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692 PowerConnect B-Series FCX Configuration Guide
53-1002266-01
MIB support
24
FIGURE 119 TTL TLV packet format
MIB support
Dell PowerConnect devices support the following standard MIB modules:
• LLDP-MIB
• LLDP-EXT-DOT1-MIB
• LLDP-EXT-DOT3-MIB
• LLDP-EXT-MED-MIB
Syslog messages
Syslog messages for LLDP provide management applications with information related to MIB data
consistency and general status. These Syslog messages correspond to the lldpRemTablesChange
SNMP notifications. Refer to “Enabling LLDP SNMP notifications and syslog messages” on
page 697.
Syslog messages for LLDP-MED provide management applications with information related to
topology changes. These Syslog messages correspond to the lldpXMedTopologyChangeDetected
SNMP notifications. Refer to “Enabling SNMP notifications and syslog messages for LLDP-MED
topology changes” on page 708.
Configuring LLDP
This section describes how to enable and configure LLDP.
Table 123 lists the LLDP global-level tasks and the default behavior/value for each task.
TLV Type = 3
TLV Information
String Length = 2
Time to Live (TTL)
7 bits 9 bits 2 octets
TABLE 123 LLDP global configuration tasks and default behavior /value
Global task Default behavior / value when LLDP is enabled
Enabling LLDP on a global basis Disabled
Specifying the maximum number of LLDP
neighbors per device
Automatically set to 392 neighbors per device
Specifying the maximum number of LLDP
neighbors per port
Automatically set to 4 neighbors per port
Enabling SNMP notifications and Syslog messages Disabled
Changing the minimum time between SNMP traps
and Syslog messages
Automatically set to 2 seconds when SNMP notifications and
Syslog messages for LLDP are enabled