| Configuring the WSM
using Device Manager |
  
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Methods of firewall load balancing
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Basic FWLB
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For simple networks, this method uses a combination of static routes and redirection filters. A WSM filter on the public-side splits incoming traffic into streams headed for different firewalls. To ensure persistence of session traffic through the same firewall, distribution is based on a mathematical hash of the IP source and destination addresses. For more information about basic FWLB, see "Basic FWLB" on page 306.
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Four-Subnet FWLB
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For larger networks, the four-subnet method is more often used in networks that require high-availability solutions. This method adds Virtual Router Redundancy Protocol (VRRP) to the configuration. As in basic FWLB, four-subnet FWLB uses the hash metric to distribute firewall traffic and maintain persistence. For more information, see "Four-Subnet FWLB" in the Web OS Switch Software 10.0 Application Guide, part number 212777-A.
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See also: