CN103491013B - For supporting network system and the method for a large amount of ospf process - Google Patents
For supporting network system and the method for a large amount of ospf process Download PDFInfo
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Abstract
Embodiments of the invention provide that a kind of described network system includes: one or more line cards for supporting network system and the communication means of a large amount of ospf process, for from external reception bag, and dialogue-based table and described bag is dispatched to the ospf process of correspondence；Two or more panels, for receiving the described bag distributed by described line card, and perform OSPF process；Wherein a large amount of ospf process are distributed to multiple panel.By embodiments of the invention, a large amount of ospf process can be supported, and simultaneously under PE CE situation, does not haves any scalability problem.
Description
Technical field
The present invention relates to ospf (OSPF) agreement, exactly, relate to using
In network system and the method for supporting a large amount of ospf process.
Background technology
Ospf (OSPF) is designed to as Interior Gateway Protocol (IGP)
Link-state routing protocol.It means that it belong to single autonomous system (AS) router it
Between transmit routing iinformation.Ospf protocol is based on Link State or SPF SPF technology.
OSPF is also used as Provider edge router (PE) and customer edge router (CE)
Between IGP, these routers are parts for VPN(Virtual Private Network) solution, wherein
Need to support substantial amounts of VPN routing forwarding (VRF) with single pe router.
The pe router being attached to more than one ospf domain must run OSPF's for each territory
Separate instance.If OSPF is run by PE as IGP, then the OSPF run as IGP
Example must separate and independent of these examples with any other OSPF example that PE runs.Attached
The each interface belonging to a VPN site broadly falls at most one OSPF example.
VPN defines every website route forwarding table or the concept of VRF.Each VRF and a group interface
It is associated.If VRF is associated with special interface, and this interface belongs to specific OSPF example,
So this OSPF example is just said to be and is associated with described VRF.If two interfaces belong to identical
OSPF example, then the two interface is necessarily associated with identical VRF.If an interface will
PE is attached to CE, and this interface is associated with VRF, then just say described CE and described VRF
It is associated.
But, it has been found that the embodiment above can cause scalability problem, wherein single
The OSPF run on processing unit to support substantial amounts of process.
The OSPF in pe router in single panel cannot support substantial amounts of ospf process (this
It is probably a part of identical VRF or different VRF), thus cause and network occurs extensibility
Problem.
List of references 1 " second edition OSPF ", RFC2328.
List of references 2 " provider/customer edges the association as BGP/MPLS IP virtual private network
The OSPF of view ", RFC4577.
Summary of the invention
Embodiments of the invention relate to a kind of network system and communication means for supporting a large amount of process.
Target is to support a large amount of processes, and does not simultaneously have extensibility under PE-CE sight and performance is asked
Topic.
First aspect according to an embodiment of the invention, it is provided that one is used for supporting a large amount of ospf process
Network system, described network system includes:
One or more line cards, for from external reception bag, and dialogue-based table and described bag is divided
Task the ospf process of correspondence；
Two or more panels, for receiving the described bag assigned by described line card, and perform
OSPF process, the most substantial amounts of ospf process is distributed to said two or multiple panel.
Second aspect according to an embodiment of the invention, it is provided that one is used for supporting a large amount of ospf process
Method, described method includes:
By the one in line card from external reception bag, and dialogue-based table and described bag is dispatched to right
The ospf process answered；
Received the described bag assigned by described line card by the one in panel, and perform at OSPF
Reason, the most substantial amounts of ospf process is distributed to multiple panel.
It is an advantage of the current invention that a large amount of ospf process can be supported, thus in PE-CE feelings
Under scape, extensibility and performance can be improved.
With reference to the following description and drawings, these and other aspects of the present invention and feature are by aobvious and easy
See.Describing and in accompanying drawing, disclosing only certain embodiments of the present invention in detail, to indicate the present invention
Principle can with use some modes, it should be appreciated that the present invention be not limited to correspondence scope.Phase
Instead, all changes, amendment and the equivalence in the present invention includes the spirit of appended claims and item
Thing.
