Can't ping internet. Need help

Applications IP Networking
1

I am running AIX, and just newly installed this sytem.

I thought I had all the settings correct, but may be wrong.

I set up the DNS to point to my router which has DNS relay.
Router IP is 192.168.0.1
AIX server IP is 192.168.0.164

I can ping my router with no problem. When I do a traceroute to my router, it says :
trying to get source for 192.168.0.1
source should be 192.168.0.164

I have problem when I try to ping www.yahoo.com I get:

"PING www.yahoo-ht2.akadns.net: (209.191.93.52) : 56 data bytes
0821-069 ping: sendto: Cannot reach the destination network.
ping: wrote www.yahoo-ht2.akadns.net 64 chars, ret=-1"

Now, I do a traceroute for www.yahoo.com, I get:

"Trying to get source for www.yahoo.com
source should be 127.0.0.1
traceroute to www.yahoo-ht2.akadns.net (209.191.93.52) from 127.0.0.1, 30 hops max
sendto: Cannot reach the destination network."

It seems the traceroute to my router is yahoo is using 127.0.0.1 (loopback) as source. Could this be the problem or something else?

2

Looks to me like you're missing a default router. Try netstat -nr and see if a default route is listed. If not, use smit to set one.

3

How do I tell if I am missing a default route?

# netstat -rn
Routing tables
Destination      Gateway           Flags   Refs     Use  If   PMTU Exp Groups

Route Tree for Protocol Family 2 (Internet):
127/8            127.0.0.1         U        33     3851  lo0     -   -
192.168.0.0      192.168.0.164     UHSb      0        0  en0     -   -  =>
192.168.0/24     192.168.0.164     U         2       85  en0     -   -
192.168.0.1      192.168.0.1       UGHW      1        0  en0     -   -
192.168.0.164    127.0.0.1         UGHS      0       17  lo0     -   -  =>
192.168.0.164/32 192.168.0.1       UGc       0        0  en0     -   -
192.168.0.255    192.168.0.164     UHSb      0        4  en0     -   -

Route Tree for Protocol Family 24 (Internet v6):
::1              ::1               UH        0        0  lo0 16896   -
4

It is listed in the output with the name "default" - you don't have one.

Here is the top few lines when I do it on one of my servers (IP addresses edited).

(root@nimrod):/# netstat -nr
Routing tables
Destination      Gateway           Flags   Refs     Use  If   Exp  Groups

Route Tree for Protocol Family 2 (Internet):
default         333.444.555.666    UG       25 2442977259 en3      -      -
127/8           127.0.0.1          U        13    349485 lo0      -      -
333.444.555/24  333.444.555.667    UG        0         0 en1      -      -

Since you don't have default listed, it is trying to route through your loopback address instead. I don't remember the exact path to set it, but try smitty tcpip, setting the default router should be within one of the items under that menu.

5

Yep. Select the Minimum Configuration option and it's a couple of lines from the bottom. Select F6 to see the command line for setting the info (/usr/sbin/mktcpip). I do that to see what the command line looks like and then run man mktcpip (in this case) to try and understand the command better.

Carl

6

Thanks guys. Thats what it was. I am now connected.

I need the Staples "That was easy" button......

7

But you already have it. http://www.unix.com :smiley:

Carl