Cisco Cisco Email Security Appliance C160 Mode D'Emploi

NIC pairing allows you to combine any two physical data ports in order to provide 
a backup Ethernet interface if the data path from the NIC to the upstream Ethernet 
port should fail. Basically, pairing configures the Ethernet interfaces so that there 
is a primary interface and a backup interface. If the primary interface fails (i.e. if 
the carrier between the NIC and the upstream node is disrupted), the backup 
interface becomes active and an alert is sent. Within IronPort documentation, NIC 
pairing is synonymous with NIC teaming.

You can create more than one NIC pair, providing you have enough data ports. 
When creating pairs, you can combine any two data ports. For example:

Data 1 and Data 2

Data 3 and Data 4

Data 2 and Data 3

etc.

NIC pairing is not available on C1x appliances or M-Series appliances. Some 
C3x, C6x, and X10x appliances contain a fiber optic network interface option. If 
available, you will see two additional ethernet interfaces (Data 3 and Data 4) in 
the list of available interfaces on these appliances. These gigabit fiber optic 
interfaces can be paired with the copper (Data 1, Data 2, and Management) 
interfaces in a heterogeneous configuration.

VLANs (see 

) are only allowed 

on the primary interface.

- PAIRING - View and configure NIC Pairing.

- VLAN - View and configure VLANs.

- LOOPBACK - View and configure Loopback.

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