Additional Network Routes

About this task

The Additional Network Routes dialog box allows you to specify routing of requests to specified IP ranges via specified gateways. Additional routes can enable the Email Appliance to process requests from client machines whose IP addresses reside outside of the native subnet of the Email Appliance.

Important

Adding additional routes is an advanced option and should only be used if you have a thorough understanding of both routing and your network topology. Adding routes incorrectly can make the administrative user interface inaccessible.

Procedure

To add a route:
Choose from the following:
- Enter a descriptive Route Name.
- Enter the requested Destination IP Range in CIDR format.
  Important
  This range must not include the static IP address of the Email Appliance and must be outside the subnet of the Email Appliance.
- Enter the Gateway IP Address to which you want the requested IP addresses routed. This represents the next hop that can be used to reach the destination IP specified, and should be on the same subnet as the Email Appliance.
- Click Add.
  To disable a route, you must delete it. To modify a route, you must delete it and re-add the modified route information.
To delete a route:
Choose from the following:
- Select the check box beside the route that you want to delete.
- Click Delete.
  The route is de-activated and removed from the routing table.
  
  Note
  If you change your network configuration or topology, it may be necessary to alter any additional routes you have created.
  
  Note
  If a route is specified that makes the administrative user interface inaccessible, you must connect a laptop to the configuration port on the back of the appliance and access the Email Appliance via the IP address 172.24.24.172 to gain access to the appliance and delete the incorrect routes.