Cisco Cisco Email Security Appliance X1070 User Guide

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Cisco AsyncOS 8.0.1 for Email User Guide
 
Appendix B      Assigning Network and IP Addresses
  Strategies for Connecting Your Cisco Appliance
The number of Cisco appliance interfaces that you choose to connect and how you address them should 
be dictated by the complexity of your underlying network. It is not necessary to connect multiple 
interfaces if your network topology or data volumes do not call for it. It is also possible to keep the 
connection simple at first as you familiarize yourself with the gateway and then increase the connectivity 
as volume and network topology require it.