PMP 450 Configuration and User Guide
Task 4: Configuring General and Unit
settings
pmp-0050 (May 2012)
2-45
Attribute
Meaning
Multicast Destination
Address
Using Link Layer Discovery Protocol (LLDP), a module exchanges
multicast addresses with the device to which it is wired on the
Ethernet interface. Although some switches (CMMmicro, for
example) do not pass LLDP addresses upward in the network, a
radio can pass it as the value of the
Multicast Destination Address
parameter value in the connected device that has it populated.
In this way, an SM can report to Prizm, for example, the multicast
address of a connected remote AP, and thus allow Prizm to discover
that AP. To allow this, set the message mode in the remote AP to
LLDP Multicast
. The SM will pass this address in broadcast mode,
and the CMMmicro will pass the address upward in the network,
since it does not discard addresses that it receives in broadcast mode.
Where the AP is not behind another device, the
Broadcast
mode will
allow discovery of the AP.
DHCP Relay Agent
The AP may act as a DHCP relay for SMs and CPEs underneath it.
The AP will make use of the DHCP Option 82 (DHCP Relay Agent
Information) from RFC 3046 when performing relay functions. The
AP offers two types of DHCP relay functionality:
Full Relay Information
. Configuring the DHCP Full Relay
Operation will take broadcast DHCP packets and send them to a
Unicast server in unicast mode. This way the DHCP requests and
replies can be routed like any other UDP packet.
Only Insert Option 82
. This option leaves the DHCP request on its
broadcast domain as opposed to DHCP Full Relay Operation which
will turn it into a unicast packet.
In order to accommodate setting up pools or classes for different
VLANs, the Option 82 field will include information to tell the server
what VLAN the client is on.
DHCP Server (Name or
IP Address)
The DHCP relay server may be either a DNS name or a static IP
address in dotted decimal notation. Additionally the management
DNS domain name may be toggled such that the name of the DHCP
relay server only needs to be specified and the DNS domain name is
automatically appended to that name. The default DHCP relay
server addresses is 255.255.255.255 with the appending of the DNS
domain name disabled.
Coordinates
Physical radio location data may be configured via the
Latitude
,
Longitude
, and
Height
fields.
Summary of Contents for PMP 450
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