Lldp overview – Brocade TurboIron 24X Series Configuration Guide User Manual
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Brocade TurboIron 24X Series Configuration Guide
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LLDP overview
Network connectivity device – A forwarding 802 LAN device, such as a router, switch, or wireless
access point.
Station – A node in a network.
TLV (Type-Length-Value) – An information element in an LLDPDU that describes the type of
information being sent, the length of the information string, and the value (actual information) that
will be transmitted.
TTL (Time-to-Live) – Specifies the length of time that the receiving device should maintain the
information acquired through LLDP in its MIB.
LLDP overview
LLDP enables a station attached to an IEEE 802 LAN/MAN to advertise its capabilities to, and to
discover, other stations in the same 802 LAN segments.
The information distributed by LLDP (the advertisement) is stored by the receiving device in a
standard Management Information Base (MIB), accessible by a Network Management System
(NMS) using a management protocol such as the Simple Network Management Protocol (SNMP).
The information also can be viewed from the CLI, using show LLDP commands.
illustrates LLDP connectivity
.
FIGURE 2
LLDP connectivity
I’m a PC
I’m a switch
I’m a switch
I’m a switch
I’m a switch
I’m a switch
I’m a switch
I’m a switch
I’m an IP Phone
I’m an IP Phone
I’m an IP Phone
I’m a PBX
port
device
info
A19
Switch
xxxx
C2
D2
F3
OP-PBX
IP-Phone
IP-Phone
xxxx
xxxx
xxxx
port
device
info
A4
IP-Phone
xxxx
B6
PC
xxxx
B21
Switch
xxxx