Describe with reference to an embodiment and/or the feature of explanation can use same way or similar fashion
For other embodiments one or more, and/or it is used in combination with the feature of other embodiments or substitutes this
A little features.
It is emphasized that term used in this specification " include " for explanation exist described feature,
Overall, step or parts, but be not precluded from existing or add other features one or more, entirety,
Step, parts or the combination of above-mentioned item.
The many aspects of the present invention be may be better understood with reference to the following drawings.Parts in accompanying drawing need not
Drawn to scale, but focus in the principle that the present invention is clearly described.In order to contribute to
Bright and describe the some parts of the present invention, the size of corresponding part in accompanying drawing can be amplified, such as,
For other parts so that it is bigger than the exemplary means according to actual fabrication of the present invention.This
Element and the feature described in a bright accompanying drawing or embodiment can be with one or more extra accompanying drawings
Or element and the feature described in embodiment combines.Additionally, in the accompanying drawings, identical reference numerals refers to
For the corresponding part in some views, and can be used to refer to identical in an above example or
Similar portions.
Accompanying drawing explanation
Accompanying drawing is included to provide a further understanding of the present invention, accompanying drawing to constitute this specification
A part, illustrates the preferred embodiments of the present invention, and is used for illustrating the present invention together with describing content
Principle.Ref. No. identical in accompanying drawing represents identical element all the time.
In the accompanying drawings:
Fig. 1 is the topological diagram of the representative instance illustrating ospf process；
Fig. 2 is the topology of the representative instance illustrating the OSPF supporting a large amount of VRF between PE and CE
Figure；
Fig. 3 is the schematic diagram of the network system of one embodiment of the present invention；
Fig. 4 is the schematic diagram of the network system of another embodiment of the present invention；
Fig. 5 is the schematic diagram processing route；
Fig. 6 is the schematic diagram of SMP command process；
Fig. 7 is the flow chart of the method for one embodiment of the present invention；
Fig. 8 is the flow chart of the method for another embodiment of the present invention；
Fig. 9 is the flow chart of the method for another embodiment of the present invention.
Detailed description of the invention
Many feature and advantage of each embodiment in detail specifications it is clear that therefore, appended power
Profit claim be intended to contain the embodiment belonged in its true spirit and scope these category features all and
Advantage.Additionally, due to those skilled in the art will readily occur to numerous modifications and variations, thus
It is not intended to invention embodiment is limited to exact configuration that is illustrated and that describe and operation, therefore, can
Belong in respective range with all suitably modified and equivalent taked.
Below with reference to accompanying drawing, the preferred embodiments of the present invention are described.
Nowadays, ospf process runs in single control plane.Fig. 1 is to illustrate ospf process
The topological diagram of representative instance.The OSPF current typical deployed in single control plane is as shown in Figure 1.
As it is shown in figure 1, have panel and line card in figure, and ospf process is just transported in panel
OK.When OSPF is used for supporting a large amount of process, a large amount of bag of process, control will be there is problems in that
Congested, disposal ability, memorizer etc. between making sheet and line card.
Fig. 2 is the topology of the representative instance illustrating the OSPF supporting a large amount of VRF between PE and CE
Figure.In this topology, OSPF is used between PE and CE.
As in figure 2 it is shown, there are many CE to be connected to single PE.It is positioned at single control plane at PE(
In) the middle OSPF run existing problems in terms of supporting a large amount of VRF requirements.
Update additionally, multiple ospf process exist LSA.Such as, OSPF needs process from
A large amount of LSA of many CE, and due to below this socket (socket) layer can become congested,
The most single control plane cannot be carried out processing.
Additionally, once socket layer starts buffers packet, then will cause controlling to go out between plane and line card
Existing congested.This can cause the bag process in OSPF more to postpone, additionally, it will lead to miss neighbours
The ACK sent.This situation increases causing the retransmission queue maintained in OSPF.Subsequently, whole
Therefore OSPF will slow down, and will affect comprehensive fusion of network.
