Appendix B I/O Switching Via Snmp - Magma EB7-X8G2 User Manual

APPENDIX B I/O Switching Via SNMP
The following instructions involve configuring 2 servers that are exactly identical to be able to switch I/Os at any given
time. The switch I/O feature can be used as a failover mechanism if one server went down or if the I/Os need to be
designated to Server 2 for any reason. It should be noted that this feature is not yet applicable to cases where the two
host machines are not identical (i.e. taking the I/Os of a serial card away from and IBM server and re-designating them
to a Dell server).
Further, Server 1 and Server 2 must share the same processors, chipsets and overall architecture, for example, two IBM
Blade servers.
In the next example we will use the EB7-x8G2RAS chassis with Magma's fiber EIF card, 01-04978-05, connected to two IBM
servers. Similarly, the EB7-x8G2RAS chassis can accommodate two regular EIF cards in slots 0 and 1, each connected via
an iPass cable to the two servers. Finally, this test was performed under VMware ESX4.1.
Step 1: Make sure all systems are off – after doing so, connect both servers to the uplink EIF card in the Magma chassis.
Do not turn the servers on just yet. The dual uplink is labeled Server 1 and Server 2, which correspond to the specified
fiber ports, as shown below.
 Make sure the chassis is off
 Insert and secure the I/O cards in slots 1 through 7 of the chassis
Step 2: Power on the Magma chassis.
BY DEFAULT, ALL I/O ARE ASSIGNED TO SERVER 1
In this example, we will refer to server 2 as the backup server, and server 1 as the main (primary) server.
Step 3: Hook the chassis up to some type of NAT with an addressing scheme of 192.168.X.X so you can access and or
change the networking properties
Step 4: Power on server 1 and boot it into the WMware ESX4.1 shell.
Once WMware ESX 4.1 is booted, connect to Server 1 via VSphere and mark our target PCIe device for pass-through as
08:00.0 and 08.00.1. This device is a PCIe card plugged into the Magma chassis, whose I/Os we wish to re-direct, in this
case an Oxford Semiconductor serial card.
EB7-X8G2 | APPENDIX B I/O Switching Via SNMP
Magma
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