CN100391164C - Internal storage warning processing method and route of converting without discontinuous - Google Patents
Internal storage warning processing method and route of converting without discontinuous Download PDFInfo
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- CN100391164C CN100391164C CNB200510137213XA CN200510137213A CN100391164C CN 100391164 C CN100391164 C CN 100391164C CN B200510137213X A CNB200510137213X A CN B200510137213XA CN 200510137213 A CN200510137213 A CN 200510137213A CN 100391164 C CN100391164 C CN 100391164C
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Abstract
The present invention discloses a processing method and a router for transmitting uninterrupted memory alarms, which is used for solving the problem that when the router memory alarms are processed, the uninterrupted transmission can not be carried out at present. The method of the present invention is applied to the condition that a graceful restarting GR function in a border gateway protocol BGP is supported by the router which generates the memory alarms and a neighbor router which has conversation relation with the router which generates the memory alarms. The method comprises the steps: A, a conversation passage which needs to be stopped is closed by the memory alarm router in a late mode to make the corresponding neighbor router reserve current routing information; B, after the memory alarm router releases the memory in a GR mode, the neighbor router newly receives the routing information.
Description
Technical field
The present invention relates to network field, particularly relate to a kind of realization and transmit continual internal storage warning processing method and router.
Background technology
Router is the gateway device that a kind of IP of carrying out message is transmitted in essence, and its routing iinformation that is used to refer to Leader literary composition forwarding is provided by various Routing Protocols.So whether providing of routing iinformation be stable, is related to the service reliability of router.
Router is in actual motion, owing to having system configuration factor and network route reason of changes, so the problem of the master control borad memory headroom deficiency of router can take place.
Internal memory is depleted and cause the situation of system crash to occur under the extreme case, when handling internal storage warning, has adopted initiatively Rescission of Agreement neighborhood at present, and has deleted all routing iinformations, to discharge the method for associated internal memory.
Existing effective forwarding routing iinformation is deleted but this internal storage warning processing method can cause the internal storage warning router, and far-end neighbor also can be deleted the routing iinformation of receipts from this router automatically simultaneously.Because there is the characteristic of forwarded hop-by-hop in the IP forwarding mechanism,, bring infringement for the reliability services ability of system so finally can cause the forwarding capability of network of relation to stop.
Summary of the invention
The invention provides a kind of realization and transmit continual internal storage warning processing method and router, when solving the alarm of present processing router memory, problem that can't uninterrupted forwarding.
The neighbor router that the inventive method is applied to the router of internal storage warning to take place and have session relationship is with it all supported the situation of the Graceful Restart GR function in the Border Gateway Protocol (BGP), comprises the following steps:
The session channel that A, the late release of internal storage warning router need stop is so that corresponding neighbor router keeps current routing iinformation;
After B, internal storage warning router discharge internal memory in the GR mode, set up new session channel and close the described session channel that needs termination, receive routing iinformation again from described neighbor router again.
In the described steps A, the session channel that the internal storage warning router is maximum with committed memory needing to be defined as the session channel of termination.Perhaps, in the described steps A, the session channel of article one routing iinformation correspondence that the internal storage warning router will be received after will alarming needing to be defined as the session channel of termination.Perhaps, in the described steps A, the internal storage warning router is defined as all session channels to need the session channel of termination.
The condition of internal storage warning can preestablish.
The router of internal storage warning described in the step B discharges internal memory in the GR mode, comprises the following steps:
The internal storage warning router is removed the routing iinformation of sending from the described session channel that need stop in its internal memory; In transmitting mechanism with this routing iinformation of outmoded mark for marking.
Set up new session channel described in the step B and close the described session channel that needs termination, comprise the following steps: that the internal storage warning router sends the link setup request that carries first sign to described neighbor router; After described neighbor router and internal storage warning router were set up new session channel, the internal storage warning router was closed the described session channel that needs termination.
The routing iinformation that described reception neighbor router is sent comprises the following steps: that neighbor router is designated triggering with described first, sends corresponding routing iinformation from newly-built session channel to internal memory alarm route device; The routing iinformation that the internal storage warning router stores is received, and with the routing iinformation received with transmit that the routing iinformation with outmoded sign sign contrasts in the mechanism, if there is identical routing iinformation, then the outmoded sign of the routing iinformation of correspondence is removed; Otherwise, add to and transmit in the mechanism; When the internal storage warning router was received the transmission end that described neighbor router sends, the routing iinformation that has outmoded sign in the mechanism was transmitted in deletion.
