ELSA Documentation


LAN-management-statistics

Statistics related to the structure and status of the complete LAN, including remote networks connected via wireless bridges (Point-to-Point-Connection, Bridge). The transfer within this network is realized via MAC addresses, i.e. on layer-2 of the OSI model. IP routing does not take place between the coupled networks; they are regarded as a single network.

When coupling subnetworks, ensure that packets always take one path through the network to avoid packet duplicates or even loops. The Spanning Tree Protocol (STP) prevents two simultaneously active paths between source and target devices and thus ensures reliable data communication within the network. Information on the status of the LANCOM device within the STP-controlled network can be found in several LAN management statistics.

Address table The MAC addresses of all known network devices in the complete network with information on the ports over which the devices can be reached.
Bridge ID Bridge ID of the local device, consisting of the priority identifier
(2 bytes) and its own MAC address.
Root bridge ID consisting of the priority identifier (2 bytes) and MAC address of the device negotiated as root bridge in the STP-controlled network. The root bridge is the device in the network with the highest prio, i.e. the lowest priority identifier number.
Root port Port over which the root bridge can be reached.
Root path cost Total "cost" of the network path to the root. The "cost" is a simple expression for the performance of a network path. It becomes in proportion to the speed and availability of the network path.
Port-data Table with the configuration parameters for the individual ports.
Encapsulation table Table with information on the encapsulation (framing) of each of the protocols recognized on the network.


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