Configuring Lldp; Enabling And Disabling Lldp; Configuring The System Description Tlv Advertisement - Extreme Networks ExtremeWare XOS Guide Manual

Link Layer Discovery Protocol

Configuring LLDP

You configure LLDP per port. To configure LLDP, take the following steps:
1 Enable LLDP on the desired port(s).
2 If desired, configure the system not to advertise the system description TLV.
3 If you want to change any default values, configure the following values:
a Reinitialize period
b Transmit interval
c Transmit delay
d Transmit hold
4 Enable the SNMP traps and configure the notification interval.
5 Configure any optional TLV advertisements that you want included in the LLDPDU.
This section discusses how to configure LLDP using the CLI. Refer to ExtremeWare XOS Command
Reference Guide for complete information on configuring LLDP You can also reference the IEEE 892,1ab
standard.

Enabling and Disabling LLDP

LLDP is disabled on all ports by default. When you enable LLDP on the ports, you select whether the
ports will only transmit LLDP messages, only receive the messages, or both transmit and receive LLDP
messages.
To enable LLDP, use the following command:
enable lldp ports [all | <port_list>] {receive-only | transmit-only}
Once you enable LLDP, the following TLVs are automatically added to the LLDPDU:
Chassis ID
●
Port ID
●
TTL
●
System description
●
End of LLDPDU
●
All of these, except the system description, are mandated by the 802.1ab standard. Similarly, none of
these, except the system description, can be configured to advertise or not to advertise.
To disable LLDP, use the following command:
disable lldp ports [all | <port_list>] {receive-only | transmit-only}

Configuring the System Description TLV Advertisement

If you have not configured the system description using SNMP sysName prior to enabling LLDP, the
system sends the following information in the system description TLV:
ExtremeWare XOS version 11.2.0.12 v1120b12 by release-manager
on Fri Mar 18 16:01:08 PST 2005
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ExtremeWare XOS 11.3 Concepts Guide