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Cisco Cisco Email Security Appliance C160 Mode D'Emploi

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33-16
Cisco AsyncOS 8.0.1 for Email User Guide
 
Chapter 33      Advanced Network Configuration
  Direct Server Return
When enabling DSR, the following rules apply:
–
All systems use the same Virtual IP (VIP) address
–
All systems must be on the same switch and subnet as the load balancer
Figure 33-4
Using DSR to Load Balance Between Multiple Cisco Appliances on a Switch
Enabling the Loopback Interface via the etherconfig Command
Once enabled, the loopback interface is treated like any other interface (e.g. Data 1):
IronPort Appliance 1
VIP 1.1.1.1/32
A:B:C:D:E:1
IronPort Appliance 2
VIP 1.1.1.1/32
A:B:C:D:E:2
Load Balancer
VIP 1.1.1.1
Default Gateway
Switch
mail3.example.com> etherconfig
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.
- MTU - View and configure MTU.
[]> loopback
Currently configured loopback interface:
Choose the operation you want to perform:
- ENABLE - Enable Loopback Interface.