10-Gigabit Ethernet Switch Performance Testing - Ixia

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4. 10GE OSPF Convergence Test Objective. Verify the ability of a router to switch between preferred and lesspreferred routes on its 10GE ports when the preferred routes are withdrawn and readvertised. This will test the control plane function on the DUT’s 10GE line card. In this test, two 10GE ports simulate OSPF routers, Router 1 and Router 2. Both routers advertise the same route prefixes to the simulated network. However, the routes advertised by Router 1 will have smaller metrics (lower costs), which should cause the DUT to forward traffic over them instead of Router 2’s routes. After advertising the routes, the transmit port begins transmitting a stream of packets to an address in each of the advertised route prefixes. The DUT should forward all the packets over the route with the lower metric (Router 1). After a time interval has Figure 9. 10GE OSPF Convergence Test — setup. elapsed, the receive port simulating Router 1 withdraws its routes. The DUT should detect that the preferred route has gone down and switch traffic to Router 2’s routes. Router 1 then re-advertises its routes. The DUT should again detect a change re-route traffic to the receive port simulating Router 1. Setup. This test uses three test ports — one to transmit and two to receive (see Figure 9 below). One Ixia test port (acting as the transmit port) and two Ixia 10GE (test ports 1 and 2 acting as receive ports) connect to the DUT. Receive ports will emulate OSPF routers. The traffic is unidirectional. The DUT must have three ports utilized with two enabled for OSPF. All three ports should be configured for IP and have unique subnets in which to communicate with the tester ports. 10-Gigabit Ethernet Switch Performance Testing Copyright © 2004, Ixia 27
Results. The test results provide an average convergence time for all routes. Figure 10 below displays example results for the automated OSPF convergence test in Figure 10. 10GE OSPF Convergence Test — results. IxScriptMate. In addition to convergence time, this test also indicates the amount of lost packets caused by the convergence. 28 Copyright © 2004, Ixia 10-Gigabit Ethernet Switch Performance Testing
Page 1 and 2: Enabling a Converged World 10-Giga
Page 3 and 4: Copyright © 1998-2004 Ixia. All ri
Page 5 and 6: 4 Copyright © 2004, Ixia 10-Gigabi
Page 7 and 8: 10-Gigabit Ethernet LAN The biggest
Page 9 and 10: What Happens to a Packet When It En
Page 11 and 12: Metering and statistics recording P
Page 13 and 14: performing key searches in a matter
Page 15 and 16: Random Early Detection (RED) or Wei
Page 17 and 18: Developing the Right Test Methodolo
Page 19 and 20: Anticipating the behavior of the 10
Page 21 and 22: Ixia’s Test Solution Ixia provide
Page 23 and 24: Appendix: 10GE Testing Examples The
Page 25 and 26: 2. Testing for Latency: RFC 2544 La
Page 27: Methodology 1. Packets will be sent
Page 31: Ternary Content Addressable Memory

10-Gigabit Ethernet Switch Performance Testing - Ixia

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