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QMultiFlex-400™ Installation and Operating Handbook
6.2.5.1 Primary QoS Method
Off
This switches traffic shaping off. When off, incoming packets are buffered
and transmitted on a first-come-first-served basis. Arriving packets will
be dropped when the buffers are full.
VLAN ID
Traffic shaping is based on VLAN ID.
IP address
Traffic shaping is based on IP address (any mixture of destination and
source addresses and port numbers).
DIffserv
In single stream mode only, the primary QoS method can be set to
Diffserv. Traffic shaping is based on the standard Diffserv classes.
IEEE 802.1p
In single stream mode only, the primary QoS method can be set to IEEE
802.1p. Traffic shaping is based on the standard IEEE 802.1p priority
tags (which form part of the IEEE 802.1Q header).
6.2.5.2 VLAN Mode
Off
This switches explicit VLAN processing off. In bridge mode, any VLAN
headers on incoming packets (terrestrially and over satellite) will be
retained and handled transparently by the modem.
VLAN access
Not currently valid
mode
VLAN
In this mode, the VLAN tags are added externally to the modem (e.g.
trunking
by a suitable Ethernet switch) and are passed transparently in all
mode
cases.
VLAN filtering should be enabled on the remote modems (unless the
filtering is being done by an external switch). All packets arriving over
satellite that do not match the modem's VLAN ID will be dropped. All
packets that have the correct VLAN ID will be forwarded onto the local
network after the VLAN tag has been removed. Packets transmitted over
satellite by the remote modem will be tagged with the relevant VLAN ID.
VLAN Filtering
In star networks, VLAN filtering can be applied at the remote modems
in order to drop unwanted packets. The remote modem does this by
matching the received packets against a single VLAN of interest.
Table 6-16 Primary QoS Method
Table 6-17 VLAN Mode
6-19
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