Ip Mode; Bridge M&C - Teledyne QMultiFlex-400 Installation And Operating Handbook

QMultiFlex-400™ Installation and Operating Handbook

6.2.22.1 IP Mode

Table 6-34 shows the IP mode options. The operation of the M&C and IP Traffic Ethernet
ports is summarized in Table 6-34.
Trunking The QMultiFlex-400™ comes with an IP processing card, which offloads
mode the processing of the transmitting traffic and potentially large amount of
returning packets from multiple remotes. All of the Xstream IP features
will also be handled by the processing card, which includes Traffic
Shaping QoS, IP over DVB encapsulation, TCP acceleration and
ACM/VCM. The network traffic needs to be connected to Port 1 of the
processing card. Port 4 will then need to be connected to the base
modem IP traffic port. Trunking mode should be selected as the IP mode
if an ethernet bridge is required (common in star topologies).
Trunking mode puts the base modem into a low jitter high throughput
mode, where the processing card will handle the heavy lifting on the
bridging features. As a whole, the modem acts like an ethernet bridge,
preserving the original ethernet frames (including additional fields such
as VLAN and MPLS headers) over satellite.
Routing In this mode IP packets are forwarded based on the contents of the
modem's routing table, which can be configured manually with static
mode
routes. The modem operates as a two-port router in this mode, with
separate terrestrial and satellite subnets. The idea being there is a
common satellite subnet with the various different remote subnets being
routed through it. Routing mode should be selected as the IP mode if a
mesh topology is required. See separate document: AN_057 P2MP
Mesh Network Routing Mode Configuration Notes available from
technical support.
Bridge mode Puts the base modem into an ethernet bridge mode. Since the IP
(No longer processing card now performs the bridge functions, this is no longer a
relevant) valid option. If for whatever reason the processing card was taken out,
then this could be selected.
6.2.22.2 Bridge M&C
This is an On/Off control that determines if the M&C port is bridged to the other traffic port
on the base modem. The only reason you would ever want the M&C bridge on is if the IP
traffic card needs to be upgraded (contact customer support for details).
The default for this setting is 'On' (for historical reasons). This will need to be
turned 'Off' for normal operation.
Never operate the QMultiFlex-400™ in a network with the M&C bridge tuned
On (default setting). Figure 6-43 shows the check box unchecked.
Table 6-34 IP Mode
Figure 6-43 Edit->Bridge M&C Unchecked
6-51