Benefits of lldp, General operating principles, Operating modes – Brocade TurboIron 24X Series Configuration Guide User Manual
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Brocade TurboIron 24X Series Configuration Guide
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General operating principles
Benefits of LLDP
LLDP provides the following benefits:
•
Network Management:
•
Simplifies the use of and enhances the ability of network management tools in
multi-vendor environments
•
Enables discovery of accurate physical network topologies such as which devices are
neighbors and through which ports they connect
•
Enables discovery of stations in multi-vendor environments
•
Network Inventory Data:
•
Supports optional system name, system description, system capabilities and management
address
•
System description can contain the device product name or model number, version of
hardware type, and operating system
•
Provides device capability, such as switch, router, or WLAN access port
•
Network troubleshooting:
•
Information generated by LLDP can be used to detect speed and duplex mismatches
•
Accurate topologies simplify troubleshooting within enterprise networks
•
Can discover devices with misconfigured or unreachable IP addresses
General operating principles
LLDP use the services of the Data Link sublayers, Logical Link Control and Media Access Control, to
transmit and receive information to and from other LLDP Agents (protocol entities that implement
LLDP).
LLDP is a one-way protocol. An LLDP agent can transmit and receive information to and from
another LLDP agent located on an adjacent device, but it cannot solicit information from another
LLDP agent, nor can it acknowledge information received from another LLDP agent.
Operating modes
When LLDP is enabled on a global basis, by default, each port on the Brocade device will be
capable of transmitting and receiving LLDP packets. You can disable a port’s ability to transmit
and receive LLDP packets, or change the operating mode to one of the following:
•
Transmit LLDP information only
•
Receive LLDP information only
Transmit mode
An LLDP agent sends LLDP packets to adjacent LLDP-enabled devices. The LLDP packets contain
information about the transmitting device and port.