
Chapter 12
12 - 6
2. Click the System tab.
Look in the Default Gateway Pool list for the name of the default
gateway pool. Make sure you have the pool name before proceeding
to step 3.
3. In the navigation pane, click Pools.
The Pools screen opens.
4. In the list of pools, click the name of the default gateway pool.
The pool properties page for that pool opens.
5. In the Resources section of the screen, add or remove gateway IP
addresses.
6. Click the Apply button.
Routing from content servers to the BIG-IP
The content servers being load balanced by the BIG-IP need to have a
default route set to the internal shared floating IP alias of the BIG-IP. For
most configurations, this should be configured as the default route on the
content server.
For information about setting the default route for your content servers, refer
to the product documentation for your server.
Routing between a BIG-IP and content servers on different logical networks
If you need to configure the BIG-IP to use one or more nodes that actually
sit on a different logical network from the BIG-IP, you need to assign one or
more additional routes to get to those nodes. Set each node’s default route so
that traffic goes back through the BIG-IP internal interface.
In the following examples, the nodes are on 192.168.6.0/24 and the BIG-IP
internal interface is on 192.168.5.0/24. There are two possible situations
which you may have to address:
• 192.168.5.0/24 and 192.168.6.0/24 are on the same LAN (either sharing
media or with a switch or hub between them).
• 192.168.5.0/24 and 192.168.6.0/24 are on two different LANs with a
router between them.
Case 1: Same LAN
If the nodes are on the same LAN as the BIG-IP, you simply need to add an
interface route for 192.168.6.0/24 to an interface on the internal network.
You can add this route to the bottom of the /etc/rc.local file using the
following syntax, where <ip addr> is the IP address on the internal
interface:
route add -net 192.168.6 -interface <ip addr>
Note
You must have the interface defined correctly in the /etc/hosts file in order
to use this syntax.
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