With Optional Ip Packet Processor) - Router Mode - Comtech EF Data CRS-170A Installation And Operation Manual

CRS-170A L-Band 1:1 Redundancy Switch
Introduction
Note the following:
1. The Managed Switch Mode method of redundancy is intended to be equivalent to pulling
the Ethernet cable from one port and putting it into a different port on the same switch.
2. For the CDM‐625 modem: The user may configure one of the CDM‐625's four available
10/100 Ethernet ports for M&C Ethernet. As configured in Dedicated Management Port
Mode, when the modem is offline the M&C‐designated port remains functional and
available for operation, while the three remaining ports are unavailable. Otherwise, if none
of the 10/100 Ethernet ports are reserved for M&C operation, all four ports become
unavailable when the modem is offline.
Refer to the CDM‐625 Advanced Satellite Modem Installation and Operation Manual for
instructions to configure one of the four 10/100 Ethernet ports for each modem for remote
Ethernet M&C.
3. For the CDM‐750/700/710/710G modems: When the modem is offline, although all
GigE port(s) are unavailable, the M&C Ethernet port remains functional and available for
operation.
4. Installation must use a true switching device, not a hub device.
1.2.1.1.3 CDM-625 (with Optional IP Packet Processor) – Router Mode
All configuration changes can only be made to the Online Modem and will require
the User to "Save Parameters to permanent storage" to ensure the configuration
change is also applied to the Backup Modem.
For the CDM‐625 with the optional IP Packet Processor installed and enabled and the
configuration set for Router Mode, the user needs to provide an external Ethernet switch.
In Router Mode, both modems must be assigned a unique Management IP address on the same
subnet (172.18.10.21/24 and 172.18.10.22/24 as shown in Figure 1‐8 and Figure 1‐9). This is
used to share the param file. A Traffic IP address on the subnet must also be assigned
(172.18.10.20/24) in the online modem.
The Traffic IP Address must be different from either Management IP Address.
This configuration must be enabled on both modems.
Dedicated Management Port Mode is not configurable for use when the
optional IP Packet Processor is installed and enabled. With the IP Packet
Processor enabled, as a means to avoid Ethernet Networking Loops, only one
of the CDM‐625's four 10/100 Ethernet Ports is used for each modem at any
given time.
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Revision 9
MN/CRS170A.IOM