Monitor Network activities?

[Young C. Jun]

I'm using GLANCE to monitor system activities. Today I saw that the network activity is higher than usual activity.

Here is my question.
How can I determine what's going on this activity?
What's the proper value for Pkt In and out?
Can I check what has been sent and gotten ?

Thanks

[Albert E. Whale, CISSP]

To monitor Network activity via a Glance type interface, I would recommend gpm.

The monitor individual packets, you'll need a packet analyzer, or sniffer. There are many available.

My question to you is what are you attempting to do? To see what is going on, and how it got there is dependant on the design of the Network, and the configuration of the Server (many factors at play here!).

One of the nicest features of gpm is it's display of Collisions. A high percentage of Collisions indicates that you should review the layout of the network.

The remaining questions are really going to be dependant on what you are using your server for.

Hope this helps.

[Young C. Jun]

We use HP as Database Servers.
Yeah, I'm using gpm to monitor.

My concern is that usually the value of pkt in and out shows near 3000 per sec. But, sometimes they shows 15000 per sec.

So, I want to know which process is sending and getting.
And, Which data is getting and sending?

Thanks again

[rajsri]

Hi
If you want know what is causing max pck in and out there are two ways.

1.use measure ware agent and using perfview you can select the network parms and select the time when the network pkt rate is high and then look in to process which are running during that time .

2.is find out the time at which net-packetrate is high ir packet in and packet out and use /usr/sbin/acct/acctcom which will list all the process running on the system sicnce last boottime , so you can grep for the time you are interested in and look for what process are causing.

[Young C. Jun]

Thank you, rajsri

But I don't know how to use acctcom.

Can you provide me how can I use this command with some examples?

I'm not an unix admin but an oracle dba.
So, I need help. :)

Thanks guys