Embodiment 1
This embodiment of the present invention provides a kind of for supporting the network system of a large amount of ospf process.
Fig. 3 is the schematic diagram of the network system of one embodiment of the present invention.
As it is shown on figure 3, network system 300 includes: one or more line cards 301, and two or
Multiple panels 302；Wherein line card 301 is used for from external reception bag, and dialogue-based table and incite somebody to action
Described bag is dispatched to the ospf process of correspondence；Panel 302 is used for receiving is assigned by line card 301
Described bag, and perform OSPF process.
In this embodiment, carrier-class router will have multiple panel, and substantial amounts of
Ospf process is distributed to the plurality of panel.
On pe router, number based on ospf process, the OSPF being distributed will stride across many
Individual control plane (panel).A large amount of ospf process can be supported, thus in PE-CE feelings
Under scape, extensibility and performance can be improved.
Fig. 4 is the schematic diagram of the network system of another embodiment of the present invention.As shown in Figure 4, net
Network system 400 includes: one or more line cards 401, and two or more panel 402.
In this embodiment, such as, there are three line cards and three panels, and ospf process
Number is 0-12K(0-4K, 4-8K, 8-12K).
As shown in Figure 4, described network system may further include: central authorities' routing manager (RM)
403, central authorities' routing manager 403 is used for receiving the routing iinformation of renewal, and by described route letter
Breath is redistributed to all panels；Wherein said routing iinformation be by panel 402 independent calculate and
Send.
In this embodiment, as shown in Figure 4, RM403 is in the inside of panel, but is not limited to
This, RM403 may be located at the outside (such as, in MB-3) of panel.
As shown in Figure 4, the conversational list of the relation with socket and interface is stored in each line card 401
In, and line card 401 meeting is by checking that bag is dispatched to the socket of correspondence by described conversational list, because of
And described bag arrives the panel of correspondence by corresponding socket.
In this embodiment, the number of processes that ability based on panel and needs are supported, OSPF
Multiple panel should be distributed to.
Additionally, maintenance is had ' conversational list ' of " socket-interface " relation by line card.Work as OSPF
When interfaces enabled, socket will be created according to interface.Renewal is arrived by this socket-interface mappings
All line cards.Incoming bag should be sent to corresponding panel by line card.
Specifically, described line card may further include: socket creating unit, relation update single
Unit, and information transmitting unit.Wherein said socket creating unit is for when OSPF is at interface
When enabling, create socket according to described interface；Described relation updating block for by socket with
The relation of interface updates all line cards；Described information transmitting unit is used for transmitting the packet to correspondence
Panel.
In one embodiment of the present invention, packet stream can change.Such as, for from peer-to-peer
Incoming bag, line card will wrap from described in external reception.By checking conversational list, described line card is by described bag
It is dispatched to the socket of correspondence, and described bag will arrive corresponding OSPF from described socket.
Additionally, the process to spreading out of bag would is that normal process, as single control plane.
Bag (LSA) is sent to peer-to-peer by each panel, and makees with other panels independently of one another
With, described bag is therefrom sent out simultaneously.
In another embodiment of the present invention, processing route can change.Fig. 5 is to process route
Schematic diagram, as it is shown in figure 5, each ospf process in panel will calculate independently route and
Update to RM.
Additionally, it (is all RPA such as them that described route is redistributed to all ospf process by RM
Equally).Each ospf process should notify RM, and it exists before.
In another embodiment of the present invention, System Management Plane (SMP) command process can change
Become.OSPF command process is required for the different address multi-process controlled in plane and changes.
In this embodiment, network system may further include System Management Plane (SMP).Institute
State SMP for sending SMP order；If the most described SMP order is overall situation SMP order,
The most described SMP order is dispatched to all panels, and if described SMP order is that process is peculiar
SMP order, the most described SMP order is dispatched to the panel of correspondence.
