200 CHAPTER 5: PATH BUILDER S330 DIAGNOSTICS AND PERFORMANCE STATISTICSSpanning Tree StatisticsThe Spanning Tree Statistics screen displays the following statistics:Bridge Identifier — The bridge address of the Ethernet portRoot Bridge — The bridge root address of the Ethernet portDesignated Bridge ID — The designated Spanning Tree bridge ID of this portHello Time — The time interval between issuing STP (Spanning Tree Protocol)configuration messagesForward Delay — The amount of time in the “learning” and “listening” states;half the amount of time that must elapse between the time when it is decidedthat a port should become part of the Spanning Tree and the time when datatraffic is allowed to be forwarded to and from that portMaximum Age — The time at which a configuration message is discardedPort Identifier — The bridge root port of the Ethernet portRoot Path Cost — The bridge root path cost of the Ethernet portRoot Port — The bridge root port of the Ethernet port.Designated Port ID — The designated Spanning Tree bridge port ID of this portBr Topology Changed — The topology change state of Spanning Tree for thisportBr Topology Changed Count — The number of topology changes of SpanningTree for this portTotal Forward Transitions — The total number of times this port hastransitioned from the learning state to the forwarding stateTotal BridgeUp Time — The total amount of time that this port has been up aspart of the Spanning Tree bridgeIP over ATM StatisticsThe IP Over ATM Statistics screen displays the following statistics:ARP StatusLAN Router—The IP address of the LAN router that passes the IP traffic over theATM network.MAC Addr—The MAC address of the LAN router that passes the IP traffic overthe ATM network.ATM Router—The IP address of the ATM router that passes the IP traffic over theATM network.LAN Side StatisticsReceived IP Packets—The total number of IP packets received on the port.Forward IP Packets—The total number of IP packets received from the port andforwarded.Discarded IP Packets—The total number of IP packets received from the port anddropped.RX ARP Request—The total number of ARP request packets received on the port.RX ARP Reply—The total number of ARP response packets received on the port.
