CN112187569B

CN112187569B - Multicast VPN (virtual private network) testing system and method in NG (NG) mode of electric power

Info

Publication number: CN112187569B
Application number: CN202010963218.2A
Authority: CN
Inventors: 胡婷; 霍雪松; 黄鑫; 李芹; 何晓阳; 崔瑶
Original assignee: State Grid Jiangsu Electric Power Co Ltd; NARI Group Corp; State Grid Electric Power Research Institute
Current assignee: State Grid Jiangsu Electric Power Co Ltd; NARI Group Corp; State Grid Electric Power Research Institute
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2022-05-10
Anticipated expiration: 2040-09-14
Also published as: CN112187569A

Abstract

The invention discloses a multicast VPN test system and method in an NG power mode, wherein the method comprises intra-domain multicast VPN networking test and cross-domain multicast VPN networking test; an mLDP tunnel is configured for intra-domain multicast VPN networking test to realize NG multicast VPN service in a single autonomous domain, and a label VPN-IPv4 route is issued among PE devices through MP-IBGP; the networking test of the cross-domain multicast VPN configures an Option B cross-domain mode to realize the inter-domain NG multicast VPN service, a backbone network can span the VPNs of a plurality of ASBRs, and the ASBRs are routed through an MP-EBGP release label VPN-IPv 4. The method adopts a multicast VPN networking framework based on an electric NG mode, combines the process and the state of BGP MVPN neighbor establishment and mLDP tunnel establishment, analyzes the multicast service forwarding function and performance in a multicast intra-domain/cross-domain mode, determines the service reliability of the electric multicast VPN system in the NG mode, and can effectively evaluate the multicast VPN service deployment of the electric power system.

Description

Multicast VPN (virtual private network) testing system and method in NG (NG) mode of electric power

Technical Field

The invention relates to a multicast VPN test system and method in an electric NG mode, and belongs to the technical field of communication test.

Background

The multicast VPN based on NG (Next Generation) mode is a new generation multicast technology for IP multicast data flow to pass through BGP/MPLS VPN network, provides signaling transfer mode and tunnel bearing mode based on BGP, opens multicast service through the existing BGP/MPLS IP VPN protocol, transfers the private network multicast data flow to the remote site of VPN through public network, and unifies multicast and unicast service in the same VPN structure.

Compared with the traditional multicast VPN technology in the Rosen mode, the multicast VPN in the NG mode uses BGP to transmit private network multicast protocol messages and private network multicast routes in a public network, other multicast protocols do not need to be configured, the network deployment complexity is simplified, and the difficulty of network maintenance is reduced. Meanwhile, the mature label forwarding technology and tunnel protection technology of MPLS are used, so that the service quality of the multicast service is higher, and the reliability is better.

MPLS VPN is widely deployed in power dispatching data networks as the most basic private line technology for communication VPN. At present, only unicast VPN services exist in the existing network, multicast VPN services are not opened temporarily, the multicast VPN networking scheme based on an NG mode is more suitable for the future development requirements of a scheduling data network in the face of the multicast service requirements of a provincial scheduling data network and the consideration of comprehensive safety and deployment complexity. The current multicast VPN test method for the network equipment of the power system mainly tests the most basic IGMP and PIM protocols, and lacks a system scheme for testing the multicast function, performance and networking of the network equipment.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a multicast VPN test system and method in an electric NG mode, which respectively verify the multicast protocol compatibility and performance reliability of network equipment in two networking environments, namely an intra-domain networking environment and a cross-domain networking environment, and have the advantages of simple test process and low requirements on the resource capacity and performance of a test instrument.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

the invention provides a multicast VPN test system of a power NG mode, which comprises: a multicast source, a multicast receiver, an access router and a backbone router;

the multicast source is simulated by adopting a tester multicast source interface, and the tester multicast source interface is connected with the access router to form a multicast access network;

the multicast receiver adopts the simulation of a tester multicast receiver interface, and the tester multicast receiver interface is connected with the access router to form a multicast receiver access network;

each access router is connected with a backbone router;

the backbone router connected with the access router in the multicast access network is connected with the other backbone routers to form a backbone network.

Furthermore, the test system configures the number of multicast source interfaces and the number of multicast receiver interfaces of the tester according to the test requirements.

Furthermore, the backbone router and the access router, the access router and the tester interface, and the backbone router are connected through 100M/1000M line interfaces.

