Load Balancing - Extreme Networks AG200 User Manual
Version 5.0
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Also See for AG200:
- Installation manual (80 pages) ,
- Hardware installation manual (40 pages) ,
- Hardware quick start manual (2 pages)
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High Availability and Load Balancing
Load Balancing
Load balancing distributes the testing of endpoints across all Sentriant AG ESs in a cluster. Sentriant AG
uses a hashing algorithm based on MAC or IP addresses to divide the endpoints between the ESs.
If the MAC address is unavailable (untestable endpoint) the IP address is used to determine which ES
should test an endpoint. If an ES detects an endpoint for which it is not responsible, it notifies the
correct ES of the endpoint and that ES takes over testing.
If an ES fails, any services that are protected by that ES may become inaccessible, depending on the
nature of the ES failure. However, the redundant services that are protected by the other ESs are still
available.
NOTE
Protected services are services that are running on any servers that sit on the eth1 side of the failed ES, such as
AD, DNS, DHCP, NTP, file server, print server, and so on.
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Sentriant AG Users' Guide, Version 5.0
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