Netopia R2121, Руководство пользователя

Страница: 119 / 280

IP Setup, SmartIP and Network Address Translation 10-15
Metric appears below Advertise Route Via RIP .
With RIP Metric you set the number of routers, from 1 to 15, between the sending router and the
destination router. The maximum number of routers on a packet’s route is 15. Setting RIP Metric to 1
means that a route can involve 15 routers, while setting it to 15 means a route can only involve one router.
■
Select ADD STATIC ROUTE NOW to save the new static route, or select CANCEL to discard it and return to
the Static Routes screen.
■
Up to 16 static routes can be created, but one is always reser ved for the default gateway, which is
configured using either Easy Setup or the IP Setup screen in System Configuration.
Modifying a static route
To modify a static route, select Display/Change Static Route in the Static Routes screen to display a table of
static routes.
Select a static route from the table and go to the Change Static Route screen. The parameters in this screen
are the same as the ones in the Add Static Route screen (see
“Adding a static route” on page 10-14 ).
Deleting a static route
To delete a static route, select Delete Static Route in the Static Routes screen to display a table of static
routes. Select a static route from the table and press Return to delete it. To exit the table without deleting the
selected static route, press the Escape key.
Rules of static route installation
The Netopia R2121 applies cer tain rules before installing enabled static routes in the IP routing table. An
enabled static route will not be installed in the IP routing table if any of the following conditions are true:
■
The static route’s Next Gateway IP Address matches the IP address used by a connection profile or the
Netopia R2121’s Ethernet por t.
■
The static route’s Next Gateway IP Address matches an IP address in the range of IP addresses being
distributed by MacIP or DHCP.
■
The static route’s Next Gateway IP Address is determined to be unreachable by the Netopia R2121.
■
The static route’s route information conflicts with a connection profile’s route information.
■
The connection profile associated with the static route is set for dial-in connections only, and there is no
incoming call connected to that connection profile.
■
The connection profile associated with the static route has a disabled dial-on-demand setting, and there is
no current connection using that connection profile.
A static route is already installed in the IP routing table will be removed if any of the conditions listed above
become true for that static route. However, an enabled static route is automatically reinstalled once the
conditions listed above are no longer true for that static route.