Category: Solaris Networking

10

Solaris Network Performance Tuning : know about TCP window size

Our Unixadmin, John from xyz company,  recently upgraded one of his server’s network interface card  from the old one with 100MB speed to a new one with 10Gig speed , and the reason is to improve the speed for the backup of the server. After the NIC Upgrade  john found that the server network...

5

Solaris Troubleshooting : Calculate TCP retransmission rate using netstat

This post explains you the information on the TCP retransmission measurement using netstat -s for Solaris. A system with a high retransmission rate indicates network congestion and can cause network oriented applications (like web servers) to operate slowly. Procedure to Calculate TCP retransmission rate: TCP expects acknowledgments from...

4

Solaris IPMP – Diagnosis and Troubleshooting

Symptoms: *  mpathd error messages in /var/adm/messages: No test address configured on interface <interface_name> disabling probe-based failure detection on it Test address address is not unique; disabling probe based failure detection on <interface_name> The link has gone down on <interface_name> Successfully failed over from  NIC  <interface_name1>...

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