Additionally, described panel is further used for cannot be carried out the situation of process at existing ospf process
Under, create new ospf process based on load.
Fig. 6 is the schematic diagram of SMP command process, and as shown in Figure 6, SMP module needs and OSPF
Process and panel opening relationships.All of global command all will be dispatched to all OSPF.And process
Peculiar order will be dispatched to corresponding OSPF.
In this embodiment, when new process is configured by user, if existing OSPF cannot enter
Row processes, then will create the ospf process made new advances based on load
It can be seen that the present invention provides network system to support that a large amount of OSPF enters from above-described embodiment
Journey, mode is that ospf process is distributed to different control plane.A large amount of ospf process can obtain
Support, thus under PE-CE sight, extensibility and performance can be improved.
Embodiment 2
Embodiments of the invention further provide for a kind of method for supporting a large amount of ospf process.This
Embodiment is corresponding to the device in above-described embodiment, and identical content will no longer be described by.
Fig. 7 is the flow chart of the method for one embodiment of the present invention.As it is shown in fig. 7, described method
Including:
Step 701, line card from external reception bag, and dialogue-based table and described bag is dispatched to right
The ospf process answered；
Step 702, panel receives the described bag assigned by described line card, and performs at OSPF
Reason, the most substantial amounts of ospf process is distributed to multiple panel.
In this embodiment, number based on ospf process, the OSPF being distributed will stride across multiple
Control plane.A large amount of ospf process can be supported, thus under PE-CE sight, Ke Yiti
Enhanced scalability and performance.
In one embodiment of the present invention, packet stream can change.Fig. 8 is another reality of the present invention
Execute the flow chart of the method for example.As shown in Figure 8, described method includes:
Step 801, line card from external reception bag, and dialogue-based table and described bag is dispatched to right
The ospf process answered；
Step 802, panel receives the described bag assigned by described line card, and performs at OSPF
Reason, the most substantial amounts of ospf process is distributed to multiple panel.
As shown in Figure 8, described method may further include:
Step 803, central authorities' routing manager receives the routing iinformation updated, and by described route letter
Breath is redistributed to all panels；Wherein said routing iinformation be independently calculated by described panel and
Send.
In this embodiment, the conversational list of the relation with socket and interface is stored in each line card
In, and described line card is by checking that bag is dispatched to the socket of correspondence by described conversational list, thus
Described bag arrives the panel of correspondence by corresponding socket.
In this embodiment, step 802 may further include: when OSPF is when interfaces enabled,
Socket is created according to described interface；The relation of socket Yu interface is updated all line cards；With
And transmit the packet to the panel of correspondence.
In another embodiment of the present invention, processing route can change.Each in panel
Ospf process all calculates route by independent and update to RM.Described route is redistributed to by RM
All ospf process (as they are all RPA).Each ospf process should notify RM
Exist before it.
In another embodiment of the present invention, SMP command process can change.At OSPF order
Reason is required for the different address multi-process controlled in plane and changes.
Fig. 9 is the flow chart of the method for another embodiment of the present invention.As it is shown in figure 9, described side
Method includes:
Step 901, line card from external reception bag, and dialogue-based table and described bag is dispatched to right
The ospf process answered；
Step 902, panel receives the described bag assigned by described line card, and performs at OSPF
Reason, the most substantial amounts of ospf process is distributed to multiple panel.
As it is shown in figure 9, described method may further include:
Step 903, SMP module sends SMP order；If the most described SMP order is the overall situation
SMP order, the most described SMP order is dispatched to all panels, and if described SMP order is
Process peculiar SMP order, the most described SMP order is dispatched to the panel of correspondence.
As it is shown in figure 9, described method may further include:
Step 904, panel is in the case of existing ospf process cannot be carried out processing, based on negative
Carry and create new ospf process.
It can be seen that the present invention provides network system to support that a large amount of OSPF enters from above-described embodiment
Journey, mode is that ospf process is distributed to different control plane.A large amount of ospf process can obtain
Support, thus under PE-CE sight, extensibility and performance can be improved.