The invention also provides a multicast VPN test method in an NG power mode, which comprises the following steps:

in a multicast VPN test environment of an electric NG mode, configuring intra-domain multicast VPN networking test topology;

based on the intra-domain multicast VPN networking test topology, carrying out protocol configuration on a multicast access network, a multicast receiver access network and a backbone network, and establishing a communication tunnel;

carrying out protocol test on the multicast access network, the multicast receiver access network and the backbone network, and testing the communication tunnel;

after the test is qualified, testing the connectivity of the multicast VPN service;

after the test is qualified, testing the multicast VPN performance;

and the number of the first and second groups,

configuring a cross-domain multicast VPN networking test topology in a multicast VPN test environment of an electric NG mode;

based on a cross-domain multicast VPN networking test topology, carrying out protocol configuration on a multicast access network, a multicast receiver access network and a backbone network, and establishing a communication tunnel;

and after the test is qualified, testing the multicast VPN performance.

Further, the multicast VPN test environment in the power NG mode includes: a multicast source, a multicast receiver, an access router and a backbone router;

each access router is connected with a backbone router;

Further, the configuring of the intra-domain multicast VPN networking test topology includes:

the backbone router is configured as PE equipment;

configuring OSPF by the access router; configuring an OSPF VPN example by a backbone router;

configuring AS numbers of all equipment autonomous systems in a backbone network and a multicast access network to be the same;

configuring the global MPLS (multi-protocol label switching) capability of a backbone router, establishing an LDP (local distribution protocol) neighbor through an interconnection physical interface, and establishing an MP-IBGP (multicast-broadcast gateway) neighbor through a loopback interface;

configuring a tester multicast source interface to simulate a multicast source; configuring a tester multicast receiver interface to simulate a multicast receiver;

configuring a backbone router accessed to a multicast access network to send PE roles for multicast VPN; and configuring a backbone router accessed to the multicast receiver access network to receive the PE role for the multicast VPN.

Further, the performing protocol configuration on the multicast access network, the multicast receiver access network and the backbone network based on the intra-domain multicast VPN networking test topology, and establishing a communication tunnel includes:

configuring a backbone router to establish an mLDP 2MP tunnel by adopting a physical interface; establishing a BGP MVPN neighbor relation by adopting a loopback interface;

configuring PIM-SM protocol for

access router interfaces

1 and 2 of multicast access network and multicast receiver access network;

configuring the access routers of the multicast recipient access network and the backbone router interface 2 of the backbone network enables IGMPv3 capabilities.

Further, the configuring the cross-domain multicast VPN networking test topology includes:

the backbone router is configured as an ASBR device;

configuring the AS numbers of the multicast access network and the AS autonomous system of the multicast receiver access network to be different;

configuring the global MPLS (multi-protocol label switching) capability of a backbone router, and establishing an LDP (local distribution protocol) neighbor and an MP-EBGP (MP-EBGP) neighbor based on an Option B mode on an interconnection physical interface;

configuring a backbone router accessed to a multicast access network to send an ASBR role for a multicast VPN; and configuring a backbone router accessing the multicast receiver access network to receive an ASBR role for the multicast VPN.

Further, the performing protocol configuration on the multicast access network, the multicast receiver access network and the backbone network based on the cross-domain multicast VPN networking test topology, and establishing a communication tunnel includes:

configuring a backbone router to establish an mLDP 2MP tunnel and a BGP MVPN neighbor relation by adopting a physical interface;

configuring PIM-SM protocol for

access router interfaces

1, 2 of multicast access network and multicast receiver access network;

Further, the protocol test for the multicast access network, the multicast receiver access network and the backbone network, and the test for the communication tunnel include:

an access router in a multicast access network is used as a multicast source end, an access route of an access network of a multicast receiver is used as a multicast receiving end, and PIM routing table information is checked on each access router;

the backbone router accessing the multicast access network is used as a source end for notifying multicast in the backbone network, the backbone router accessing the multicast receiver access network is used as a receiving end in the backbone network, and PIM routing table information, mLDP 2MP tunnel establishment conditions and BGP MVPN neighbor states are checked on each backbone router.

Further, the testing the connectivity of the multicast VPN service includes:

configuring VPN examples of a multicast access network and a multicast receiver access network;

the tester multicast source interface simulates a multicast source and sends a multicast stream;

observing the receiving condition of multicast service flow of the interface of the multicast receiver of the tester of the access network of the multicast receiver,

if the multicast access network and the multicast receiver access network are in the same VPN instance, the multicast receiver access network can receive multicast service flow; if the multicast access network and the multicast receiver access network are not in the same VPN instance, the multicast receiver access network cannot receive the multicast service flow.

