When an application
server, say Server1, fails, the following occurs:
- The connections from the client also fail.
- Other connections through TSA1 to Server2 and Server3 survive.
- Clients who were sending traffic to the failed application server must send traffic to their alternate TSA (TSA2).
- IPFE-A1 routes new connection requests to the remaining application servers (Server2 and Server3). If all application servers in a target set fail, and IPFE-A1 receives a request for a new connection to TSA1, it optionally notifies the client the request cannot be fulfilled using either a TCP RST packet (for TCP connections) or a configurable ICMP message.