User's Manual

Configuring GRE, NAT, RIPSO, and BFE Services
2-58
308625-14.00 Rev 00
Customizing NAT Synchronization Parameters
To customize the way NAT synchronization operates on a router, modify NAT
global attributes as described under the following sections:
Enabling and Disabling NAT Synchronization
NAT synchronization allows up to 10 routers to share NAT address translation
information. Routers in a synchronized configuration have up-to-date address
translation tables and can handle traffic that may be rerouted to them if a peer
router should shut down or fail.
When you disable synchronization, the router immediately drops all current TCP
connections to its peers.
Using the BCC
To enable or disable NAT synchronization, navigate to the global NAT prompt (for
example,
box; ip; nat
) and enter:
synch
<state>
state
is one of the following:
enabled
disabled
(default)
You must configure an IP interface on the router before you can enable NAT
synchronization. If you attempt to enable synchronization before configuring an
IP interface, you will see the following message:
A local IP interface must be configured before enabling
synchronization.
Topic Page
Enabling and Disabling NAT Synchronization
2-58
Setting the Synchronized Router ID 2-60
Setting the Synchronization Port 2-62
Customizing Keepalive Parameters 2-63