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CDD-880 Multi Receiver Router
Appendix C
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Broadcast packets are sent out all interfaces.
For Advanced VSAT BPM Mode, it is important to note that the CTOG-250 Comtech Traffic
Optimization Gateway and CDM-840s learn MAC addresses and avoid any unnecessary
transmission. In BPM Mode, the CDD-880 Multi Receiver Router functions as a receive-only
pass-through to the CTOG-250.
C.3.2 Management Network
Note that, while the Advanced VSAT BPM feature supports Bridged Traffic ports, the
Management ports for all units in the Advanced VSAT System must operate in Router Mode.
When in BPM Mode, the Traffic ports on the Advanced VSAT units do not have IP Addresses (as
you would expect from an Ethernet Switch). Therefore, the units cannot be managed (SNMP,
Web, Telnet) or pinged from this interface.
When configuring the CTOG-250 for "BPM" Working Mode, Comtech Dynamic Routing Protocol
(CDRP) continues to work as expected to populate the CTOG-250 with the routes required to
manage the remote CDM-840s via their Management IP Addresses. Handle the Return Link
Routed Management Traffic by entering a default route (0.0.0.0/0 "toWAN") in the CDM-840's
routing table.
As with "Router" Working Mode, you must enable CDRP in order for ACM/VCM on the DVB-S2
Outbound Carrier to work for Management Traffic destined to each remote.
Figure E-5. Management Network in BPM Mode
C–5
MN-CDD880
Revision 2
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