254 BigIron RX Series Configuration Guide
53-1002253-01
LLDP overview
9
Figure 16 illustrates LLDP connectivity.
FIGURE 16 LLDP Connectivity
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, even within multiple VLANs, where all 
subnets may not be known
• Enables discovery of stations in multi-vendor environments
• Ensures proper aging so only valid network device data is presented
• Network Inventory Data
• Supports optional system name, system description, system capabilities and management 
address
• System description can contain the device’s 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 through LLDP can be used to detect speed and duplex mismatches
• Accurate topologies simplify troubleshooting within enterprise networks 
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 an IP Phone
I’m a PBX
port device
info
A19
Switch
xxxx
F3
OP-PBX
xxxx
port device
info
A4
IP-Phone
xxxx
B6
PC
xxxx
B21
Switch
xxxx