Further, the testing the multicast VPN performance includes:

a) determining the maximum transmission rate which can be achieved by the test of forwarding multicast and unicast IP mixed flow simultaneously under the condition that the tested equipment does not lose packet; the tested equipment is an access router of a multicast access network, a backbone router of a backbone network and an access router of a multicast receiver access network;

b) on the premise of giving the number of multicast groups, testing the maximum rate at which the tested equipment can forward the multicast flow, and increasing the number of the multicast groups and the sending rate through the specified level to determine the equipment capacity; the tested equipment is an access router of a multicast access network, a backbone router of a backbone network and an access router of a multicast receiver access network;

c) on the premise of a given number of destination ports, testing the maximum rate at which the tested equipment can forward the multicast flow, and increasing the number of the destination ports and the sending rate by a specified level to determine the equipment capacity; the tested equipment is an access router of a multicast access network, a backbone router of a backbone network and an access router of a multicast receiver access network;

d) on the premise of no packet loss, testing the maximum rate which can be reached by the tested equipment which can be packaged and can correctly forward the data frame; the tested equipment is a backbone router accessed to the multicast access network;

e) on the premise of no packet loss, testing the maximum rate which can be reached by the tested equipment which can be unpacked and can correctly forward the data frame; the tested equipment is a backbone router accessed to the multicast receiver access network;

f) on the premise of no packet loss, testing the maximum rate which can be reached by the tested equipment for converting the frame in one packaging format into the frame in the other packaging format and correctly forwarding the data frame; the tested equipment is a backbone router accessed to the multicast access network;

g) the single time delay set from a single input port on the tested equipment to all destination ports of the multicast group comprises minimum, maximum and average multicast forwarding time delay; the tested equipment is an access router of a multicast access network, a backbone router of a backbone network and an access router of a multicast receiver access network;

h) testing the time from the successful sending of the IGMP membership report message to the tested device to the beginning of the sending of the multicast data message by the tested device; the tested equipment is an access router of a multicast access network;

i) testing the time from the successful reception of the IGMP leaving group message by the tested equipment to the stop of the forwarding of the corresponding multicast flow; the tested equipment is an access router of a multicast receiver access network;

j) testing the maximum multicast group number which can be reached by forwarding multicast data under the specified speed of the tested equipment; the tested devices are an access router of a multicast access network, a backbone router of a backbone network and an access router of a multicast receiver access network.

The invention has the beneficial effects that:

the invention adopts a multicast VPN networking framework based on an electric NG mode, combines the process and the state of BGP MVPN neighbor establishment and mLDP tunnel establishment, analyzes the multicast service forwarding function and the performance in a multicast intra-domain/cross-domain mode, can accurately identify the networking reliability of the electric multicast VPN network, is an effective inspection method, fills the current situation that the existing related project test method is lacked, comprehensively covers all networking scenes of the electric multicast VPN network, and meets the function and performance test requirements of electric multicast service operation.

Drawings

Fig. 1 is a multicast VPN test system according to an embodiment of the present invention;

FIG. 2 is a multicast VPN test logic architecture of the present invention;

fig. 3 is a flowchart of a multicast VPN test method in the NG power scheme according to the present invention.

Detailed Description

The invention is further described below. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The invention provides a multicast VPN test system of a power NG mode, which comprises: a multicast source, a multicast receiver, an access router and a backbone router.

Specifically, a tester interface is used to simulate a multicast source and a multicast receiver.

The number of the multicast source interfaces of the tester can be configured according to the test requirements, a plurality of multicast sources are simulated, and the multicast source interfaces of the tester are connected with one access router to form a multicast access network.

The number of the multicast receiver interfaces of the tester can be configured according to the test requirements, a plurality of multicast receivers are simulated, and each multicast receiver interface of the tester is connected with one access router to form a multicast receiver access network.

Specifically, the number of backbone routers is the same as the number of access routers.

Each access router is connected to a backbone router.

In particular, the method comprises the following steps of,

the backbone router and the access router, and the interfaces (multicast source interface and multicast receiver interface) of the access router and the tester are connected through 100M/1000M line interfaces to provide a testing basic physical environment.

Referring to fig. 1, in the embodiment of the present invention, a multicast VPN test system includes: multicast source, multicast receiver a, multicast receiver B, access router CE1, access router CE2, access router CE3, backbone router RT1, backbone router RT2, and backbone router RT 3.

