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Configuring Switching
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SonicOS 5.7: Advanced Switching Feature Guide and Screencast Tutorial
On many switches and network devices, the LLDP information is stored as a management information
database (MIB). Simple Network Management Protocol (SNMP) is used to query the MIB for device
information, including system name, port name, VLAN name, IP address, system capabilities (such as
switching or routing), MAC address, and link aggregation settings. The topology of a network can be
discovered by crawling the hosts and querying the MIB database on each.
The LLDP transmitter is not implemented in SonicOS 5.7.0.0. The Switching > L2 Discovery page displays
Layer 2 information obtained via LLDP from other, LLDP-enabled, switches and devices in the network.
Figure 10 shows information obtained via discovery on the X1 (WAN) interface.
Figure 10 Switching > L2 Discovery Page
The Switching > L2 Discovery feature does not proactively manage the discovery. Discovery is active when
the system boots up and then does not restart unless you click the L2 Discovery refresh button in the
SonicOS management interface.
To restart Layer 2 discovery on multiple interfaces, you can select the checkbox next to the desired interfaces
and then click the Refresh Selected button at the bottom of the page, as shown in Figure 11.
Figure 11 Restarting Layer 2 Discovery on Selected Interfaces