Copyright © 2006 – STM Norway AS
Publication no. 101557, Rev. T, November 3
th
, 2006
Page 43
The QoS Groups available for internal use in the STM SatLink Terminal are:
QoS Group ID QoS Group Name
0
Best Effort
1
VoIP Audio
2
VoIP Signalling
3
ViC Video
4
ViC Audio
5
ViC Signalling
6
Critical Data (CD)
In addition, the QoS classification table can be configured to block traffic from being sent to the return
link (see section 15.5).
Factory default configuration is that the QoS classification table is empty, and all traffic is handled as
Best Effort (QoS Group 0). A user with privilege rights 2 (user
install
or equivalent) can configure a QoS
Classification table in the terminal as explained below, but the use of other QoS groups than 0 can be
inhibited by the network operator/service provider. Please contact the network operator/service provider
for use of QoS group 1-6 for VoIP and Video real-time traffic and prioritised effort traffic (CD). Please
note that QoS Groups 3-6 for Video and Critical Data will only be available on the STM SatLink 1000,
1900, and 1901 if the software license for 4 QoS classes is configured (see section 15.4).
The CLI command to be used to configure the QoS Classification table is
ip qos mask <index>
< group> <list of tags>
. This command has a variable length where one or more tags with
different tag parameters can be set. The tags are the different IP header parameters that can be used for
QoS classification:
tag and tags parameters for CLI command
Function
+src <ipaddr> <mask>
Define or modify IP source address and netmask
-src
Delete IP source address and netmask
+dst <ipaddr> <mask>
Define or modify IP destination address and
netmask
-dst
Delete IP destination address and netmask
+dscp <min> <max>
Define or modify DSCP range
-dscp
Delete DSCP range
+prot <n> <p1> … <pn>
Define protocol value [0,255]. Up to 3 protocol
values can be defined (n can be 1, 2, or 3).
-prot
Delete protocol values
+sport <min> <max>
Define TCP/UDP source port number range
-sport
Delete TCP/UDP source port number range
+dport <min> <max>
Define TCP/UDP destination port number range
-dport
Delete TCP/UDP destination port number range
+dscpmark <dscp>
Define DSCP value to set in IP header
-dscpmark
Delete DSCP value to set in IP header, i.e. do not
change the DSCP value
To view the current QoS configuration, use the CLI command
ip qos show
.
Examples:
To add an entry in the QoS classification table matching IP packets with DSCP range 10-15 and assign
these to the VoIP Audio QoS Group:
