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Chapter 12

Tunneling and VPNs

RUGGEDCOM ROX II

CLI User Guide

402 Configuring a DSCP Marking for GRE Tunnel Traffic

Parameter Description

Enables or disables tunnel up and down alarms. Disabling tunnel alarms will prevent

alarms from being sent for that tunnel. GRE tunnel alarms may also be controlled for the

whole system under admin > alarm-cfg.

4. [Optional] Enable keepalive messages so as to monitor the status of the tunnel's remote endpoint. For more

information, refer to Section12.7.5, “Enabling/Disabling Keepalive Messages”.

5. [Optional] Configure the method for assigning Differentiated Services Code Point (DSCP) marks to packets

traveling through the GRE tunnel. For more information, refer to Section12.7.4, “Configuring a DSCP Marking

for GRE Tunnel Traffic”.

NOTE

An interface in the form of gre-{tunnel} (e.g. gre-t1) is added automatically to the ip menu.

6. Assign an IP address to the tunnel. For more information, refer to either Section7.1.3.2, “Adding an IPv4

Address” or Section7.1.4.2, “Adding an IPv6 Address”.

7. Type commit and press Enter to save the changes, or type revert and press Enter to abort.

Section12.7.4

Configuring a DSCP Marking for GRE Tunnel Traffic

Each packet traversing a GRE tunnel can be assigned a Differentiated Services Code Point (DSCP) mark either

defined by the device or inherited by the original IP header.

To the configure how DSCP marks are assigned for a specific GRE tunnel, do the following:

1. Make sure the CLI is in Configuration mode.

2. Navigate to tunnel» gre» {tunnel}» mark-choice, where {tunnel} is the name of the GRE tunnel.

3. Configure the DSCP marking by typing:

tunnel gre name mark-choice dscpmarking dscp-type [ mark | forward ]

Where name is name of the GRE tunnel.

Options include:

• mark – Assigns the DSCP marking set by DSCP Mark to packets traversing the tunnel

• forward – Assigns the DSCP marking defined in the original IP header of each packet traversing the tunnel

4. If mark is selected, select a DSCP mark to assign by typing:

dscp-mark [ AF11 | AF12 | AF13 | AF21 | AF22 | AF23 | AF31 | AF32 | AF33 | AF41 | AF42 | AF43 | BE

| CS1 | CS2 | CS3 | CS4 | CS5 | CS6 | CS7 | EF ]

5. Type commit and press Enter to save the changes, or type revert and press Enter to abort.

Section12.7.5

Enabling/Disabling Keepalive Messages

Keepalive messages enable endpoints of a GRE tunnel to determine one another's current operational status.

Siemens RUGGEDCOM ROX II User Manual

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