Znyx Networks bh5700 User Manual

The boot ROM is located on device 0 and contains the OpenArchitect 

zmon

 application that 

operates as a boot loader and includes a device bootstring. Device 1 contains the application  flash 
1 image of the Linux operating system and the OpenArchitect overlay file system. Application 
flash 1 is the primary working image for the switch. Device 2 contains the  application flash 2 that 
is an exact copy of application flash 1. You would only boot from this device if application flash 
1 is corrupted and you need to restore the switch to the factory shipped configuration. 

If the switch does not function after you initially change or reconfigure the image, you have 
several options for recovering from an error. First, try to 

telnet

 into the switch. If you are 

successful, remember to run 

zsync

 after fixing the problem. 

After attaching the system console cable, if the system boots, fix the problem that does not allow 
you to telnet to the box, run 

zsync

, and reboot. The problem is likely to be in the configuration 

files contained in 

/etc/rcZ.

. In order to telnet into the box, there must be a configured 

interface with a proper IP address. For example, zhp0 is configured with the IP address 10.0.0.42 
in the factory default configuration.

If you cannot 

telnet

, attach a console cable and Modem Eliminator Cable to the switch. A 

console cable ( PN A6900-63006) is included with each HP bh5700 ATCA 14-Slot Blade Server, 
and a Modem Eliminator Cable should be obtainable locally. You can also obtain the correct 
console cable from your Hewlett-Packard sales representative. Bring down the system and 

Ethernet Switch Blade User's Guide

release  3.2.2j

page 157