Very Computer

by **lewis l** » Mon, 17 Jul 1995 04:00:00

On solaris 2.4, when I run the command "netstat -r" it displays:

Destination Gateway Flags Ref Use Interface
default router1 UG 0 1902

Since the network is connecting to a BCN router, how do I can tell
what the IP address "default" point to since the system still show
"default" when I run "netstat -nr".

Thanks for your help !

by **Casper H.S. D** » Mon, 17 Jul 1995 04:00:00

}On solaris 2.4, when I run the command "netstat -r" it displays:
}Destination Gateway Flags Ref Use Interface
}default router1 UG 0 1902
}Since the network is connecting to a BCN router, how do I can tell
}what the IP address "default" point to since the system still show
}"default" when I run "netstat -nr".

"default" points to all addresses not pointed to by other routes.
(It's 0.0.0.0, but that's only by convention)

Casper
--
Casper Dik - Network Security Engineer - Sun Microsystems
This article is posted from my guest account at the University

Opinions expressed here are mine (but you're welcome to share them with me)

by **Alan Hann** » Mon, 17 Jul 1995 04:00:00

: }On solaris 2.4, when I run the command "netstat -r" it displays:

: }Destination Gateway Flags Ref Use Interface
: }default router1 UG 0 1902

: }Since the network is connecting to a BCN router, how do I can tell
: }what the IP address "default" point to since the system still show
: }"default" when I run "netstat -nr".

: "default" points to all addresses not pointed to by other routes.
: (It's 0.0.0.0, but that's only by convention)

Perhaps you mean what is the ip address towards which the default points...
Well, it kind of does this, from one frame of mind:

default --> 0.0.0.0 -> router1 -> 10.1.1.1
^ Pretending that router1s
IP address is 10.1.1.1.

Of course, you could obtain the IP address of router1 by doing one of the
following:

1) cat /etc/defaultrouter
2) nslookup router1

I just thought you meant how do you know what ip the gateway is, since
that is what the default points to.....

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While most peoples' opinions change, the conviction of their
correctness never does.

by **lewis l** » Tue, 18 Jul 1995 04:00:00

What is the purpose of having the default point to '0.0.0.0' ?
With the BCN router, it can route to many different network. If
the default point to '0.0.0.0', how can the system reach the
other network using this default value ? Note that we do not have
the file /etc/defaultroute. The solaris machine discover this default
using router discovery protocol.