Sun Microsystems Netra, Руководство пользователя

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14-2 Netra Internet Server 3.1 User’s Manual—September 1996
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If client host systems are required to use the dynamic router, they must either
run programs that can communicate using these protocols or they must specify
the dynamic router as a default router.
When the Netra server is configured as a dynamic router, broadcasting RIP
information over point-to-point (PPP) links can be enabled or disabled. If
additional PPP links are defined after the dynamic router is configured, you
must reconfigure the dynamic router to ensure that it is aware of the new links.
Static Router
A static router relies on the manual addition of routes. Routing information is
not exchanged with other routers.
Static routers are typically used in very stable, simple networks. An example of
such a network would be a single LAN connected to the Internet or to another
network over a PPP link.
If machines on the LAN require a static router, it must be specified as a default
router.
Setting a Default Route Over a PPP Link
If you require a default route over a PPP link, choose one of the following
options.
•
If both local and remote host addresses are statically assigned, you can use
either of them as the default route.
•
If the remote host address is dynamically assigned, use the local host
address as the default route.
•
If the local host address is dynamically assigned, use the remote host
address as the default route.
If both the local and the remote host addresses are dynamically assigned, you
cannot use a default route over a PPP link.
Not a Router
A non-gateway system need not be a router in networks that already have
dynamic routers. The Netra server will listen for dynamic routers to broadcast
route information using the RIP and the ICMP router discovery protocols.