Tc rules, Traffic control configuration, Tc interfaces (tcdevices) – RuggedCom RuggedRouter RX1100 User Manual

Page 138: Tc interfaces

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15. Traffic Control

Revision 1.14.3

138

RX1000/RX1100™

15.1.1.3. TC Rules

Mark

Source

Destination Protocol

Source Port Dest Port

Test

Length

TOS

2

Any

Any

ICMP

Any

Any

Any

Any

Any

RESTORE

Any

Any

Any

Any

Any

0

Any

Any

CONTINUE

Any

Any

Any

Any

Any

!0

Any

Any

1

Any

Any

UDP

20000

Any

Any

Any

Any

3

Any

Any

TCP

Any

80

Any

Any

Any

4

Any

Any

Any

Any

Any

0

Any

Any

SAVE

Any

Any

Any

Any

Any

!0

Any

Any

The rules first check non connection-based protocol rules (ICMP in this case) in order to assign a
mark. For any packet that is still not marked, we attempt to restore a saved mark for the connection.
If at this point the packet has a mark set, we stop checking rules (CONTINUE) since it is either ICMP
or a packet from an existing connection which we have already assigned a mark. If still no mark is
assigned, it must be a new connection so we process the packet through all the remaining rules to
determine the mark it should receive. At the end we save the new mark to the connection so that
any further packets for the connection do not have to go through all the rules again, in order to save
processing resources. We mark all packets with no other matching rule to 4 since that represents
the default class (as defined in TC Classes). This allows explicit traffic control of even unspecified
network connections.

15.2. Traffic Control Configuration

Note

Traffic Control is mutually exclusive of Traffic Prioritization. Do not enable both of these features
at once.

15.2.1. TC Interfaces (tcdevices)

Figure 15.1. TC Interfaces

This Menu allows you to add, edit or remove traffic classification interfaces, and to assign the
maximum inbound and outbound bandwidths that the interface can handle. Add a new traffic
classification interface by selecting the Add a new traffic classification interface link or by clicking
on the add-above or add-below images in the Add column.

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