User manual

and start the servers.

Place the firmware file and recovery file in your BOOTP server’s path, e.g.: /tftpboot/

Edit your BOOTP server configuration to contain an entry for the SnapGear unit. Specify

the recovery image file (.sgr) as the file to boot. The entry may look something like:

host SG300 {

hardware ethernet 00:D0:CF:01:02:03;

filename "SG300-Recover_v1.0.2_20060224.sgr";

fixed-address 192.168.0.100;

}

(Re)start the BOOTP server.

Attach the SnapGear unit’s LAN port or first port of the SnapGear unit’s switch directly to

your PC using a crossover cable.

Hold in the Reset/Erase button while applying power, keep it held in for 3 seconds.

After 20 – 30 seconds, the SnapGear unit loads the file from the DHCP/BOOTP server

and the Heart Beat/H/B light begins flashing.

Browse or telnet/ssh to your SnapGear unit and perform a flash upgrade as per usual to

reprogram its flash using the final firmware image (.sgu).

Note

If the SnapGear unit is uncontactable, but the Heart Beat/H/B light is flashing, it may be

due to bad configuration. If this is the case, hit the Reset/Erase button twice within 2

seconds to restore factory default configuration, and perform the network boot again.

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Appendix D – Recovering From a Failed Upgrade