The TC-Port1 interface of the tester simulates a multicast source, and the access router CE1 is connected with the TC-Port1 interface of the tester to form a multicast access network.

The TC-Port2 interface of the tester simulates the multicast receiver A, and the access router CE3 is connected with the TC-Port2 interface of the tester to form the access network 2.

The TC-Port3 interface of the tester simulates the multicast receiver B, and the access router CE2 is connected with the TC-Port3 interface of the tester to form the access network 3.

Backbone routers RT1, RT2 and RT3 form a backbone network, wherein a backbone router RT1 is connected with an access router CE 1; the backbone router RT2 is connected with the access router CE 3; the backbone router RT3 is connected to the access router CE 2. The backbone router RT1 connects the backbone router RT2 and the backbone router RT 3.

The access routers CE1, CE2, CE3 are the tested access nodes, and the backbone routers RT1, RT2, RT3 are the tested backbone nodes.

The access routers CE1, CE2, CE3 configure OSPF, and advertise the route of the multicast side to the backbone network through OSPF.

Backbone routers RT1, RT2 and RT3 configure OSPF VPN instances, and introduce VPN routes on CE side.

The topology is connected between the backbone router and the access router, and between the access router and the TC-Port interface of the tester through 100M/1000M line interfaces, so as to provide a testing basic physical environment.

building a multicast VPN test environment of an electric NG mode;

specifically, in the embodiment of the present invention, a test environment as shown in fig. 1 is set up, which includes a multicast source, a multicast receiver a, a multicast receiver B, an access router CE1, an access router CE2, an access router CE3, a backbone router RT1, a backbone router RT2, and a backbone router RT 3.

The TC-Port2 interface of the tester simulates the multicast receiver A, and the access router CE3 is connected with the TC-Port2 interface of the tester to form the multicast receiver access network 2.

The TC-Port3 interface of the tester simulates the multicast receiver B, and the access router CE2 is connected with the TC-Port3 interface of the tester to form the multicast receiver access network 3.

Based on the above test environment, the multicast VPN test in the NG power mode of the present invention includes intra-domain multicast VPN networking test, cross-domain multicast VPN networking test, and multicast performance test, as shown in fig. 2 and 3.

The intra-domain multicast VPN networking test method needs to configure a backbone network, AS numbers of all equipment autonomous systems of an access network 2 and an access network 3 are the same, LDP neighbors and MP-IBGP neighbors are established among backbone routers RT1, RT2 and RT3, and an intra-domain multicast VPN protocol based on an NG mode is configured. The test method comprises the following steps:

a) constructing an intra-domain multicast VPN networking test topology, wherein backbone nodes RT1, RT2 and RT3 are configured as PE (provider edge) equipment;

b) the access node CE1, CE2 and CE3 configure OSPF, and advertise the route of the multicast side to the backbone network through OSPF; nodes RT1, RT2 and RT3 configure OSPF VPN instances and introduce VPN routes of access nodes; configuring an access network 1 and an access network 2 as a VPN instance VPNA, wherein the Route-Target attribute of the VPNA is 1:1, configuring an access network 3 as a VPN instance VPNB, wherein the Route-Target attribute of the VPNB is 2: 2;

c) configuring AS numbers of all equipment autonomous systems of a backbone network and

access networks

2 and 3 to be 100; the RT1, the RT2 and the RT3 enable MPLS capacity globally, LDP neighbors are established through interconnected physical interfaces, and MP-IBGP neighbors are established through a Loopback interface;

d) configuring RT1, RT2 and RT3 to establish an mLDP (multipoint extensions for LDP) P2MP tunnel by using a physical interface, bearing multicast traffic, establishing a BGP MVPN neighbor relation by using a Loopback interface, transmitting an A-D route and a C-multicast route by a BGP protocol, and realizing automatic discovery of multicast members and tunnel establishment. Among them, RT1 is configured as multicast VPN Sender PE role, RT2, RT3 are configured as multicast VPN Receiver PE role.

e) Configuring a PIM-SM (protocol Independent Multicast router mode) protocol for access routers CE1, CE2, CE3 interfaces 1 and 2, and creating and maintaining a Multicast routing forwarding table entry; CE2, CE3, RT1, RT2, RT3 device interface 2 enable IGMPv3 ability, realize multicast joining or quitting at any time, and maintain multicast group membership.

