Enabling And Configuring Traffic Control - Siemens RUGGEDCOM ROX II User Manual

RUGGEDCOM ROX II
CLI User Guide
Section 5.39.1

Enabling and Configuring Traffic Control

Traffic control functions are divided into two modes:
• Basic Mode
Basic mode offers a limited set of options and parameters. Use this mode to set the outgoing bandwidth for
an interface, the interface priority (high, medium or low), and some simple traffic control characteristics. Basic
traffic shaping affects traffic identified by protocol, port number, address and interface. Note that some of these
options are mutually exclusive. Refer to the information given for each option.
In basic mode, a packet is categorized based on the contents of its Type of Service (ToS) field if it does not
match any of the defined classes.
• Advanced Mode
In advanced mode, each interface to be managed is assigned a total bandwidth for incoming and outgoing
traffic. Classes are then defined for each interface, each with its own minimum assured bandwidth and a
maximum permitted bandwidth. The combined minimum of the classes on an interface must be no more
than the total outbound bandwidth specified for the interface. Each class is also assigned a priority, and any
bandwidth left over after each class has received its minimum allocation (if needed) will be allocated to the
lowest priority class up until it reaches its maximum bandwidth, after which the next priority is allocated more
bandwidth. When the specified total bandwidth for the interface is reached, no further packets are sent, and
any further packets may be dropped if the interface queues are full.
Packets are assigned to classes on the outbound interface based on either a mark assigned to the packet, or
the Type of Service (ToS) field in the IP header. If the ToS field matches a defined class, the packet is allocated
to that class. Otherwise, it is allocated to any class that matches the mark assigned to the packet. If no class
matches the mark, the packet is assigned to the default class.
Marks are assigned to packets by traffic control rules that are based on a number of parameters, such as IP
address, port number, protocol, packet length, and more.
The two modes cannot be accessed simultaneously. Only the mode that is currently configured can be accessed.
To enable and configure traffic control, do the following:
1. Make sure the CLI is in Configuration mode.
2. Configure the following parameter(s) as required:
Parameter
enabled
mode-choice { mode-choice }
3. If basic mode is enabled, do the following:
a. Add traffic control interfaces. For more information, refer to
Interface".
Enabling and Configuring Traffic Control
Description
Synopsis: typeless
Enables/disables traffic control (TC) for the current firewall configuration. The current
firewall configuration is the one that is committed. When an active configuration is
committed to the system, then an <emphasis role="bold">enabled</emphasis> TC
configuration will be included. When a work configuration is committed, the <emphasis
role="bold">enabled</emphasis> TC configuration will be included in the work
configuration. <emphasis role="bold">A TC configuration needs a firewall configuration
to operate</emphasis>.
Synopsis: { basic, advanced }
Default: basic
Choose to use either 'simple' or 'advanced' configuration modes. Click again on traffic-
control after making a choice.
Section 5.39.2.2, "Adding a Traffic Control
Chapter 5
Setup and Configuration
567