Nortel Networks 1000BASE-LX, 1000BASE-SX manual Flash memory storage, Switch software image storage

38 Chapter 1 BayStack 420 Switch

The response can be to send a trap, turn on destination address (DA) filtering, disable the specific port, or any combination of these three options.

The MAC address-based security feature is based on Nortel Networks BaySecure LAN Access for Ethernet, a real-time security system that safeguards Ethernet networks from unauthorized surveillance and intrusion.

For instructions to use the console interface (CI) to set up the RADIUS-based security feature, see Chapter 3, “Using the console interface,” on page 87.

Flash memory storage

Switch software image storage

The BayStack 420 Switch uses flash memory to store the switch software image. The flash memory allows you to update the software image with a newer version without changing the switch hardware (see “Software Download screen” on page 166). An in-band connection between the switch and the TFTP load host is required to download the software image.

Configuration parameters storage

All configuration parameters are stored in flash memory. These parameters are updated every 10 seconds (if a change occurs) or whenever a reset command is executed.

Warning: Do not power off the switch within 10 seconds of changing any configuration parameters. Powering down the switch within 10 seconds of changing configuration parameters can cause the changed configuration parameters to be lost.

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