Mn/Cdm570L.iom - Comtech EF Data CDM-570L Installation And Operation Manual

CDM-570L Satellite Modem with IP Module
Filtering - QoS also allows specific flows to be designated as "filtered," so the IP Module will
discard traffic that the user does not want to forward over a satellite link.
QoS Rule Hierarchy - It is quite possible to have traffic that meets the definitions of several QoS
Rules. All traffic will be classified into the first QoS Rule that is a match, or fall into the Default
Rule. The most specific QoS Rule will always be first. For example, a QoS Rule that identified a
Source and Destination IP Address would be assigned ahead of a rule that just defined RTP
protocol. QoS Rules that have the same amount of variables defined are sorted as follows:
1. Having a Protocol defined.
2. Source IP Address or subnet defined.
3. Destination IP Address or subnet defined.
4. Source Port defined (lowest Port number first).
5. Destination Port defined (lowest Port number first).
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
Protocol Priority:
a. VOCE –
b. VDEO –
c. RTPS –
d. RTP –
e. FTP –
f. HTTP –
g. TELN –
h. SMTP –
i. SNMP –
j. SQL –
k. ORCL –
l. CTRX –
m. SAP –
n. UDP –
o. TCP –
p. IP –
q. N-IP –
Voice Real Time Protocol
Video Real Time Protocol
Real Time Protocol Signalling
All Real Time Protocol
File Transfer Protocol
Hypertext Transfer Protocol
Telnet Protocol
Simple Mail Transfer Protocol
Simple Network Management Protocol
Structured Query Language Protocol
ORACLE Protocol
CITRIX Protocol
Service Announcement Protocol
User Datagram Protocol
Transmission Control Protocol
All Internet Protocol
All Non-Internet Protocol
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