RuggedCom RuggedRouter RX1100 - Manual (Page 141)

15. Traffic Control
Revision 1.14.3 141 RX1000/RX1100™
The tos-minimize-cost option field specifies that a packet with the minimize cost ToS (ToS bit 6 set)
belongs to this class.
The tcp-ack option field specifies that a tcp ack packet with size <= 64 belongs to this class. This is
useful for speeding up bulk downloads. Please note that the size of the ack packet is limited to 64
bytes because this option is intended to only match packets with no payload. This option is only valid
for one class per interface.
The tos= option field allows you to define a classifier for the given value/mask combination of an IP
packet's TOS byte. Value and mask are both specified in hexadecimal notation using the "0x" prefix.
It is also possible to specify a diffserv marking, or DSCP (Diffserv Code Point). These are typically
quoted as 6-bit values, and must be left-shifted (multiplied by 4) for use in the "tos=" field. For example,
a DSCP of 0x2E (EF, or Expedited Forwarding) would be entered as 0xB8/0xFC (4 X 0x2E = 0xB8,
and the two lowest order bits are masked by masking with 0xFC).
Note
ToS field matches take precedence over the assigned mark.
The Save button saves the class changes to the TC configuration.
The Delete button delete the class from the TC configuration.
15.2.3. TC Rules
This menu allows you to add, edit or remove a traffic classification rule. Add a new rule by selecting
the Add a new traffic classification rule link or by clicking on the add-above or add-below images
in the Add column. Reorder rules by clicking on the arrows in the Move column.
Figure 15.5. TC Rules