Brocade FastIron Ethernet Switch Administration Guide User Manual
Page 186
The MAC/PHY configuration 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 ).
+ 802.3 MAC/PHY : auto-negotiation enabled
Advertised capabilities: 10baseT-HD, 10baseT-FD, 100baseTX-HD, 100baseTX-FD,
fdxSPause, fdxBPause, 1000baseT-HD, 1000baseT-FD
Operational MAU type: 100BaseTX-FD
Syntax:[no] lldp advertise mac-phy-config-status ports ethernet port-list | all
Maximum frame size
The maximum frame size TLV provides the maximum 802.3 frame size capability of the port. This
value is expressed in octets and includes the four-octet Frame Check Sequence (FCS). The default
maximum frame size is 1522. The advertised value may change depending on whether the
aggregated-vlan or jumbo CLI commands are in effect.
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.
device(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
on page 197.
To advertise the power-via-MDI information, enter a command such as the following.
device(config)#lldp advertise power-via-mdi ports e 2/4 to 2/12
LLDP and LLDP-MED
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FastIron Ethernet Switch Administration Guide
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