F5 520, Manual

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Chapter 1
1 - 10
prompts you to configure more external interfaces if you want. It is
important to select the correct interfaces based on the way you have
connected the cables to the back of the unit. For more information
about interfaces, see Interfaces, following.
3. Connect the interface labeled Net2 (number 10 in Figure 1.4) to the
network that houses the array of servers, routers, or firewalls that
the controller load balances.
4. If you have a hardware-based redundant system, connect the
fail-over cable to the fail-over port on each unit (number 7 in Figure
1.4).
5. Connect the power cable to the controller power in (number 2 in
Figure 1.4), and then connect it to the power source.
Interfaces
This platform can have as few as one network interface. It is helpful to
understand interface naming conventions before you perform configuration
tasks such as displaying interface status and settings, setting the media type,
and setting the duplex mode.
Interface naming conventions
By convention, the Ethernet interfaces on the platform take the name
<s>.<p>, where s is the slot number of the NIC, and p is the port number on
the NIC. As shown in Figure 1.7, for the 520/540 platform, slot numbering
is top-to-bottom, and port numbering is left-to-right. Note that slot 1
contains the two onboard NICs numbered 1.1 and 1.2. The numbers 2, 3,
and 4 in Figure 1.7 illustrate the slot numbering for the PCI expansion slots.
For example, if you installed a single port NIC in the PCI slot marked 2, the
port number would be 2.1.
Figure 1.7 520/540 platform slot and port numbering