IronPort - advanced configuration guide

Verifying NIC Pairing
7-8
Choose the operation you want to perform:
- FAILOVER - Manually failover to other port.
- DELETE - Delete a pairing.
- STATUS - Refresh status.
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Choose the operation you want to perform:
- MEDIA - View and edit ethernet media settings.
- PAIRING - View and configure NIC Pairing.
- VLAN - View and configure VLANs.
- LOOPBACK - View and configure Loopback.
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You should verify that NIC pairing is working correctly. To do so:
Cisco IronPort AsyncOS 7.6 for Email Advanced Configuration Guide
Chapter 7 Advanced Network Configuration
Step 1 Use the ping command in the CLI to test your paired interface by “pinging” an IP address on the same
subnet as the NIC pair that has been confirmed to return a ping by an independent source.:
mail3.example.com> ping x.x.x.x
Step 2 Issue a failover command (etherconfig -> pairing -> failover). Wait 15 seconds.
Step 3 Use the ping command in the CLI to test your paired interface again with the backup NIC as the active
interface.
Step 4 Finally, return the NIC pair to its default state by issuing one more failover so that the primary interface
is now active.
Virtual Local Area Networks (VLANs)
VLANs are virtual local area networks bound to physical data ports. You can configure VLANs to
increase the number of networks the Cisco IronPort appliance can connect to beyond the number of
physical interfaces included. For example, a Cisco IronPort C6x appliance has three interfaces: Data 1,
Data 2, and Management. VLANs allow more networks to be defined on separate “ports” on existing
listeners. (See Appendix B, “Accessing the Appliance” for more information.) You can configure
multiple VLANs on any physical network port. Figure 7-1 provides an example of configuring several
VLANs on the Data 2 interface.
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