (3)

1. a multiport Ethernet exchanging polymerization synchronous method, is characterized in that, comprises the following steps:

(1) multiport Ethernet interface device receives the message of the port module transmission of the network equipment;

(2) ingress port information of the message sending according to described port module and default mapping table, resolve the message that described port module sends, and obtains ingress port information, searches exchange chip corresponding to the interior described ingress port information of described mapping table or the information of NP;

(3) information of described exchange chip or NP is write to the message that described port module sends, and be sent to corresponding exchange chip or NP, supply described exchange chip or NP according to the acquisition of information ingress port information of described exchange chip or NP;

(4) according to the exchange chip in the message of described exchange chip or NP transmission or information and the described mapping table of NP, obtain corresponding ingress port information, delete the ingress port information of the message of described exchange chip or NP transmission simultaneously;

(5) port information that basis is obtained recovers the clock frequency of each port, determine from port and master port according to the clock of each port, use from the clock of port carrys out the real-time clock RTC clock of synchronous plate, carry out each master port clock on synchronous plate with the RTC clock of plate.

2. multiport Ethernet exchanging polymerization synchronous method according to claim 1, is characterized in that, step (5) is further comprising the steps of afterwards:

(A) determine after slave plate and mainboard according to the RTC clock of each plate, carry out synchronizer RTC clock with the RTC clock of slave plate, and equipment RTC clock is handed down to plate;

(B) buttress carrys out synchronous plate RTC clock according to equipment RTC clock, then carrys out the clock of each port on synchronous plate by the RTC clock of plate after synchronous.

3. multiport Ethernet exchanging polymerization synchronous method according to claim 1, is characterized in that: described step (5) is further comprising the steps of before:

(a) after full device start, reset, counter O reset, obtain plate Initial R TC clock and equipment Initial R TC clock;

(b) data of sending first according to synchronous ethernet recover after the clock of each port, start plate counter, by the clock setting of described plate counter be equipment acquiescence from port clock, and carry out synchronous plate RTC clock with equipment acquiescence from port clock;

(c) after starting device counter, be unit count device clock by the slave plate RTC clock setting of equipment acquiescence, and carry out synchronizer RTC clock with the RTC clock of equipment acquiescence slave plate, use again the RTC clock of each mainboard of equipment RTC clock synchronous, use the clock of all of the port separately of each mainboard of RTC clock synchronous of synchronous rear each mainboard.