f) The TC-Port1 interface of the tester simulates a multicast source, the TC-Port2 interface of the tester and the TC-Port3 interface of the tester simulate a multicast receiver, and the multicast receiver is added into a multicast group issued by the TC-Port 1;

g) the PIM routing table information is checked on receiving ends CE2, CE3 and a source end CE1 of the access network; PIM routing table information of VPN examples, mLDP 2MP tunnel establishment conditions and BGP MVPN neighbor states are checked on receiving ends RT2 and RT3 of a backbone network and a source end RT 1;

h) the TC-Port1 interface of the tester simulates the multicast source, sends the multicast stream, and observes the receiving condition of the multicast service stream of the TC-Port2 and the TC-Port 3. The TC-Port2 and the TC-Port1 are in the same VPN instance and should receive multicast service traffic, and the TC-Port3 and the TC-Port1 are not in the same VPN instance and should not receive multicast service traffic.

The cross-domain multicast VPN networking test method needs to configure three access network Autonomous Systems (AS) with different numbers, establishes the relation between an LDP neighbor and an MP-EBGP neighbor among backbone routers RT1, RT2 and RT3, and configures a cross-domain multicast VPN protocol based on an NG mode. The test method comprises the following steps:

a) constructing a cross-domain multicast VPN networking test topology, wherein the nodes RT1, RT2 and RT3 are configured as ASBR (automatic multicast System Border Router) equipment;

b) configuring OSPF by the CE1, CE2 and CE3 devices, and announcing the route of the multicast side to a backbone network through the OSPF; nodes RT1, RT2 and RT3 configure OSPF VPN instances, and introduce a VPN route at a CE side; configuring an access network 1 and an access network 2 as a VPN instance VPNA, wherein RT is 1:1, configuring an access network 3 as a VPN instance VPNB, and wherein RT is 2: 2;

c) configuring the AS number of an autonomous system of an access network 1 and a backbone node RT1 AS 100, the AS number of an autonomous system of an access network 2 and a backbone node RT2 AS 200, and the AS number of an autonomous system of an access network 3 and a node RT3 AS 300; the nodes RT1, RT2 and RT3 are configured with MPLS capability globally, and establish LDP neighbors and MP-EBGP neighbors based on an Option B mode on interconnection physical interfaces;

d) the RT1, the RT2 and the RT3 are configured to establish an mLDP 2MP tunnel and a BGP MVPN neighbor relation by using a physical interface. The RT1 is configured to have multicast VPN Sender ASBR role, and the RT2 and RT3 are configured to have multicast VPN Receiver ASBR role.

e) The access routers CE1, CE2, CE3 interfaces 1, 2 configure PIM-SM (protocol Independent Multicast spare mode) protocol; CE2, CE3, RT1, RT2, RT3 device interface 2 enables IGMPv3 capabilities.

h) the TC-Port1 interface of the tester simulates the multicast source, sends the multicast stream, and observes the receiving condition of the multicast service stream of the TC-Port2 and the TC-Port 3. The TC-Port2 and the TC-Port1 are in the same VPN instance and can receive multicast service flow, and the TC-Port3 and the TC-Port1 are not in the same VPN instance and can not receive the multicast service flow.

The multicast VPN performance test comprises a multicast throughput test, a multicast delay test and a multicast group capacity test, and the test method comprises the following steps:

a) mixed flow throughput testing: determining the maximum transmission rate which can be achieved by the tested equipment (CE 1, RT1, RT2 and CE 3) under the condition of no packet loss, and testing the multicast and unicast IP mixed traffic;

b) and (3) testing a proportion group forwarding matrix: on the premise of giving the number of multicast groups, testing the maximum rate at which the tested equipment (CE 1, RT1, RT2 and CE 3) can forward multicast traffic, and increasing the number of multicast groups and the sending rate through a specified level to determine the equipment capacity;

c) aggregate multicast throughput testing: on the premise of a given number of destination ports, testing the maximum rate at which the tested devices (CE 1, RT1, RT2 and CE 3) can forward multicast traffic, and increasing the number of destination ports and the transmission rate by a specified level to determine the device capability;

d) testing the packaging throughput: on the premise of no packet loss, testing the maximum rate which can be reached by the tested device (RT 1) which can be packaged and can correctly forward the data frame;

e) decapsulation throughput testing: on the premise of no packet loss, testing the maximum rate which can be reached by the tested equipment (RT 2) which can be unpacked and can correctly forward the data frame;

f) repackaging throughput testing: on the premise of no packet loss, testing the maximum rate which can be reached by the tested device (RT 1) to convert the frame of one packaging format into the frame of another packaging format and correctly forward the data frame;

