Specifications

Network Configuration Specifics
237
LLDP-MED and using scopes
In many situations, especially where part of the network uses different LAN policy from other
parts, use of LLDP-MED may simplify network configuration. The appropriate LAN policy values
can be applied directly to the L2 switching gear in each section of the LAN separately, rather
than creating and managing multiple scopes in the DHCP server. Alternatively, a general policy
could be provided in DHCP servers and LLDP-MED used to override it locally in some segments.
Use of LLDP-MED to supply LAN policy also avoids the necessity to “double boot” at IP Phone
startup time (once to obtain the voice VLAN ID, then a second time to obtain an IP address
and other configuration on the voice VLAN). With this method, it may also be easier to use the
3300 embedded DHCP server to provide only the remaining configuration values, with LAN
policy coming from LLDP-MED, removing the need for any Mitel-specific configuration in 3rd
party DHCP servers.
LLDP-MED and network troubleshooting
Through SNMP MIBs defined by LLDP-MED, several highly useful tools are provided for
network troubleshooting by querying the L2 switching infrastructure through standard network
management tools (such as ProCurve Manager).
• Inventory Type Linked Values (TLVs) can be used to determine the VoIP endpoint’s man-
ufacturer, model, hardware, firmware, and software versions, etc.
• The device’s physical location can be determined using the Location Identification TLV (if
they have been configured into the L2 switch).
• Network policy issues can be identified by comparing the endpoint device’s and the switch’s
LAN policy in use, using the Network Policy TLV.
• LAN speed/duplex mismatches can be identified by comparing the MAC/PHY Configura-
tion/Status TLV for the L2 switch and the endpoint.
LLDP-MED can be used to report information about the attached phone. The list of phones
below will report the following information:
• The Hardware revision reports "PCB Version: ..."
• The Firmware revision reports "Boot ..."
• The Software revision reports "Main ..."
• The Manufacturer reports "Mitel Corporation"
The following phones support LLDP-MED and report the following Model names.
Table 71: Phones and LLDP-MED Names
Phone Model Name Reported in LLDP-MED
5212 Dual Mode “MITEL 5212 DM”
5215 Dual Mode "MITEL 5215 DM"
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