Technical data

212 FastIron Ethernet Switch Administration Guide
53-1002637-02
LLDP-MED configuration
8
NOTE
On 48GC modules in non-jumbo mode, the maximum size of ping packets is 1486 bytes and the
maximum frame size of tagged traffic is no larger than 1581 bytes.
By default, the maximum frame size is automatically advertised when LLDP is enabled on a global
basis. To disable this advertisement, enter a command such as the following.
Brocade(config)#no lldp advertise max-frame-size ports e 2/4 to 2/12
The maximum frame size advertisement will appear similar to the following on the remote device,
and in the CLI display output on the Brocade device (show lldp local-info).
Maximum frame size: 1522 octets
Syntax: [no] lldp advertise max-frame-size ports ethernet port-list | all
Power-via-MDI
The power-via-MDI TLV provides general information about Power over Ethernet (POE) capabilities
and status of the port. It indicates the following:
• POE capability (supported or not supported)
• POE status (enabled or disabled)
• Power Sourcing Equipment (PSE) power pair – indicates which pair of wires is in use and
whether the pair selection can be controlled. The Brocade implementation always uses pair A,
and cannot be controlled.
• Power class – Indicates the range of power that the connected powered device has negotiated
or requested.
NOTE
The power-via-MDI TLV described in this section applies to LLDP. There is also a power-via-MDI TLV
for LLDP-MED devices, which provides extensive POE information. Refer to “Extended power-via-MDI
information” on page 224.
To advertise the power-via-MDI information, enter a command such as the following.
Brocade(config)#lldp advertise power-via-mdi ports e 2/4 to 2/12
The power-via-MDI advertisement will appear similar to the following on the remote device, and in
the CLI display output on the Brocade device (show lldp local-info).
Syntax: [no] lldp advertise power-via-mdi ports ethernet port-list | all
LLDP-MED configuration
This section provides the details for configuring LLDP-MED.
Table 14 lists the global and interface-level tasks and the default behavior/value for each task.
+ 802.3 Power via MDI: PSE port, power enabled, class 0
Power Pair : A (not controllable)