314 RackSwitch G8000: Application Guide
If SNMP trap notification is enabled, the notification messages can also appear in
the system log. This is enabled by default. To change whether the SNMP trap
notifications for LLDP events appear in the system log, use the following command:
Changing the LLDP Transmit State
When the port is disabled, or when LLDP transmit is turned off for the port using the
LLDP admin-status command options (see “Transmit and Receive Control” on
page 312), a final LLDP packet is transmitted with a time-to-live value of 0.
Neighbors that receive this packet will remove the LLDP information associated with
the G8000 port from their MIB.
In addition, if LLDP is fully disabled on a port and then later re-enabled, the G8000
will temporarily delay resuming LLDP transmissions on the port to allow the port
LLDP information to stabilize. The reinitialization delay interval can be globally
configured for all ports using the following command:
where
interval
is the number of seconds to wait before resuming LLDP
transmissions. The range is between 1 and 10. The default is 2 seconds.
Types of Information Transmitted
When LLDP transmission is permitted on the port (see “Enabling or Disabling LLDP”
on page 311), the port advertises the following required information in
type/length/value (TLV) format:
•Chassis ID
• Port ID
• LLDP Time-to-Live
LLDP transmissions can also be configured to enable or disable inclusion of
optional information, using the following command (Interface Port mode):
where
type
is an LLDP information option from Table 24:
RS G8000(config)# [no] logging log lldp
RS G8000(config)# lldp reinit-delay <interval>
RS G8000(config)# interface port 1
RS G8000(config-if)# [no] lldp tlv <type>
RS G8000(config-if)# exit
Table 24. LLDP Optional Information Types
Type Description
portdesc
Port Description
sysname
System Name
sysdescr
System Description
syscap
System Capabilities
mgmtaddr
Management Address
portvid
IEEE 802.1 Port VLAN ID
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