Embodiments of the invention further provide for a kind of computer-readable program, wherein when in network system
During the described program of middle execution, described program enables a computer to perform for supporting that a large amount of OSPF enters
The communication means of journey.
Embodiments of the invention further provide for a kind of storage the storage medium of computer-readable program,
Wherein said computer-readable program enables a computer to perform for supporting a large amount of ospf process
Communication means.
Should be understood that each several part of the present invention can be implemented by hardware, software, firmware or a combination thereof.
In the above-described embodiments, multiple steps or method can be come by the software stored in memory or firmware
Realize, and performed by suitable instruction execution system.Such as, if realized by hardware, that
Can be by the arbitrary technology in techniques below known to art as in another embodiment
Or a combination thereof realizes: have the logic function for realizing data signal discrete of logic gates
Logic circuit, there is the suitable special IC of combination logic gate circuit, programmable gate array
, and field programmable gate array (FPGA) etc. (PGA).
Description in flow chart or block or use any process of other forms or method it is understood that
Become to show to include one or more module, fragment or part, for realizing specific logical function or entering
The code of the executable instruction of step in journey, and the scope of the preferred embodiments of the present invention includes other
Embodiment, wherein these functions can by use from shown or described those different in the way of perform,
Including performing these functions in substantially simultaneous manner or in reverse order according to correlation function,
Relevant art skilled person will appreciate that foregoing.
Such as, in flow chart diagram or logic the most described otherwise above herein and/or step it is understood that
For the sequence list of the executable instruction for realizing logic function, it can be any computer-readable matchmaker
Body is implemented, for instruction execution system, device or equipment (such as, including system for computer,
Including the system of processor, or instruction can be extracted from instruction execution system, device or equipment and hold
Other systems of these instructions of row) use, or be combined with instruction execution system, device or equipment and make
With.
The description of above-mentioned word and accompanying drawing show the various features of the present invention.Should be understood that art
Technical staff can prepare suitable computer code, mentioned above and shown in the drawings each to perform
Step and process.Should also be understood that all of terminal, computer, server and network can be to appoint
What type, and preparing computer code can be carried out according to the present invention, with by using relevant device
Implement the present invention.
There is disclosed herein only certain embodiments of the present invention.Those skilled in the art will readily recognize that
Arrive, present invention could apply to other environment.It practice, there is many embodiments and embodiment.
Appended claims is not intended to scope of the invention is limited to above-mentioned specific embodiment.Additionally, appoint
What to " be used for ... device " to quote be all to add function at interpreting means, to describe element and power
Profit requirement, and be not intended to by any unreferenced " be used for ... device " element be interpreted as dress
Put the element adding function, even if claim includes that word " device " is also such.
Although having been illustrated with one or more specific preferred embodiment and having been described with this
Bright, it is apparent that, those skilled in the art is permissible after reading and understanding foregoing description and accompanying drawing
Expect equivalent modifications and modification.Especially for by said elements (partly, assembly, equipment and group
Become etc.) for the various functions that perform, unless otherwise defined, wish to describe these elements
Term (including quoting " device ") is corresponding to performing any unit of the specific function of these elements
Part (that is, functional equivalent), even if this element is different from the execution present invention with regard to illustrated by dependency structure
The element of function of one or more exemplary embodiment.Although additionally, only with reference to described embodiment
In the one or more particularly unique feature of the present invention that describes, but this category feature can the most also
In view of any given or favourable aspect of application-specific with other embodiments one or more other
Feature combines.
Claims (12)
1. it is used for supporting a network system for a large amount of OSPF (ospf) process,
Described network system includes:
One or more line cards, for from external reception bag, and dialogue-based table and described bag is divided
Task the ospf process of correspondence；
Two or more panels, for receiving the described bag assigned by described line card, and perform
OSPF process, the most substantial amounts of ospf process is distributed to said two or multiple panel.
