Comtech EF Data ODM-840 - Manual (Page 128)

ODM/R-840 Outdoor Remote Router Revision 0
Ethernet-based Remote Product Management MN-ODM840
5–40
o Off – This mode disables QoS. Instead of an operable page, the ‘Configuration | WAN |
QoS’ page appears as shown at top in Figure 6‐20.
o DiffServ –This mode allows the CDM‐840 to operate in Differentiated Services (DiffServ)
Mode to make it fully compliant to the Differentiated Services QoS RFC (Request For
Comments) standards. The ‘Configuration | WAN | QoS’ page appears as shown at
bottom in Figure 6‐20.
o Max/Pri(ority) – This mode provides multi‐level traffic prioritization with the ability to
limit maximum traffic per priority class. The ‘Configuration | WAN | QoS’ page appears
as shown at top in Figure 6‐21.
o Min/Max – This mode provides a Committed Information Rate (CIR) to each user‐
defined class of traffic with the ability to allow a higher burstable rate depending on
availability. The ‘Configuration | WAN | QoS’ page appears as shown at bottom in
Figure 6‐21.
• Segmentation and Reassembly (SAR) – SAR is an adaptive process recommended for Tx
Data Rates < 700 kbps. At lower data rates, it improves the jitter and latency performance
for high priority packets. Use the drop‐down menu to Disable or Enable SAR.
Set the desired configurations in this section. Click [Submit] to save.
Differentiated Services (Diffserv)
The Differentiated Services section appears only when QoS Control Mode = DiffServ.
• Index – The automatically‐assigned specific rule internal index number is identified here.
• Priority – IP traffic is prioritized based upon the DSCP (DiffServ Code Points) Class Selector
Precedence.
• Per‐Hop Behavior (PHB) – This is the Traffic class that determines how packets will be
forwarded.