ExtremeWare XOS 11.5 supports only the Summit X450 family of switches and the BlackDiamond 8800 series switch.
ExtremeWare XOS 11.5 Command Reference Guide
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7
Commands for Configuring LLDP
Beginning with ExtremeWare XOS version 11.2, the software supports the Link Layer Discovery
Protocol (LLDP). LLDP provides a standard method of discovering and representing the physical
network connections of a given network management domain. LLDP works together with Extreme
Discovery Protocol (EDP). LLDP works together with Extreme Discovery Protocol (EDP); it also works
independently, you do not have to run EDP to use LLDP. The LLDP neighbor discovery protocol allows
you to discover and maintain accurate network topologies in a multivendor environment.
The one-way protocol LLDP protocol transmits periodic advertisements containing device information
and media-specific configuration information to neighbors attached to the same network. LLDP agents
cannot solicit information from other agents by way of this protocol. The type length value (TLV) format
with link layer control frames is used to communicate with other LLDP agents. LLDP agents also
receive link layer control frames, extract the information in TLVs, and store them in LLDP MIB objects.
You configure LLDP per port, and each port can store received information for a maximum of four
neighboring ports. All LLDP configurations are saved across reboots when you issue the
save
configuration
command.
NOTE
Because each LLDP protocol data unit (LLDPDU) is limited to 1500 bytes, the system drops configured optional
TLVs that exceed this limit. To see if your system is dropping TLVs, issue the
show lldp statistics
command.
Beginning with ExtremeWare XOS version 11.5, you can configure the switch for the following
additional types of LLDP TLVs:
●
Avaya-Extreme Networks proprietary TLVs
These TLVs are proprietary to Avaya and Extreme Networks; they do not work on other vendors’
devices. Some proprietary TLVs can only be received by the switch; they cannot be transmitted.
(Refer to the
ExtremeWare XOS Concepts Guide
for a complete listing of these TLVs.)
●
LLDP MED TLVs
These are the LLDP media endpoint discovery (MED) messages. After they are enabled, the LLDP
MED TLVs are transmitted only
after
the switch
detects
a neighbor transmitting LLDP MED TLVs.
Some LLDP MED TLVs can only be received by the switch; they cannot be transmitted. (Refer to the
ExtremeWare XOS Concepts Guide
for a complete listing of these TLVs.)
