Comtech EF Data CDM-570 - Manual (Page 219)

CDM-570/570L Satellite Modem with Optional IP Module Revision 12
Ethernet IP Module Interface MN/CDM570L.IOM
13–13
RTP
RTPS
UDP
TCP
VOCE
VDEO
FTP HTTP
TELN SMTP SAP
ORCL CTRX SQL
SNMP
Non IP
IP
The IP Module will sort each QoS rule as they are added and the QoS Configuration display will
be updated to reflect the order with which rules are matched.
QoS Statistics – Every QoS Rule defined can be monitored to see the traffic flow for each
Queue. These statistics will display the traffic sent in each Queue, the amount of dropped traffic,
and the number of Active Flows.
Protocol and Port Number Considerations – When defining QoS Rules, it is important to be
aware of specifics of the traffic for which the rule is intended. When selecting a protocol for a
QoS Rule, be aware that the IP Module allows for a very broad selection (such as IP) or a very
specific protocol. For example, RTP traffic can consist of UDP portion (for voice or video) and a
TCP portion (for RTP signaling). These could have separate QoS Rules created or all be included
in a single Rule by selecting RTP as the protocol.
The following diagram shows where each protocol selection resides:
Selection of Source/Destination Ports should be done only if you are aware of the port usage of
the desired protocol or application. There are well known ports for various protocols, but often
only the ‘command’ messaging is transacted on these ports and the ‘data’ is transferred through a
negotiated port.