352 PowerConnect B-Series FCX Configuration Guide53-1002266-01Metro Ring Protocol (MRP)10Using MRP diagnosticsThe MRP diagnostics feature calculates how long it takes for RHP packets to travel through the ring.When you enable MRP diagnostics, the software tracks RHP packets according to their sequencenumbers and calculates how long it takes an RHP packet to travel one time through the entire ring.When you display the diagnostics, the CLI shows the average round-trip time for the RHP packetssent since you enabled diagnostics. The calculated results have a granularity of 1 microsecond.Enabling MRP diagnosticsTo enable MRP diagnostics for a ring, enter the following command on the Master node, at theconfiguration level for the ring.PowerConnect(config-vlan-2-mrp-1)#diagnosticsSyntax: [no] diagnosticsNOTEThis command is valid only on the master node.Displaying MRP diagnosticsTo display MRP diagnostics results, enter the following command on the Master node.Syntax: show metro diagThis display shows the following information.TABLE 61 CLI display of MRP ring diagnostic informationThis field... Displays...Ring id The ring ID.Diag state The state of ring diagnostics.RHP average time The average round-trip time for an RHP packet on the ring. Thecalculated time has a granularity of 1 microsecond.Recommended hello time The hello time recommended by the software based on the RHP averageround-trip time.Recommended Prefwing time The preforwarding time recommended by the software based on theRHP average round-trip time.PowerConnect#show metro 1 diagMetro Ring 1 - CustomerA=============diagnostics resultsRing Diag RHP average Recommended Recommendedid state time(microsec) hello time(ms) Prefwing time(ms)2 enabled 125 100 300Diag frame sent Diag frame lost1230 0
