I think I know what's going on with your Health Monitoring Dashboard
issue. Let me start by providing some background on how this system
works.
The Health Monitoring Dashboard is a GUI representation of SNMP traps
received by the VSOM server. As such, it only changes device states if
it receives a SNMP trap for a degraded, failed or offline condition.
VSOM does not poll the devices, it only listens. The end devices
(cameras) do not send these SNMP traps, instead relying on the VSMS
server to communicate a change in status of the proxy for a camera.
It is likely the VSMS server could not resolve the hostname of the
VSOM server, so the VSOM server and Health Monitoring Dashboard did
not receive the trap.
The receipt of SNMP traps is further complicated by the fact that
registration of VSOM to the media servers is not by IP address, rather
hostname, and if the media server cannot resolve the host name, traps
are not received by the VSOM console. This has the potential to leave
us in a position where the end user may not be aware of offline devices
as the default state is UP rather than UNKNOWN.
There is a defect written to address this scenario through a redesign
such that VSMS can use the IP address rather than hostname to send SNMP
traps ( CSCtj68042). From each media server, ensure that the VSOM
hostname is resolvable to an IP address. This can be done by updating
the DNS server (if your network is using one) or by editing the
"/etc/hosts" file on each of the media servers to including a hostname
to IP address mapping for the VSOM server. Alternatively, the media
server's /usr/BWhttpd/conf/snmpd.conf can be manually updated to replace
the VSOM hostname with the IP address.
Here is an example of the hosts file on the media server:
ese-mediasvr-cc1:/usr/BWhttpd/etc # cat /etc/hosts
#
[snip]
#
172.26.157.7 ese-mediasvr-cc1.cisco.com
192.0.2.137 ese-mediasvr-cc1.cisco.com ese-mediasvr-cc1
Using Yast, manually enter the host for the VSOM server into /etc/hosts
on the media server
ese-mediasvr-cc1:/usr/BWhttpd/etc # cat /etc/hosts | grep 192.0.2.138
192.0.2.138 ese-vsom-vm-cc1.cisco.com
After adding the entry into /etc/hosts and restarting the server through
the management console, the alarms should once again be received by VSOM
and Health Monitor should report cameras which are offline.
So in summary, verify by pinging the hostname of the VSOM server from
each VSMS server in the network. For any which are unresolved by
hostname, either change DNS entry to map hostname to IP, or using Yast
or vi, edit /etc/hosts to map IP to hostname for VSOM on each media
server, (or the media server's /usr/BWhttpd/conf/snmpd.conf can be
manually updated to replace the VSOM hostname with the IP address.)
I hope that helps,
Jim
