Specifications

Additional Setup Options
BIG-IP® Reference Guide 12 - 5
◆ Configuring email on the BIG-IP
There are some special requirements that you need to take into account
when configuring email on the BIG-IP.
Addressing routing issues
The BIG-IP must communicate properly with network routers, as well as
with the servers, firewalls, and other routers that it manages. Because there
is a variety of router configurations, and varying levels of direct control an
administrator has over each router, you need to carefully review the router
configurations in your own network. You may need to change some routing
configurations before you put the BIG-IP into production.
The BIG-IP supports static route configurations, dynamic routing (by way
of BGP4, RIP1, RIP2, and OSPF), and subnetting. However, the BIG-IP is
also designed to eliminate the need for you to modify routing tables on a
router that routes to a BIG-IP. Instead, the BIG-IP uses Address Resolution
Protocol (ARP) to notify routers of the IP addresses that it uses on each
interface, as well as on its virtual servers.
The following sections address these common routing issues:
• Routing from a BIG-IP to a gateway to the external network
• Routing from content servers to the BIG-IP
• Routing between a BIG-IP to content servers that are on different logical
networks
• Setting up dynamic routing with GateD
• Configuring static routes in /config/routes
Routing from a BIG-IP to a gateway to the external network
The BIG-IP needs a route to the external network. For most configurations,
this should be configured as the default gateway pool on the BIG-IP.
During installation, you were prompted to configure a default route for the
BIG-IP. If you need to change the default route at this time, you can set a
new default route by editing the default gateway pool.
To change the default route from the Setup utility
1. From the command line, type config.
The Setup utility menu opens.
2. Choose the Default Gateway Pool option.
3. Type the IP address of the gateway you want to add to the default
gateway pool.
4. Save and exit.
To change the default route using the Configuration utility
1. In the navigation pane, click System.
The System Properties screen opens.