BGP/L3VPN Conformance and Performance ... - Syrus Systems

Input parametersTable 1.VRF isolation scalability test parameters.ParametersRoute Distinguisher(RD)Route Targets Import/ExportIGP/MPLS protocolDescriptionRoute Distinguishers are used primarily to distinguish routesespecially in overlapping VPN scenarios. The RouteDistinguisher is made up of two parts, the “Admin part” and“AS number”.Route targets are appended to prefixes to establish destinationVRFs and for import/export policies. This is applied to VPNprefixes to allow for import to other receiving VPN instances.IGP is the interior gateway protocol used to distribute theloopback address, and the MPLS protocol is used for signalingthe LSP to destination loopback.Methodology1. CE tester port 1 brings up an IGP orcustomer speaking protocoladvertising prefixes. The controlplane is established; a peer orneighbor is adjacent representing acustomer site or VPN acting CE.Figure 2 shows an exampleconfiguration of IGP and MPLSprotocol.2. CE tester port 2 is configured similarto step 1 with CE emulationadvertising a unique set of prefixesto the DUT.3. The tester sends traffic to each prefixadvertised in the VRF from eachemulated CE.4. Adding emulated CEs from the testtool protocol configuration scalesthis test. The configuration ismatched on the DUT. Pairs of CEs areadded to increase the VPN numberand scale.5. Inject traffic flows to verify that eachroute is available as the test isscaled. Increase the number of CEsin the test until the desired size ofnetwork is successfully achieved.4 Copyright © Ixia, 2004 BGP/L3VPN Conformance and Performance Testing: Sample Test Plans