Also comprise step after the described step B: the best route information table of internal storage warning router after described neighbor router sends renewal.
Router of the present invention is supported the Graceful Restart GR function in the Border Gateway Protocol (BGP), comprising: the session channel locating module, be used for when this machine generation internal storage warning, and need to determine the session channel of termination; Time delay module is used for the described session channel that late release need stop; Release module, the session channel that the needs that are used for determining according to described session channel locating module stop discharges internal memory in the GR mode.
Described router also comprises: the internal storage warning trigger module is used to be provided with the condition of initiating internal storage warning; Locating rule is provided with module, is used to be provided with locating rule, so that described session channel locating module need to determine the session channel of termination in view of the above.
Described locating rule is provided with the locating rule that is provided with in the module and comprises: the session channel that committed memory is maximum is defined as the session channel that needs stop; Perhaps, the session channel of article one routing iinformation correspondence of receiving after the alarm is defined as need the session channel that stops; Perhaps, all session channels are defined as need the session channel of termination.
Beneficial effect of the present invention is as follows:
The invention provides a kind of realization and transmit continual internal storage warning processing method, the neighbor router that is applied to the router of internal storage warning to take place and have session relationship is with it all supported the situation of the Graceful Restart GR function in the Border Gateway Protocol (BGP).
The inventive method is when router generation internal storage warning, at first, according to default locating rule, definite session channel that need stop (for example: the session channel that committed memory is maximum), but not according to current mechanism, directly disconnect the described session channel that needs termination, but postpone to disconnect this session channel.By the described session channel that needs termination, the neighbor router that is connected with the internal storage warning router will think that this session channel is still keeping agreement to connect, and can not delete the routing iinformation that the internal storage warning router is sent, and transmits uninterrupted with assurance like this.
Afterwards, the internal storage warning router discharges routing iinformation in the internal memory in the GR mode, and (interface board) but do not delete described routing iinformation with outmoded mark for marking routing iinformation in transmitting mechanism, can guarantee to transmit uninterrupted like this.
At last, the internal storage warning router receives routing iinformation in the GR mode again from described neighbor router, and the routing iinformation that receives is stored in the internal memory; And with the routing iinformation received with transmit that the routing iinformation with outmoded sign sign contrasts in the mechanism, if there is identical routing iinformation, then the outmoded sign of the routing iinformation of correspondence is removed; Otherwise, add to and transmit in the mechanism; When the internal storage warning router was received the transmission end that described neighbor router sends, the routing iinformation that has outmoded sign in the mechanism was transmitted in deletion.So only invalid routing iinformation being deleted from transmit mechanism, only is to have finished the operation of removing outmoded sign or added operation for effective routing iinformation, so when finishing updating route information in the forwarding mechanism, can not be interrupted forwarding.
In order to support the inventive method, the present invention also provides a kind of router, comprising: the session channel locating module, be used for when this machine generation internal storage warning, and need to determine the session channel of termination; Time delay module is used for the described session channel that late release need stop; Release module, the session channel that the needs that are used for determining according to described session channel locating module stop discharges internal memory in the GR mode; Further, also comprise: the internal storage warning trigger module is used to be provided with the condition of initiating internal storage warning; Locating rule is provided with module, is used to be provided with locating rule, so that described session channel locating module need to determine the session channel of termination in view of the above.
Description of drawings
Fig. 1 is a router topology schematic diagram of the present invention;
Fig. 2 is the inventive method flow chart of steps.
Embodiment
When handling internal storage warning in order to be implemented in, forwarding capability is uninterrupted, the invention provides a kind of router, and the Graceful Restart GR function that it is supported in the Border Gateway Protocol (BGP) referring to shown in Figure 1, comprising: session channel locating module, time delay module; Further described router can comprise that also the internal storage warning trigger module, the locating rule that link to each other with described session channel locating module respectively are provided with module and release module.
Described internal storage warning trigger module is used to be provided with the condition of initiating internal storage warning.
Described session channel locating module is used for when this machine generation internal storage warning, need to determine the session channel of termination.
Described locating rule is provided with module, is used to be provided with locating rule, so that described session channel locating module need to determine the session channel of termination in view of the above.The locating rule of described setting includes but not limited to following three kinds: the session channel that committed memory is maximum needing to be defined as the session channel of termination; Perhaps, the session channel of article one routing iinformation correspondence of receiving after the alarm is defined as need the session channel that stops; Perhaps, all session channels are defined as need the session channel of termination.
