MSM7xx Controllers Configuration Guide v6.4.0

• Metric: Priority of a route. If two routes exist for a destination address, the controller chooses
the one with the lower metric.
• Delete: Select the garbage can icon to delete a route. If the icon has a red line through it,
then the route cannot be deleted.
Default routes
The Default routes table shows all default routes on the controller. Default routes are used when
traffic does not match any route in the Active routes table. You can add routes by specifying the
appropriate parameters and then selecting Add.
The routing table is dynamic and is updated as needed. If more than one default route exists, the
first route in the table is used.
The following information is shown for each default route:
• Interface: The port through which traffic is routed. When you add a route, the controller
automatically determines the interface to be used based on the Gateway address.
• Gateway: IP address of the gateway to which the controller forwards routed traffic (known as
the next hop).
An asterisk is used by system routes to indicate a directly connected network.
• Metric: Priority of a route. If two routes exist for a destination address, the controller chooses
the one with the lower metric.
• Delete: Select the garbage can icon to delete a route. If the icon has a red line through it,
then the route cannot be deleted.
Persistent routes
Persistent routes are automatically deleted and then restored each time the interface they are
associated with is closed and opened. When the routes are active, they also appear in the Active
routes table.
PPTP client
The controller provides an Auto-route discovery option to enable it to automatically discover and
add routes for IP addresses on the other side of a Point-to-Point Tunnelling Protocol (PPTP) tunnel.
The addresses must be part of the remote domain as specified on the Controller >> VPN > PPTP
client page. Routes are added only when an attempt is made to access the target addresses.
Settings
About PPTP client routes (Internet port)
If you disabled the Auto-route discovery option (VPN > PPTP client), or if you need to access
IP addresses that are not part of the specified domain, you must define the appropriate persistent
routes.
About PPTP server routes (Internet port)
Activation of the route can be triggered by a specific username. When a user establishes a
connection with the controller PPTP server, its username is checked against the persistent routes
list and if a match is found, the route is enabled.
Network address translation
Network address translation (NAT) is an address mapping service that enables one set of IP
addresses to be used on an internal network, and a second set to be used on an external network.
NAT handles the mapping between the two sets of addresses.
62 Network configuration