Overview of the latest route Exchange Technology

There are many things worth learning about Routing Switching Technology. Here we mainly introduce the practical application of the latest Routing Switching technology. The rapid development of Internet technology puts forward higher requirements for the infrastructure, IPTV services, network videos, IP phones, and other services require that network bandwidth and QoS be guaranteed; p2P services and spam are constantly consuming bandwidth and affecting the QoE metrics of normal services.

To meet users' increasing bandwidth and business needs. Operators and equipment manufacturers must strictly test the growing IP bearer network and the increasingly mature routing and exchange technology equipment, to ensure high capacity, high performance and high speed IP bearer network development requirements. The latest development of Route exchange technology, the traditional test content such as route table capacity test, exchange and forwarding capability test, and even oscillation test cannot meet the test requirements of high capacity, high performance, and a rich range of routing and switching technology devices. For example:

(1) The combination of OSPF and LDP promotes the development of VPLS technology;

(2) The integration of ISIS + RSVP + BGP and other protocols promotes the rapid application of L3VPN technology;

(3) The combination of OSPF + LDP + PIM + BGP promotes the development and wide application of Multicast VPN technology;

(4) Ethernet, FR, ATM, PPP, MPLS, and other access methods, edge Routers become "Service Router" by integrating different encryption or encapsulation forms, packet classification and filtering, and QoS re-marking technologies ".

Testing instruments can achieve multi-protocol integration and high scalability, which is the basic prerequisite for coping with these problems. The integration of technology requires the scalability of the Test Instrument in multiple aspects: the generation and analysis of traffic bandwidth, the speed and quantity of interfaces, and the ability to establish concurrent connections and connection rates, the number of routes generated, the number of established neighbors, and so on. Based on this, IXIA shares the latest routing exchange technologies and methods with readers. The test examples are the actual use cases of customers, including device manufacturers, operators, and large enterprise users.

Latest route Exchange Technology

Multicast VPN (mVPN) Testing Technology

The existing L3VPN can transmit Unicast (Unicast) traffic, or use the Point-to-Point GRE tunnel to transmit very small-scale Multicast (Multicast) traffic. The extensive application of IPTV, network video conferencing, and other Multicast services has greatly promoted the development of Multicast technology. Multicast VPN is a technology launched to solve the problem that mpls vpn is not suitable for transmitting Multicast services.

Technically, mVPN is extended based on L3VPN, and there are many similarities between the two. For example, the same routing protocol is used to update the routing information of each VRF (MVRF, the IGP protocol is also used between CE-PE, but there are many differences between the two technologies. Due to the complexity of mVPN technology, mVPN testing is also not simple, and the scalability of mVPN testing is even more challenging for testing instrument manufacturers. In order to have a good understanding of this, we will describe it with actual examples.

Figure 1 shows an IXIA instance tested by a carrier. Both Customer Edge (CE) and Provider Edge (PE) routers are simulated by IXIA instruments. Each port supports the simulation of Multiple Multicast VRFs (mVRFs), multiple PEs, and multiple P routers. In actual tests, one port on the IXIA XMV16 plate is simulated with up to 45601 PIM-SM/SSM Neighbors. This high performance can fully meet the needs of any mVPN scalability testing. As the only vendor currently capable of providing mVPN scalability testing, IXIA mVPN testing also has the following features:

(1) The simulation multicast source can be on the CE side (IXIA simulated port) or on the PE side (IXIA simulated P, PE, CE Network Testing port ).

◆ On the CE side, the device to be tested is the first PE connecting to the simulation CE. the device to be tested needs to build the Default MDT and monitor the traffic bandwidth of each multicast stream. If necessary, we also need to create a Data MDT and promptly convert the traffic from the Default MDT to the Data MDT. In this case, the device to be tested is the initiator of the Protocol control signaling, And the PE/CE of IXIA simulation is the responder.

◆ On the PE side, the PE/CE simulated by IXIA is responsible for establishing the Data MDT, And the IXIA port is responsible for establishing the forwarding path for the corresponding control signaling and Data traffic.

(2) The Configuration Wizard is used, which is easy to configure and easy to expand.

(3) IPv4 and IPv6 are supported.

(4) supports the Default MDT and Data MDT features.