Brocade BigIron RX Series Configuration Guide User Manual
Page 336
258
BigIron RX Series Configuration Guide
53-1002484-04
General operating principles
9
Brocade 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 Brocade device (show lldp
local-info).
Chassis ID (MAC address): 0012.f233.e2c0
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
. A port ID subtype,
included in the TLV, indicates how the port is being referenced in the Port ID field.
Brocade devices use port ID subtype 3, the permanent MAC address associated with the port.
Other third party devices may use a port ID subtype other than 3. The port ID appears similar to the
following on the remote device, and in the CLI display output on the Brocade device (show lldp
local-info).
Port ID (MAC address): 0012.f233.e2d3
The LLDPDU format is shown in
2
Interface alias
3
Port component
4
MAC address
5
Network address
6
Interface name
7
Locally assigned
8 – 255
Reserved
TABLE 63
Port ID subtypes
ID Subtype
Description
0
Reserved
1
Interface alias
2
Port component
3
MAC address
4
Network address
5
Interface name
6
Agent circuit ID
7
Locally assigned
8 – 255
Reserved
TABLE 62
Chassis ID subtypes (Continued)
ID Subtype
Description