Comtech EF Data CDM-760 User Manual

Page 127

Front Panel Operation

Revision 2

CDM-760 Advanced High-Speed Trunking Modem

MN-CDM760

6–41

Then:

•

For Interface, use the  arrow keys to select RS-232, RS-485-2W, or RS-485-4W.

•

For Address, note the following:

For RS-232 (aka EIA-232) – The Address is fixed at 0000 and is not editable.

For RS-485-2W or RS-485-4W (aka EIA-485 2-Wire or 4-Wire) – Use the   arrow keys

to select a digit, and then use the  arrow keys to change that digit. Address 0000 is

reserved for universal addressing. The permitted address range is 0001 to 9999.

•

For Baudrate, use the  arrow keys to select 2400, 4800, 9600, 19200, 38400, or 57600

baud.

Character format is not selectable. It is fixed at 8-N-1.

Press ENTER.

(CONFIG: Remote) Remote Control  Ethernet

Select Ethernet to enable remote SNMP, Telnet, or Web Server Interface M&C of the modem.

6.2.2.7.2 (CONFIG: Remote) InBand

InBand Modem Control allows remote Ethernet access via the Gigabit Ethernet data interfaces.

Use the  arrow keys to Enable or Disable this feature. Press ENTER.

This feature is functional only with the base unit Gigabit Ethernet data

interfaces. See Chapter 7. ETHERNET-BASED REMOTE PRODUCT MANAGEMENT

for operations associated with the optional High-Speed Packet Processor Gigabit

Ethernet data interfaces.

When you enable InBand, the modem establishes an internal Layer 2 connection

between all active Ethernet data ports (GBEI1/J5 | GBEI2/J6 | Optical GBEI/J7)

and the management port (J4 | MGMT). For this reason, when you enable

InBand control, you should never make a physical connection from any Ethernet

data port to the physical management port – this will cause a networking loop

and create a broadcast storm.

Similarly, when you enable InBand, you may not physically connect the IP traffic

data ports and management port to a single external switch, as this will cause

the same networking loop/broadcast storm condition. When you need InBand

control in tandem with external control, you must separate the physical

connection for the IP traffic data ports and the management port with a router

or two independent networks.