Product Info

Chapter 5: Troubleshooting Logs

Page

Term

Definition

DiffServ Differentiated Services, consistent with RFC 2474. A byte in the type of

service (TOS) field of packets whose values correlates to the channel on

which the packet should be sent. The value is a numeric code point. The

PMP 450 AP’s support four levels of QoS. The mapping of these eight

priority values to data channels is determined by the number of data

channels configured per SM as shown in the table below:

For example, for an AP that uses the default table shown above has

configured 3 QoS levels per SM, would see codepoints 0 through 15

mapped to the Low Priority data channels, codepoint 16 would be

mapped to the Medium Priority data channels, and so on.

Note that CodePoints 0, 8, 16, 24, 32, 48, and 56 are predefined to the

fixed values shown in Table 20 and are not user configurable. Operator

cannot change any of these fixed priority values. Among the

configurable parameters, the priority values (and therefore the handling

of packets in the high or low priority channel) are set in the AP/BHM for

all downlinks within the sector and in the SM/BHS for each uplink.

DMZ Demilitarized Zone as defined in RFC 2647. An Internet Protocol area

outside of a firewall. See http://www.faqs.org/rfcs/rfc2647.html

Dynamic Frequency

Selection

A requirement in certain countries and regions for systems to detect

interference from other systems, notably radar systems, and to avoid

co-channel operation with these systems.

Dynamic Host

Configuration Protocol

See DHCP.

Electronic Serial Number Hardware address that the factory assigns to the module for

identification in the Data Link layer interface of the Open Systems

Interconnection system. This address serves as an electronic serial

number. Same as MAC Address.

ESN Electronic Serial Number. The hardware address that the factory assigns

to the module for identification in the Data Link layer interface of the

Open Systems Interconnection system. This address serves as an

electronic serial number. Same as MAC Address.

Ethernet Protocol Any of several IEEE standards that define the contents of frames that

are transferred from one network element to another through Ethernet

connections.