How to monitor network load

hi,
How to monitor network load i.e. bytes sent/recieved.

what is your operating system?
refer the links, hope this may helps you.
http://hoopercharles.wordpress.com/2010/08/19/network-monitoring-experimentations-7/
http://www.remote-dba.net/t_tuning_monitoring_network.htm
http://www.activexperts.com/activmonitor/check/database/oracle/

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Hi MS DEF,
A second network adapter is required to provide peer-to-peer communication between cluster hosts. Please isolate your heartbeat network. With unicast when cluster is connected
to a switch, incoming packets are sent to all the ports on the switch, which can cause switch flooding, please confirm you have setup your switch correct, you can refer the following Cisco Switch related unicast configuration.
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How to configure Microsoft Network Load Balancing on two switches
https://supportforums.cisco.com/discussion/11918276/how-configure-microsoft-network-load-balancing-two-switches
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http://technet.microsoft.com/en-us/library/cc782694(v=ws.10).aspx
An Optimal Network Load Balancing (NLB) Configuration
http://blogs.technet.com/b/clint_huffman/archive/2007/10/08/an-optimal-network-load-balancing-nlb-configuration.aspx
Selecting the Unicast or Multicast Method of Distributing Incoming Requests
http://technet.microsoft.com/en-us/library/cc782694(v=ws.10).aspx
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How to monitor network load

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