Described time delay module is used for the described session channel that late release need stop.
Described release module, the session channel that the needs that are used for determining according to described session channel locating module stop discharges internal memory in the GR mode.
Corresponding above-mentioned router, the invention provides a kind of realization and transmit continual internal storage warning processing method, the neighbor router that is applied to the router of internal storage warning to take place and have session relationship is with it all supported the situation of the Graceful Restart GR function in the Border Gateway Protocol (BGP), referring to shown in Figure 2, comprise the following steps:
When S1, router memory alarm, need to determine the session channel of termination.
S2, the described session channel that needs termination of late release.
S3, internal storage warning router discharge internal memory in the GR mode.
S4, set up new session channel.
S5, close the described session channel that need to stop.
S6, receive routing iinformation again from described neighbor router.
S7, internal storage warning router send best route information table to neighbor router.
Below specifically describe the inventive method by three examples.
Method example one: the session channel that committed memory is maximum needing to be defined as the session channel of termination, and finishes internal storage warning and handle.
Suppose to exist in this example three neighbor routers that exist protocol conversation to concern with the internal storage warning router.
When S101, router memory alarm, need to determine the session channel of termination.
In the internal storage warning trigger module of router, set in advance the condition of initiating internal storage warning, for example: when the memory usage of router reaches 90%.
When the memory usage of router reached 90%, this router was initiated internal storage warning, and triggers its inner session channel locating module.Described session channel locating module is provided with from locating rule and calls locating rule the module, and this routine locating rule is provided with locating rule default in the module needing to be defined as termination for the session channel that committed memory is maximum session channel.
Afterwards, the session channel locating module is analyzed described three neighbor routers that exist protocol conversation to concern with this internal storage warning router, the memory size percentage that the routing iinformation of sending respectively is shared, for example: first neighbor router takies 20%, second neighbor router takies 30%, the three neighbor router and takies 40%.Determine neighbor router (the 3rd neighbor router) and the session channel of the session channel between this internal storage warning router that committed memory is maximum in view of the above for needing to stop.
S102, the described session channel that needs termination of late release.
Behind the session channel of having determined to need to stop at S101, do not close this session channel immediately, but by this session channel of time delay module late release, so that the 3rd neighbor router thinks that the session channel between itself and the internal storage warning router still exists, thereby the routing iinformation that the 3rd neighbor router reserved memory alarm route device is sent.
S103, internal storage warning router discharge internal memory in the GR mode.
The internal storage warning router is removed the routing iinformation (i.e. the routing iinformation of sending from the 3rd neighbor router) that (is not limited to the master control borad internal memory) in its internal memory and sends from the described session channel that need to stop by release module.And the routing iinformation that (being not limited to interface board) sends from the described session channel that need stop with outmoded mark for marking in transmitting mechanism, but do not delete described routing iinformation, so that uninterrupted forwarding.
S104, set up new session channel.
The internal storage warning router sends the link setup request that carries first sign to the 3rd neighbor router, and described first is designated the GR sign among the BGP, in order to pretend the Graceful Restart incident one time, so that the triggering following flow process.After the 3rd neighbor router is received described link setup request, set up new session channel with the internal storage warning router.
S105, close the described session channel that need to stop.
After described new session channel was set up, the internal storage warning router was closed the described session channel that needs termination.Owing to had new session channel between the two at this moment, so the 3rd neighbor router still can not deleted the routing iinformation that the internal storage warning router is sent.
S106, receive routing iinformation again from neighbor router.
The 3rd neighbor router is designated triggering with described first in the link setup request of receiving, sends the routing iinformation relevant with the internal storage warning router from newly-built session channel to internal memory alarm route device.The internal storage warning router is stored the routing iinformation of receiving in internal memory, and with the routing iinformation received with transmit that the routing iinformation with outmoded sign sign contrasts in the mechanism, if there is identical routing iinformation, then the outmoded sign of the routing iinformation of correspondence is removed; Otherwise, add to and transmit in the mechanism.When the internal storage warning router was received the transmission end that the 3rd neighbor router sends, the routing iinformation that has outmoded sign in the mechanism was transmitted in deletion.So only invalid routing iinformation being deleted from transmit mechanism, only is to have finished the operation of removing outmoded sign or added operation for effective routing iinformation, so when finishing updating route information in the forwarding mechanism, can not be interrupted forwarding.
