Tut Systems XL-12000S - Manual (Page 63)

XL-12000S
MANAGED, HIGH-SPEED NETWORK MODEM USER GUIDE
10.0 TROUBLESHOOTING TUT SYSTEMS 55
8. SNMP cannot locate the modem.
If your NMS is unable to find the XL-12000S modem during
auto-discovery, try the following steps:
a. Try to ping the modem interface to determine if there is a
network connection to the modem. If ping is still not work-
ing, double-check your network configuration (also see #9
below).
b. Verify that the NMS “get” community name matches one
of the modem’s configured community names. If the NMS
and modem community names do not match, change either
one to match with the other.
c. Verify that the NMS IP address matches the modem’s con-
figured source IP address for “get” community name used
by the NMS. If the modem source IP address for the “get”
community name is different than the NMS, you may want
to either a) change the modem source IP address for that
community to be the NMS IP address, or b) if there are
multiple NMS’s which want to communicate with the
modem using the same community name, then configure
the modem with multiple entries with the same community
name but with separate source IP addresses.
d. Manually enter a node for the modem in your NMS node
map. (Some NMS products’ auto-discovery mechanisms
do not always find all nodes). After manually entering the
node, try to request a “system” object from the modem.
9. Changes were made to the modems IP Address(es) and the
modem is now unavailable via Telnet or ping.
If the IP address(es) have recently changed on the modem, the
IP ARP cache may be inaccurate. Flush the IP ARP caches on
routers and PCs trying to reach the modem.