Xtreme Power Conversion Corporation
Web/SNMP Cards
Page 48
UPS Management
Troubleshooting Network Shutdown
When experiencing difficulties with the Network Shutdown functionality (RCCMD), there are a few diagnostic
tools that can be used.
The first step is to ensure that the SNMP/Web adapter can reach the RCCMD Client. The actual network connectiv-
ity between the two nodes can be checked with the usual ping command. However, the actual RCCMD communi-
cation and related configuration can also be tested. The SNMP/Web adapter includes a Test function that sends a
test message to the Client. It is important to monitor both the messages returned from the SNMP/Web adapter
and the actual result on the Client. Depending on the configuration, the SNMP/Web adapter may successfully
send the test message, but this can be ignored by the RCCMD Client.
The network configuration of the devices can be critical. It is highly recommended to assign static IP addresses to
the involved devices (SNMP/Web adapter and RCCMD Clients). In a DHCP environment, the DHCP Server should
be configured to always assign the same address to these devices. It is also recommended to identify the nodes
with their IP address rather than their hostname – otherwise, the Network Shutdown may fail when the DNS
server is unavailable or unreachable.
As the RCCMD Shutdown command is a TCP/IP network message, it is vital that network connectivity devices (such
as routers, switches and hubs) are protected by the UPS.
Finally, both the SNMP/Web adapter and the RCCMD Clients log their RCCMD activity. The analysis of the logfiles
may provide useful hints on the actual RCCMD communication and the eventual root cause of the problem.
