network bandwidth~

[???_185]

I want to know average bottleneck or bandwidth value(kilobytes) when network traffic is too severe.
whenever network traffic is bad, I look over glance tool. and then I can just check lan traffic. Can I check by another way?
I can't use perfview cause of license.

[saju_2]

Hi

With netstat you can see how many packets are being sent received etc...

netstat -s
or
netstat -p tcp

Regards
CS

[morganelan]

Important early step in troubleshooting any Network performance issues:
#How many network hops (i.e. bridges, hubs, routers, switches, etc.) do network packets traverse between the client and the server systems?
#What is the speed of each link separating these systems?
#Does your network equipment use auto-negotiation to set speed and duplex settings?
#Are your network interfaces configured for half-duplex or full-duplex mode?
#Do your switch port settings match the speed and duplex settings of your host interfaces?
#What is the maximum transmission unit (MTU) size of the links between these systems?
#If the links are using different MTU sizes, how are the packets being translated? For example, if the NFS client resides in an FDDI ring and uses an MTU size of 4352 and the NFS server uses a 100BT interface with an MTU size of 1500, how are the 4352 byte packets from the client being fragmented into 1500 byte packets for the server?
#Do packets sent from the client to the server take the same route through the network as the packets sent from the server to the client?

You can man netstat to find what you want to know about your network statistics.The traceroute(1M) tool provides a simple means of determining the path through the network taken by packets sent from one system to another.Another tool shipping with HP-UX that can simplify the process of collecting network topology information is ping(1M).The lanadmin command allows a system administrator to display many useful statistics kept by the LAN driver subsystem, regardless of the interface type.

You can try using tools such as:
ttcp:http://ftp.arl.mil/ftp/pub/ttcp
netperf:http://netperf.org

[Mahesh Kumar Malik]

Hi

You may consider HP Open view Network Node Manager, which is wonderful tool for monitoring Network Traffic and creating different statistics

A 60 days free trial version is available for download from hp web site

Regards
Mahesh