Comtech EF Data CDM-IP Quick-Start Guide - Manual (Page 21)

CDM-IP Quick Start Guide Rev. 0
Getting Started CD/CDMIPQSG.IOM
19
CDM-IP Ethernet port. ICMP
response is ‘Request timed out’.
b) Verify Ethernet connection – cables, hub, etc. PC,
hub, and CDM-IP should have Ethernet activity
LED lit.
Note: A PC must be connected to the CDM-IP
using a hub, switch or a RJ45 crossover
cable. When the CDM-IP Ethernet port
senses an Ethernet connection, the CLI
will display;
phymon_callback(): enet link
change! link=1
If the connection is broken, the CLI will
display;
phymon_callback(): enet link
change! link=0
2 No Ping response from the
locally connected PC to the
remote CDM-IP or remote PC.
ICMP response is ‘Request
timed out’. a) Verify both CDM-IP’s are in EasyConnect
/Point-
to-Point Modes.
b) Verify IF link between modems for proper settings
and carrier quality (RX signal level, Eb/No, etc). It
is possible that there is a spectrum inversion,
particularly if you are using the CDM-IP with RF
converter equipment. If this is the case, the signal
level & Eb/No may be OK, but no data will be
received. To correct this invert the TX and RX
Spectrum on one of the CDM-IP’s.
c) Send a constant ping from the PC 1 ‘ping
172.16.10.2 –t’ to PC 2. In the CDM-IP 1, go to
Operations and Maintenance/Diagnostics. Enable
‘Dump Packets transmitted to Satellite Interface’.
Verify that the Pings are being transmitted by
observing 1 packet on CLI every second. If not
displayed, reverify PC 1 and CDM-IP 1 settings.
Disable ‘Dump Packets transmitted to Satellite
Interface’ by entering ‘T’.
d) Continue sending constant ping from the PC 1 to
PC 2. In the CDM-IP 2, go to Operations
Maintenance/Diagnostics. Enable ‘Dump Packets
received from Satellite Interface’. Verify that the
Pings are being received by observing 1 packet on
CLI every second. If not displayed, reverify PC 2
and CDM-IP 2 settings. Disable ‘Dump Packets
received from Satellite Interface’ by entering ‘R’.
Note: All pings transmitted will require a reply to
be transmitted from the target host. Use
the Diagnostics ‘Dump Packets” tools to
isolate where packets are lost in the CDM-
IP duplex paths. Also, always disable
“Dump Packets” before sending live traffic.