Viewing IP Traffic Statistics with ipstat command Starting with Oracle Solaris 11.2 release, you can use the ipstat command to report statistics about IP traffic. ipstat provides options to gather and report statistics only on IP traffic matching specified source or destination address, interface, and higher layer protocol. For more information, refer to the ipstat man page. To gather and report statistics on IP traffic based on the selected output mode and sort order, use the "ipstat -l" … [Read more...] about Solaris 11 : How to monitor network traffic using “ipstat”, “tcpstat” and “netstat” commands

The 2 important commands to manage network resources in Solaris 11 are "dlstat" and "flowstat". The post is a short note on the usage of these commands to display and manage network resources. dlstat Command The dlstat command reports runtime statistics about datalinks. The output is sorted in descending order of link utilization. dlstat enables you to: Examine all links and reports statistics Examine a specific link and reports statistics Examine physical network devices and reports … [Read more...] about Managing network resources in Solaris 11 using “dlstat” and “flowstat”

Integrated Load Balancer (ILB) provides Layer 3 and Layer 4 load-balancing capabilities for Oracle Solaris installed on SPARC and x86-based systems. It is managed by the svc:/network/loadbalancer/ilb:default service. It intercepts incoming requests from clients, decides which back-end server should handle the request based on load-balancing rules, and then forwards the request to the selected server. It also performs optional health checks and provides the data for the load-balancing algorithms … [Read more...] about How to Configure Integrated Load Balancer (ILB) in Solaris 11

Network bridges are used to connect separate network segments. When connected by a bridge, the attached network segments communicate as if they were a single network segment. Bridging is implemented at the datalink layer (L2) of the networking stack to connect subnetworks together. Using a bridge configuration simplifies the administration of the various nodes in the network by connecting them to a single network. By connecting these segments through a bridge, all the nodes share a single … [Read more...] about How to configure Network Bridging in Solaris 11

In production environments, it is important to eliminate any single point of failure. IP network multipathing (IPMP) provides a mechanism for building redundant network interfaces to guard against failures with network interfaces, cables, switches, or other networking hardware. In addition to eliminating any single point of failure, the IPMP load spreading feature increases the machine’s bandwidth by spreading the outbound load among all the cards in the same IPMP group. When compared with … [Read more...] about How to configure IPMP in Solaris 11 – Active-Active & Active-Standby

Link aggregations enable you to pool multiple datalink resources that you administer as a single unit. By combining the resources of the multiple datalinks and dedicating them to serving the system’s network operations, the system’s performance is greatly improved. The image above shows an example of a link aggregation configured on a system, in which an aggregation aggr1 consists of 4 underlying datalinks, net0 through net3. These datalinks are dedicated to serving the traffic that … [Read more...] about How to Configure Link Aggregation in Solaris 11 (Trunk V/s Datalink multipathing (DLMP))