So far finished processing, finished the updating route information of transmitting in the mechanism according to the current routing iinformation of storing in the internal memory simultaneously the router internal storage warning, consistent to guarantee in the internal memory with the routing iinformation of transmitting in the mechanism.
S107, internal storage warning router send best route information table to neighbor router.
Finish this internal memory at the internal storage warning router and discharge back (promptly more new routing information after), send best route information table after upgrading to neighbor router, so that neighbor router and local terminal are synchronous.
If the processing of this internal storage warning can not fundamentally discharge internal memory, then when reaching alarm conditions once more, can repeat above-mentioned flow process, can not be interrupted to guarantee to transmit; Administrative staff can delete corresponding routing iinformation simultaneously, discharge internal memory.
Method example two: the session channel of article one routing iinformation correspondence of receiving after will alarming needing to be defined as the session channel of termination.
Suppose to exist in this example three neighbor routers that exist protocol conversation to concern with the internal storage warning router.
When S201, router memory alarm, need to determine the session channel of termination.
In the internal storage warning trigger module of router, set in advance the condition of initiating internal storage warning, for example: when the memory usage of router reaches 90%.
When the memory usage of router reached 90%, this router was initiated internal storage warning, and triggers its inner session channel locating module.Described session channel locating module is provided with from locating rule and calls locating rule the module, and this routine locating rule is provided with in the module default locating rule needing to be defined as termination for the session channel of article one routing iinformation correspondence of receiving after will alarm session channel.
Afterwards, the session channel locating module is monitored the routing iinformation that this router receives.If article one routing iinformation that this router is received is that the 3rd neighbor router is sent, then determine the session channel of session channel between the 3rd neighbor router and this internal storage warning router in view of the above for needing to stop after internal storage warning.
S202, the described session channel that needs termination of late release.(identical) with S102
S203, internal storage warning router discharge internal memory in the GR mode.(identical) with S103
S204, set up new session channel.(identical) with S104
S205, close the described session channel that need to stop.(identical) with S105
S206, receive routing iinformation again from neighbor router.(identical) with S106
S207, internal storage warning router send best route information table to neighbor router.(identical) with S107
Method example three: the session channel that all session channels needing to be defined as termination.
Suppose to exist in this example three neighbor routers that exist protocol conversation to concern with the internal storage warning router.
When S301, router memory alarm, need to determine the session channel of termination.
In the internal storage warning trigger module of router, set in advance the condition of initiating internal storage warning, for example: when the memory usage of router reaches 90%.
When the memory usage of router reached 90%, this router was initiated internal storage warning, and triggers its inner session channel locating module.Described session channel locating module is provided with from locating rule and calls locating rule the module, this routine locating rule is provided with the session channel of locating rule for all session channels being defined as need stop of presetting in the module, so the session channel locating module needing to be defined as all session channels the session channel of termination in view of the above.
S302, the described session channel that needs termination of late release.(identical) with S102
S303, internal storage warning router discharge internal memory in the GR mode.(identical) with S103
S304, set up new session channel.(identical) with S104
S305, close the described session channel that need to stop.(identical) with S105
S306, receive routing iinformation again from neighbor router.(identical) with S106
S307, internal storage warning router send best route information table to neighbor router.(identical) with S107
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (12)
1. realize transmitting continual internal storage warning processing method for one kind, the neighbor router that is applied to the router of internal storage warning to take place and have session relationship is with it all supported the situation of the Graceful Restart GR function in the Border Gateway Protocol (BGP), it is characterized in that, comprise the following steps:
The session channel that A, the late release of internal storage warning router need stop is so that corresponding neighbor router keeps current routing iinformation;
After B, internal storage warning router discharge internal memory in the GR mode, set up new session channel and close the described session channel that needs termination, receive routing iinformation again from described neighbor router again.
2. the method for claim 1 is characterized in that, in the described steps A, the session channel that the internal storage warning router is maximum with committed memory needing to be defined as the session channel of termination.
3. the method for claim 1 is characterized in that, in the described steps A, the session channel of article one routing iinformation correspondence that the internal storage warning router will be received after will alarming needing to be defined as the session channel of termination.
4. the method for claim 1 is characterized in that, in the described steps A, the internal storage warning router is defined as all session channels to need the session channel of termination.
5. as each described method of claim 1 to 4, it is characterized in that the condition of internal storage warning can preestablish.
6. as each described method of claim 1 to 4, it is characterized in that the router of internal storage warning described in the step B discharges internal memory in the GR mode, comprises the following steps:
-internal storage warning router is removed the routing iinformation of sending from the described session channel that need stop in its internal memory;
-in transmitting mechanism with this routing iinformation of outmoded mark for marking.
