32 Chapter 1 General System Monitoring ConsiderationsField DescriptionUnitNoResourcesPktsDropped The number of packets dropped on stack up/down ports on thisunit due to a lack of resources.Graphing switch chassis dataThe JDM provides the ability to view switch statistical information in avariety of graphs.To make use of these capabilities, open the Graph Chassis screen byselecting Graph > Chassis from the menu. This screen is illustrated below.Graph Chassis screenThe following sections describe the informational tabs on this screen andthe type of data each represents. Refer to "Creating a graph" (page 69) forthe procedure to graph this data.SNMP tabThe SNMP tab provides read-only statistical information about SNMP traffic.To view the SNMP tab, follow this procedure:Step Action1 Open the Graph Chassis screen by selecting Graph > Chassisfrom the menu. The Graph Chassis screen opens with the SNMPtab selected. This screen is illustrated below.Nortel Ethernet Routing Switch 5500 SeriesConfiguration - System MonitoringNN47200-505 03.01 Standard5.1 27 August 2007Copyright © 2005 - 2007, Nortel Networks.