Dell PowerConnect B-FCXs Configuration Manual page 732

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General operating principles
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Mandatory TLVs
When an LLDP agent transmits LLDP packets to other agents in the same 802 LAN segments, the
following mandatory TLVs are always included:
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•
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This section describes the above TLVs in detail.
Chassis ID
The Chassis ID identifies the device that sent the LLDP packets.
There are several ways in which a device may be identified. A chassis ID subtype, included in the
TLV and shown in
TABLE 121
ID subtype
0
1
2
3
4
5
6
7
8 – 255
Dell PowerConnect devices use chassis ID subtype 4, the base MAC address of the device. Other
third party devices may use a chassis ID subtype other than 4. The chassis ID will appear similar to
the following on the remote device, and in the CLI display output on the Dell PowerConnect device
(show lldp local-info).
The chassis ID TLV is always the first TLV in the LLDPDU.
Port ID
The Port ID identifies the port from which LLDP packets were sent.
There are several ways in which a port may be identified, as shown in
subtype, included in the TLV, indicates how the port is being referenced in the Port ID field.
690
Location identification
Extended power-via-MDI
Chassis ID
Port ID
Time to Live (TTL)
Table 121, indicates how the device is being referenced in the Chassis ID field.
Chassis ID subtypes
Description
Reserved
Chassis component
Interface alias
Port component
MAC address
Network address
Interface name
Locally assigned
Reserved
Chassis ID (MAC address): 0012.f233.e2c0
PowerConnect B-Series FCX Configuration Guide
Figure 122. A port ID
53-1002266-01