Blade ICE G8124-E Manuale Utente

BMD00220, October 2010

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The BLADEOS software support Link Layer Discovery Protocol (LLDP). This chapter discusses 
the use and configuration of LLDP on the switch:

Link Layer Discovery Protocol (LLDP) is an IEEE 802.1AB-2005 standard for discovering and 
managing network devices. LLDP uses Layer 2 (the data link layer), and allows network 
management applications to extend their awareness of the network by discovering devices that are 
direct neighbors of already known devices.

With LLDP, the G8124 can advertise the presence of its ports, their major capabilities, and their 
current status to other LLDP stations in the same LAN. LLDP transmissions occur on ports at 
regular intervals or whenever there is a relevant change to their status. The switch can also receive 
LLDP information advertised from adjacent LLDP-capable network devices.

In addition to discovery of network resources, and notification of network changes, LLDP can help 
administrators quickly recognize a variety of common network configuration problems, such as 
unintended VLAN exclusions or mis-matched port aggregation membership.

The LLDP transmit function and receive function can be independently configured on a per-port 
basis. The administrator can allow any given port to transmit only, receive only, or both transmit 
and receive LLDP information.