7. the method for claim 1 is characterized in that, the session channel that described foundation is new is also closed the described session channel that needs termination, comprises the following steps:
-internal storage warning router sends the link setup request that carries first sign to described neighbor router;
After-described neighbor router and internal storage warning router were set up new session channel, the internal storage warning router was closed the described session channel that needs termination.
8. method as claimed in claim 7 is characterized in that, the routing iinformation that described reception neighbor router is sent comprises the following steps:
-neighbor router is designated triggering with described first, sends corresponding routing iinformation from newly-built session channel to internal memory alarm route device;
The routing iinformation that-internal storage warning router stores is received, and with the routing iinformation received with transmit that the routing iinformation with outmoded sign sign contrasts in the mechanism, if there is identical routing iinformation, then the outmoded sign of the routing iinformation of correspondence is removed; Otherwise, add to and transmit in the mechanism;
-when the internal storage warning router was received the transmission end that described neighbor router sends, the routing iinformation that has outmoded sign in the mechanism was transmitted in deletion.
9. as each described method of claim 1 to 4, it is characterized in that, also comprise step after the described step B:
The best route information table of internal storage warning router after described neighbor router sends renewal.
10. a router is supported the Graceful Restart GR function in the Border Gateway Protocol (BGP), it is characterized in that, comprising:
The session channel locating module is used for when this machine generation internal storage warning, need to determine the session channel of termination;
Time delay module is used for the described session channel that late release need stop;
Release module, the session channel that the needs that are used for determining according to described session channel locating module stop discharges internal memory in the GR mode.
11. router as claimed in claim 10 is characterized in that, described router also comprises:
The internal storage warning trigger module is used to be provided with the condition of initiating internal storage warning;
Locating rule is provided with module, is used to be provided with locating rule, so that described session channel locating module need to determine the session channel of termination in view of the above.
12. router as claimed in claim 11 is characterized in that, described locating rule is provided with the locating rule that is provided with in the module and comprises:
The session channel that committed memory is maximum needing to be defined as the session channel of termination;
Perhaps, the session channel of article one routing iinformation correspondence of receiving after the alarm is defined as need the session channel that stops;
Perhaps, all session channels are defined as need the session channel of termination.
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| CNB200510137213XA CN100391164C (en) | 2005-12-31 | 2005-12-31 | Internal storage warning processing method and route of converting without discontinuous |
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| CNB200510137213XA CN100391164C (en) | 2005-12-31 | 2005-12-31 | Internal storage warning processing method and route of converting without discontinuous |
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| CN100391164C true CN100391164C (en) | 2008-05-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101345698B (en) * | 2007-07-10 | 2011-05-25 | 中兴通讯股份有限公司 | Synchronization method for grace reboot |
| CN101645768B (en) * | 2009-09-08 | 2013-02-27 | 中兴通讯股份有限公司 | Router and main/standby switch method thereof |
| CN101800694B (en) * | 2009-09-16 | 2012-07-25 | 福建星网锐捷网络有限公司 | Resource warning processing method and routing switching equipment |
| CN103457779B (en) * | 2013-09-10 | 2016-08-10 | 杭州华三通信技术有限公司 | A kind of method and device thereof carrying out path switching according to internal storage warning |
| CN117395189A (en) * | 2023-12-08 | 2024-01-12 | 新华三技术有限公司 | Routing processing method and device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154030A (en) * | 1996-10-22 | 1997-07-09 | 北京市电话局 | Centralized operation and maintenance system of program-controlled exchanger |
| WO2004040864A1 (en) * | 2002-10-30 | 2004-05-13 | Packetfront Sweden Ab | Method, router or switch for software and hardware packet flow forwarding |
| CN1505274A (en) * | 2002-12-04 | 2004-06-16 | 华为技术有限公司 | Expandable two-dimensional array arrangement and method for realizing route system hot backup using same |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154030A (en) * | 1996-10-22 | 1997-07-09 | 北京市电话局 | Centralized operation and maintenance system of program-controlled exchanger |
| WO2004040864A1 (en) * | 2002-10-30 | 2004-05-13 | Packetfront Sweden Ab | Method, router or switch for software and hardware packet flow forwarding |
| CN1505274A (en) * | 2002-12-04 | 2004-06-16 | 华为技术有限公司 | Expandable two-dimensional array arrangement and method for realizing route system hot backup using same |
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