Network system the most according to claim 1, wherein said network system farther includes:
Central authorities' routing manager, for receiving the routing iinformation of renewal, and by described routing iinformation weight
Newly it is distributed to all panels；Wherein said routing iinformation is independently to be calculated by described panel and send
's.
Network system the most according to claim 1, wherein has the socket relation with interface
Described conversational list is stored in each line card；
And described line card is by checking that described bag is dispatched to the socket of correspondence by described conversational list,
Thus described bag arrives the panel of correspondence by corresponding socket.
Network system the most according to claim 1, wherein said line card farther includes:
Socket creating unit, for when OSPF is when interfaces enabled, creates according to described interface
Build socket；
Relation updating block, for updating all line cards by the relation of described socket Yu interface；
Information transmitting unit, for transmitting the packet to the panel of correspondence.
Network system the most according to claim 1, wherein said network system farther includes:
System Management Plane, is used for sending System Management Plane (SMP) order；If it is the most described
SMP order is overall situation SMP order, and the most described SMP order is dispatched to all panels, and if
Described SMP order is process peculiar SMP order, and the most described SMP order is dispatched to the control of correspondence
Making sheet.
Network system the most according to claim 5, wherein said panel is further used for existing
In the case of having ospf process to cannot be carried out processing, create new ospf process based on load.
7. the method being used for supporting a large amount of OSPF (ospf) process, institute
The method of stating includes:
By the one in one or more line cards from external reception bag, and dialogue-based table and by described
Bag is dispatched to the ospf process of correspondence；
Received the described bag assigned by described line card by the one in two or more panels, and hold
Row OSPF process, the most substantial amounts of ospf process is distributed to multiple panel.
Method the most according to claim 7, wherein said method farther includes:
Received, by central authorities' routing manager, the routing iinformation updated, and described routing iinformation is divided again
Issue all panels；Wherein said routing iinformation is independently calculated by described panel and sends.
Method the most according to claim 7, wherein has the described of socket and the relation of interface
Conversational list is stored in each line card；
And described line card is by checking that described bag is dispatched to the socket of correspondence by described conversational list,
Thus described bag arrives the panel of correspondence by corresponding socket.
Method the most according to claim 7, the most dialogue-based table and described bag is dispatched to right
The ospf process answered farther includes:
When OSPF is when interfaces enabled, create socket according to described interface；
The relation of described socket Yu interface is updated all line cards；
Transmit the packet to the panel of correspondence.
11. methods according to claim 7, wherein said method farther includes:
System Management Plane (SMP) order is sent by System Management Plane；If the most described SMP
Order is overall situation SMP order, and the most described SMP order is dispatched to all panels, and if described
SMP order is process peculiar SMP order, and the most described SMP order is dispatched to the panel of correspondence.
12. methods according to claim 11, wherein said method farther includes:
In the case of existing OSPF cannot be carried out processing, create new OSPF based on load and enter
Journey.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ININ4042/CHE/2012 | 2012-09-28 | ||
| IN4042/CHE/2012 | 2012-09-28 | ||
| IN4042CH2012 | 2012-09-28 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455564A (en) * | 2003-06-19 | 2003-11-12 | 北京港湾网络有限公司 | Method for solving stability of OSPF protocol at multi-neighbour high route |
| CN1770743A (en) * | 2004-11-01 | 2006-05-10 | 朗迅科技公司 | Softrouter |
-
2013
- 2013-07-31 CN CN201310330207.0A patent/CN103491013B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1455564A (en) * | 2003-06-19 | 2003-11-12 | 北京港湾网络有限公司 | Method for solving stability of OSPF protocol at multi-neighbour high route |
| CN1770743A (en) * | 2004-11-01 | 2006-05-10 | 朗迅科技公司 | Softrouter |
Non-Patent Citations (1)
| Title |
|---|
| OSPF as the Provider/Customer Edge Protocol for BGP/MPLS IP Virtual Private Networks (VPNs);E. Rosen 等;《RFC4577》;20060630;全文 * |
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