g) and (3) multicast forwarding delay test: a set of single delays from a single ingress port on the device under test (CE 1, RT1, RT2, CE 3) to all destination ports of the multicast group, including minimum, maximum and average multicast forwarding delays, for testing the suitability of the device for multicast transmission;

h) and (3) multicast adding time delay test: testing the time utilized from the successful sending of the IGMP membership report message to the tested device (CE 1) to the beginning of the sending of the multicast data message by the tested device (CE 1);

i) multicast leave delay test: testing the time used by the tested device (CE 2) from successfully receiving the IGMP leave group message to stopping forwarding the corresponding multicast flow;

j) multicast group capacity test: and testing the maximum multicast group number which can be reached by the tested equipment (CE 1, RT1, RT2 and CE 3) to forward the multicast data at the specified rate.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims

1. A multicast VPN test method of a power NG mode is characterized by comprising the following steps:

the multicast VPN test environment of the power NG mode comprises the following steps: a multicast source, a multicast receiver, an access router and a backbone router; the multicast source is simulated by adopting a tester multicast source interface, and the tester multicast source interface is connected with the access router to form a multicast access network; the multicast receiver adopts the simulation of a tester multicast receiver interface, and the tester multicast receiver interface is connected with the access router to form a multicast receiver access network; each access router is connected with a backbone router; the backbone router connected with the access router in the multicast access network is connected with the rest backbone routers to form a backbone network;

the multicast VPN networking test topology in the configuration domain comprises the following steps: the backbone router is configured as a PE device; configuring OSPF by the access router; configuring an OSPF VPN example by a backbone router; configuring a backbone network and the AS numbers of all the equipment autonomous systems in the multicast access network to be the same; configuring the global MPLS (multi-protocol label switching) capability of a backbone router, establishing an LDP (local distribution protocol) neighbor through an interconnection physical interface, and establishing an MP-IBGP (multicast-broadcast gateway) neighbor through a loopback interface; configuring a tester multicast source interface to simulate a multicast source; configuring a tester multicast receiver interface to simulate a multicast receiver; configuring a backbone router accessed to a multicast access network to send a PE role for a multicast VPN; configuring a backbone router accessed to an access network of a multicast receiver to receive a PE role for a multicast VPN;

after the protocol test and the communication tunnel test are qualified, testing the connectivity of the multicast VPN service;

after the connectivity test of the multicast VPN service is qualified, testing the performance of the multicast VPN;

and the number of the first and second groups,

the configuration cross-domain multicast VPN networking test topology comprises the following steps: the backbone router is configured as an ASBR device; configuring OSPF by the access router; configuring an OSPF VPN example by a backbone router; configuring the AS numbers of the multicast access network and the AS autonomous system of the multicast receiver access network to be different; configuring the global MPLS (multi-protocol label switching) capability of a backbone router, and establishing an LDP (local distribution protocol) neighbor and an MP-EBGP (MP-EBGP) neighbor based on an Option B mode on an interconnection physical interface; configuring a tester multicast source interface to simulate a multicast source; configuring a tester multicast receiver interface to simulate a multicast receiver; configuring a backbone router accessed to a multicast access network to send an ASBR role for a multicast VPN; configuring a backbone router accessed to an access network of a multicast receiver to receive ASBR roles for a multicast VPN;

and after the connectivity test of the multicast VPN service is qualified, testing the performance of the multicast VPN.

2. The method of claim 1, wherein the number of multicast source interfaces and the number of multicast receiver interfaces of the tester are configured according to a test requirement.

3. The method of claim 1, wherein topology connection between the backbone routers and the access routers, between the access routers and the tester interface, and between the backbone routers is via 100M/1000M line interfaces.

4. The method according to claim 1, wherein the performing protocol configuration on the multicast access network, the multicast receiver access network, and the backbone network based on the intra-domain multicast VPN networking test topology, and establishing the communication tunnel comprises:

configuring PIM-SM protocol for access router interfaces 1 and 2 of multicast access network and multicast receiver access network;

5. The method according to claim 1, wherein the protocol configuration is performed on a multicast access network, a multicast receiver access network, and a backbone network based on a cross-domain multicast VPN networking test topology, and a communication tunnel is established, and the method comprises:

6. The method of claim 1, wherein the performing protocol tests on the multicast access network, the multicast receiver access network, and the backbone network and the testing on the communication tunnel comprises:

7. The method of claim 1, wherein the testing multicast VPN service connectivity comprises:

8. The method of claim 1, wherein the testing multicast VPN performance in a power NG scheme comprises: