Early Warning System
Mainframe Product
Early Warning System
More Information
Early Warning System provides proactive monitoring. Do you have certain TCP connections which MUST be up for business reasons? Have you ever wanted to know if your mainframe-based web applications were running slowly? The Early Warning System provides a ‘heads-up’ for TCP connections or applications which may be heading for trouble. That is, they may be currently experiencing performance problems or will soon be experiencing performance problems.
Security is an on-going concern for everybody. Do you have certain SSL/TLS protocols which you do not want used, because they have known security holes? Do you have some cipher suites which you do not want to use, for the same reason? The Early Warning System provides a ‘heads-up’ for when connections are using those security methods.
- IP address
- Local port
- Remote port
- Congestion window size
- Round trip time
- Round trip variance
- Bytes out
- Retransmits
- Connection termination code
- Duplicate acks
- Session hung
- TCP session status
- Local congestion window going to zero
- Remote congestion window going to zero
- Out of order packets
- SSL/TLS protocol
- Cipher suite (both 2 character and 4 character)
How can Early Warning System help you?
- Warn you of failing connections.
- Warn you of retransmissions on network hardware or circuits,
- Alert you to connections which are transmitting excessive data.
- Warn you of response time problems
- Alert you to an application which is reaching its capacity limits.
Early Warning System will provide a ‘heads-up’ for TCP connections or applications which may be headed for trouble. They may be currently experiencing problems, or be getting close to doing so. If you want to anticipate and avoid problems on your mainframe network, you need Early Warning System!
Mainframe
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Early Warning System
The Early Warning System product is a complete mainframe-based system which provides nael-time monitoring of:
• Connection drops
• Congestion window
• Round trip time
• Round trip variance
• Retransmissions • Duplicate acknowledgments
• Bad status
• Hung connections
— All data is from the Network Management API
• Early Warning System warns you of problems BEFORE they occur
Baselining
• Baselining your network is a crucial task
• Remember!
— Shift changes
— Weekends
— Red letter days
• Re-baselining after changes in topology
Setting Thresholds
• One of the most difficult tasks is how to set thresholds
• What is a good round trip time?
• How many duplicate ACKs affect response time?
• Which connections may be hung?
