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<FORM>
<H2>Routing Gateway Configuration</H2>
<P>
With dynamic routing, it is often useful to add a static route
into the kernel routing table, or to force the routing daemon to 
ignore route updates for a network. These measures provide greater 
control over the path that packets take to known destinations. For
example, you might create a default route to your Internet service 
provider, forcing packets for an unknown remote host to always be 
sent to the ISP router.
</P>
<P>
The IRIX kernel compares the destination address in each network packet 
that it receives to the addresses of the local network interfaces. If
the address does not match any interface address, it searches the kernel 
routing table for the best matching address. If it finds a matching
<I>Host route</I> (an exact address match) or a matching <I>Network route</I>, 
it sends the packet to the gateway that is designated in the matching
routing table entry. If there is no other route, the packet is forwarded 
to the gateway for the default route (host route for 0.0.0.0) if a default 
host route is listed in the table.
<P>
Use the Gateway Configuration form to change the following parameters:
</P>
<P>
<STRONG>Enable dynamic routing</STRONG> This selection turns routing on 
and off for this system. Select Yes to turn on dynamic routing and No to turn it
off. Typically, any system connected to a company intranet that
contains more than one network should have dynamic routing turned
on.
</P>
(Default value: Yes)
<P>
Note: This is identical to the <I>Enable dynamic routing</I> selection on the
Dynamic Routing form. You can change the setting from either form (your
selection is automatically applied to the Dynamic Routing form to update it). 
</P>
<P>
<STRONG>Add New Gateway</STRONG> This field contains the packet destination 
address of a gateway that you want to add. Enter the address and select the
<VAR>Add New Gateway</VAR> button to display the Add New Gateway form.
Complete the entry fields on this form and click the <VAR>Ok</VAR> button 
to add the gateway. Enter the packet destination address in dotted decimal 
(such as 1.2.3.4 for a host route or 1.2.0.0 for a network route) or
hexadecimal (such as 0x01020304 or 0x01020000) notation.
</P>
(Default value: none)
<P>
<STRONG>Edit Selected Gateway</STRONG> This list contains the addresses of
active gateways. Select a destination address from the list and select
the <VAR>Edit Selected Gateway</VAR> button to display the Edit Gateway 
form and make your changes. When you finish, click the <VAR>Ok</VAR> button 
to put the changes in effect.
</P>
(Default value: none)
<P>
<STRONG>Delete Selected Gateway</STRONG> Select a destination address from
the list and click the <VAR>Delete Selected Gateway</VAR> button to remove 
the address from the list. Then click the <VAR>Ok</VAR> button to put the 
changes in effect.
</P>
(Default value: none)
<P>
<STRONG>IP address of destination:</STRONG> This information field contains 
the currently selected destination address in the Add or Edit Gateway form. 
This field is not editable.
</P>
<P>
<STRONG>IP address of gateway system:</STRONG> This is the address of 
a system closer to the destination that knows how to reach the
destination address. Enter a fully qualified host address in dotted 
decimal (such as 1.2.3.4) or hexadecimal (such as 0x01020304) notation.
</P>
(Default value: none)
<P>
<STRONG>Type of destination address:</STRONG> This field specifies
the type of the destination address. If the address is a host address
(such as 1.2.3.4) or the default destination 0.0.0.0, then select 
<VAR>host</VAR>. If the address is a network address (such as 1.2.3.0), 
then select <VAR>net</VAR>.
</P>
(Default value: none)
<P>
<STRONG>Mode of network gateway:</STRONG> If this gateway is running a 
routing daemon, select <VAR>active</VAR>; this selection notifies the
gateway that it should exchange routing information on the network. Select 
<VAR>passive</VAR> if the gateway should not exchange routing information.
</P>
(Default value: none)
<P>
<STRONG>Number of hops from route interface to destination:</STRONG>
This is the number of systems between the Internet Gateway and the 
destination system, including the Gateway itself. A hop count of 
<EM>0</EM> means that the destination is the local host; a hop count 
of <EM>16</EM> is considered infinite and no packets will ever be 
forwarded there.
</P>
(Default value: 1)
<CENTER>
<INPUT TYPE="button" VALUE="Back to Form" onClick="self.history.go(-1)">
</CENTER>
</FORM>
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