Configuration Notes And Considerations - Dell PowerConnect B-RX Configuration Manual

9
Configuring LLDP
TABLE 61
Global task
Enabling LLDP on a global basis
Specifying the maximum number of LLDP
neighbors per device
Specifying the maximum number of LLDP
neighbors per port
Enabling SNMP notifications and Syslog messages
Changing the minimum time between SNMP traps
and Syslog messages
Enabling and disabling TLV advertisements
Changing the minimum time between LLDP
transmissions
Changing the interval between regular LLDP
transmissions
Changing the holdtime multiplier for transmit TTL
Changing the minimum time between port
reinitializations

Configuration notes and considerations

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LLDP global configuration tasks and default behavior / value
LLDP is supported on Ethernet interfaces only.
If a port is 802.1X-enabled, the transmission and reception of LLDP packets will only take
place while the port is authorized.
Cisco Discovery Protocol (CDP) and Foundry Discovery Protocol (FDP) run independently of
LLDP. Therefore, these discovery protocols can run simultaneously on the same device.
By default, the Brocade device limits the number of neighbors per port to four, and staggers
the transmission of LLDP packets on different ports, in order to minimize any high-usage
spikes to the CPU.
By default, the Brocade device forwards
Ports that are in blocking mode (spanning tree) can still receive LLDP packets from a
forwarding port.
To avoid trunk group configuration conflicts, a Syslog message is generated when individual
ports have been previously configured by LLDP.
Auto-negotiation status indicates what is being advertised by the port for 802.3
auto-negotiation.
Default behavior / value when LLDP is enabled
Disabled
Automatically set to 392 neighbors per device
Automatically set to 4 neighbors per port
Disabled
Automatically set to 2 seconds when SNMP notifications and
Syslog messages for LLDP are enabled
When LLDP transmit is enabled, by default, the Brocade
device will automatically advertise LLDP capabilities, except
for the system description, VLAN name, and power-via-MDI
information, which may be configured by the system
administrator.
Also, if desired, you can disable the advertisement of
individual TLVs.
Automatically set to 2 seconds
Automatically set to 30 seconds
Automatically set to 4
Automatically set to 2 seconds
BigIron RX Series Configuration Guide
53-1002253-01