Network monitoring Application/ appliance

Please suggest  a product that can best do the following in a Network:
1.      Monitor user bandwidth consumption
2.      Monitor bandwidth consumption in WAN links and VPN tunnels.
3.      Monitor Network status of Devices (Cisco and Non Cisco) including servers.
4.      Reporting, generate Alerts etc. of activates.
5.      Graphical representation of existing network.
6.      Network inventory (optional).
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The big ones are:
Solarwinds Orion
Just for Fun NMS (free)

It all depends on  your budget and the size of your network. There are plenty to choose from.
nettech1998Author Commented:
i have a fair knowledge on the above applications. i am looking for something like Cisco LMS. unfortunately Cisco LMS doesn't support multi-vendor devices. Is there any such solution? budget would not be a big problem.
You should see
It's freeware, beatiful, powerful and easy to deploy/use.

The comunity is helpfull and have localized version (I'm from Brasil and we have a great comunity and a certified partner here!)
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nettech1998Author Commented:
Its sounds good ! but i have few clarifications.
Does Zabbix could check bandwidth consumed by each device , WAN, VPN etc.? Does it support Cisco, juniper, bluecoat devices.?
oh gud.........
u can get the so meny soft on ther go for that.
its better for that...........!
nettech1998Author Commented:
Ohh.. sorry.. i don't want any torrents.. i have to implement it in a critical environment. so i need a good brand or an open source with support.
So you're looking for Zabbix, believe me. Good support, nice interface... no so hard to start as NAGIOS.
nettech1998Author Commented:
Jadeer31 before that i need to know
Does Zabbix could check bandwidth consumed by each device , WAN, VPN etc.? Does it support Cisco, juniper, bluecoat devices.?
Zabbix is a complete tool to monitoring devices, from appliances to server, even desktop/notebooks.

I have several ready templates to monitor each device using SNMP, IPMI or own agent.
It's really easy to install, but I'm sure you will find a vmware .vmdk to try it.
watch this: 

Zabbix can monitor distributed devices, behind a firewall by using a proxy.

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madunix (Fadi SODAH)Chief Information Security Officer Commented:
Nagios is been used for Alarms and Cacti for Trending/Graphs. GroundWork Monitor Enterprise Hyperic HQ Icinga  mrtg Nagios N-central op5 Monitor openITCockpit OpenNMS HP OpenView BMC PATROL ProactiveNet Performance Management Shinken IBM Tivoli CA Unicenter WhatsUp Gold Zenoss Enterprise Zabbix Open Source ZABBIX SIA Cacti Open Source
I believe you need two products:

1. WFilter -- monitoring/filtering of bandwidth and internet connections.
2. Spiceworks -- monitoring of network devices.
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Network Management

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