ISA550W and ISA570W support four SSIDs. By default, all SSIDs are disabled. For security purposes, we strongly recommend that you configure each SSID with the highest level of security that is supported by the devices into your wireless network.
Multiple SSIDs can segment the wireless LAN into multiple broadcast domains. This configuration helps you to maintain better control over broadcast and multicast traffic, which affects network performance.
Refer to the following topics:
• Configuring Wireless Security