The OptiView Application Troubleshooting Expert speeds up troubleshooting application and network performance issues by automatically validating that network services such as DHCP, DNS and 802.1X are available and operating correctly, ensuring that server and application connectivity is accessible by opening specific TCP ports on servers and reporting the round trip time as a combination of network latency and server connection set up time. Ensure WIN servers are operating efficiently by viewing resources including number of users, processor, memory and disk utilization and services and process that are running. A combination of layer 2 and layer 3 trace routes identifies the entire network path between the application client and the application server.
When analyzing captured packets collected by the OptiView analyzer, the Application Troubleshooting Expert provides detailed application flow analysis for various protocols such as DNS, DHCP,HTTP, HTTPS, SMTP and SMB and presents information such as:
- an overview of the protocols on the trace
- aggregate throughput for individual applications over time
- a list of servers and clients by protocol
- detailed transactions for each application layer protocol including a list of individual commands
- application turns
- throughput for each application transaction including payload vs. header data
- server response time from client request to first data sent by server
- connection setup time
- any issues detected during the application session
A bounce chart also shows at-a-glance information for connection setup times, connection setup packets, error packets and transport layer packets.
For network related performance problems, the expert will categorize the problems detected by OSI layers. It summarizes the address or name of the stations involved, and the position of frames in the capture file that trigger the Expert System to identify the problem. The Expert System will identify symptoms such as Excessive ARP, Excessive BOOTP, NFS Retransmission, TCP/IP checksum error, TCP/IP Fast Retransmission, TCP/IP Retransmission, TCP/IP Frozen Window, TCP/IP Long Ack and TCP/IP SYN Attack and many others. Double clicking on the Expert Symptom button displays the Expert Diagnosis window that provides a description of the station symptom, a probable cause and recommended action(s).