RUGGEDCOM ROX II
CLI User Guide
Chapter 15
Network Discovery and Management
Managing LLDP 663
Network Discovery and
Management
RUGGEDCOM ROX II supports the following protocols for automatic network discovery, monitoring and device
management:
• Link Layer Device Protocol (LLDP)
Use LLDP to broadcast the device's network capabilities and configuration to other devices on the network, as
well as receive broadcasts from other devices.
• Simple Network Management Protocol (SNMP)
Use SNMP to notify select users or groups of certain events that happen during the operation of the device, such
as changes to network topology, link state, spanning tree root, etc.
• Network Configuration Protocol (NETCONF)
Use NETCONF to remotely download, upload, change, and delete configuration data on the device.
CONTENTS
• Section15.1, “Managing LLDP”
• Section15.2, “Managing SNMP”
• Section15.3, “Managing NETCONF”
Section15.1
Managing LLDP
RUGGEDCOM ROX II supports the Link Layer Discovery Protocol (LLDP), a Layer 2 protocol for automated network
discovery.
LLDP is an IEEE standard protocol (IEEE 802.11AB) that allows a networked device to advertise its own basic
networking capabilities and configuration. It can simplify the troubleshooting of complex networks and can be
used by Network Management Systems (NMS) to obtain and monitor detailed information about a network’s
topology. LLDP data are made available via SNMP (through support of LLDP-MIB).
LLDP allows a networked device to discover its neighbors across connected network links using a standard
mechanism. Devices that support LLDP are able to advertise information about themselves, including their
capabilities, configuration, interconnections, and identifying information.
LLDP agent operation is typically implemented as two modules: the LLDP transmit module and LLDP receive
module. The LLDP transmit module, when enabled, sends the local device’s information at regular intervals, in
802.1AB standard format. Whenever the transmit module is disabled, it transmits an LLDPDU (LLDP data unit)
with a time-to-live (TTL) TLV containing 0 in the information field. This enables remote devices to remove the
information associated with the local device in their databases. The LLDP receive module, when enabled, receives
information about remote devices and updates its LLDP database of remote systems. When new or updated
information is received, the receive module initiates a timer for the valid duration indicated by the TTL TLV in the
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