# ip pep dynbypass –learnnone
- switches off all learning methods
# ip pep dynbypass –learnupload
# ip pep dynbypass –learnlongurl
# ip pep dynbypass –learngwtimeout# ip pep dynbypass -learnmuxfail
# ip pep dynbypass –flush
Four QoS Classes
The Quality of Service functionality of the VSAT is described in detail in section 11. The Best Effort
PHB and Real Time Voice over IP (RT-VoIP) PHB group are available on all VSAT models (provided
the DVB-RCS Hub the VSAT is connected to supports these PHBs).
The Critical Data PHB and Real Time Video Conferencing PHB group are available as standard only on
the SatLink 1910 and require the QoS4 SW license key to be configured on the SatLink 2000, 1000,
1900, 1901, and 2900 models. The table below shows which QoS Groups on which VSAT models
require the QoS4 SW license key to be configured.
Table 16: QoS Groups and Licenses for SatLink VSATs
18.4 Return Link Access Control (RAC)
The multi-field classifier of the VSAT can also be used to block undesired traffic from being forwarded
onto the Return Link. By mapping the Return Link traffic to the QoS group having index -1, the VSAT
can drop traffic destined to the Return Link based on the following parameters in the IP header:
IP source address
IP destination address
DSCP / TOS
Protocol type
TCP/UDP source port number
TCP/UDP destination port number
Use the CLI command ip mfc mask <module id> [<subindex>] <index> <group> {{+|-
}<tag> <tag-parms to add RAC entries into the QoS Classification table. See section 11.1 for
information on how this command is used for classifying Return Link traffic into different QoS classes.
The command has a variable length where one or more tags with different tag parameters can be set. The
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