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Old 11-05-2004, 11:03 AM   #1
gabriele_101
Member
 
Registered: Oct 2001
Location: CAMBRIDGE, MA USA
Distribution: RH9 Kernel 2.4.20-18.9
Posts: 69

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Exclamation Saving Routing Table

Running on RH 9 Kernel 2.4.20-20.9:

Issue: Using route to configure the IP routing tables is not permanent (saved). If I use the RedHat GUI network configurator, I still do not get what I want. I would like the routing table to permanently look like this:
Code:
%route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
68.126.160.128  0.0.0.0         255.255.255.248 U     0      0        0 eth0
192.168.1.0     192.168.1.1     255.255.255.0   UG    0      0        0 eth1
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         68.126.160.129  0.0.0.0         UG    1      0        0 eth0
Lines in BLUE are command line input, lines in RED are lines that I do not want present, while lines in GREEN are lines that are OK.

QUESTION: How do I store the above routing table so that restarting the network and/or rebooting the system (same issue) does not change it?

With my network settings (see end for ifconfig information) the routing table is set up like this by default:
Code:
%route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
68.126.160.128  0.0.0.0         255.255.255.248 U     0      0        0 eth0
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth1
0.0.0.0         68.126.160.129  0.0.0.0         UG    1      0        0 eth0
To get the routing table to look the way I want it to look, I can manually run these commands:
Code:
%route del default
%route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.1.1
And then the routing table looks like this (as desired):
Code:
%route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
68.126.160.128  0.0.0.0         255.255.255.248 U     0      0        0 eth0
192.168.1.0     192.168.1.1     255.255.255.0   UG    0      0        0 eth1
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         68.126.160.129  0.0.0.0         UG    1      0        0 eth0
Of course, as soon as I restart the network (or reboot)....
Code:
%service network restart
Shutting down interface eth0:                              [  OK  ]
Shutting down interface eth1:                              [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Setting network parameters:                                [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:                                [  OK  ]
Bringing up interface eth1:                                [  OK  ]
I'm back to square one:
Code:
%route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
68.126.160.128  0.0.0.0         255.255.255.248 U     0      0        0 eth0
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth1
0.0.0.0         68.126.160.129  0.0.0.0         UG    1      0        0 eth0
If, on the other hand, I use the redhat-config-network command to set up static routing table entries (192.168.1.0/255.255.255.0 gw 192.168.1.1 for eth1 and 0.0.0.0/0.0.0.0 gw 68.126.160.129 for eth0), I still do not get what I want:
Code:
%route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
68.126.160.128  0.0.0.0         255.255.255.248 U     0      0        0 eth0
192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
169.254.0.0     0.0.0.0         255.255.0.0     U     0      0        0 eth1
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth1
0.0.0.0         68.126.160.129  0.0.0.0         UG    1      0        0 eth0
0.0.0.0         68.126.160.129  0.0.0.0         UG    1      0        0 eth0
Notice the extra
Code:
0.0.0.0         68.126.160.129  0.0.0.0         UG    1      0        0 eth0
line.

So the question remains, how do I get my routing tables to look like the desired one (the first) and have them stay that way?

NOTE: at a MINIMUM, If I do NOT delete the
Code:
0.0.0.0         192.168.1.1     0.0.0.0         UG    0      0        0 eth1
line, the server in question cannot access IP addresses OUTSIDE of the 192.168.1.0/255.255.255.0 network.

ifconfig output:
Code:
%ifconfig
eth0      Link encap:Ethernet  HWaddr 00:90:47:03:B3:4F
          inet addr:68.126.160.134  Bcast:68.126.160.135  Mask:255.255.255.248
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:31860 errors:0 dropped:0 overruns:0 frame:0
          TX packets:20428 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:26605262 (25.3 Mb)  TX bytes:3809272 (3.6 Mb)
          Interrupt:5 Base address:0xc000

eth0:0    Link encap:Ethernet  HWaddr 00:90:47:03:B3:4F
          inet addr:68.126.160.133  Bcast:68.126.160.135  Mask:255.255.255.248
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3693 errors:0 dropped:0 overruns:0 frame:0
          TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:2158534 (2.0 Mb)  TX bytes:2802 (2.7 Kb)
          Interrupt:5 Base address:0xc000

eth0:1    Link encap:Ethernet  HWaddr 00:90:47:03:B3:4F
          inet addr:68.126.160.132  Bcast:68.126.160.135  Mask:255.255.255.248
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3693 errors:0 dropped:0 overruns:0 frame:0
          TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:2158534 (2.0 Mb)  TX bytes:2802 (2.7 Kb)
          Interrupt:5 Base address:0xc000

eth1      Link encap:Ethernet  HWaddr 00:50:8D:FB:E3:F4
          inet addr:192.168.1.13  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:3693 errors:0 dropped:0 overruns:0 frame:0
          TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100
          RX bytes:2158534 (2.0 Mb)  TX bytes:2802 (2.7 Kb)
          Interrupt:11

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:4825 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4825 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:3175032 (3.0 Mb)  TX bytes:3175032 (3.0 Mb)
Last edited by gabriele_101; 11-05-2004 at 04:54 PM.
 
Old 11-05-2004, 04:22 PM   #2
gabriele_101
Member
 
Registered: Oct 2001
Location: CAMBRIDGE, MA USA
Distribution: RH9 Kernel 2.4.20-18.9
Posts: 69

Original Poster
Rep: Reputation: 15
OK, I am OFFICIALLY the only one who has not received a post. Guesses are WELCOME! ANYONE?

HEEEEEEEELP...........

-Gabriele
 
Old 11-18-2004, 04:02 AM   #3
bwtoh
LQ Newbie
 
Registered: Sep 2004
Posts: 10

Rep: Reputation: 0
Poor thing... have you found the answer ?

I am not 100% sure... but
try this:

I think the entries in the routing table are stored permanently in individual ethX.route files, for each network card (NIC).

eg :
/etc/sysconfig/networking/devices/eth0.route

The contents of these type of files should be something like this :

GATEWAY0=10.200.12.199
NETMASK0=255.255.255.240
ADDRESS0=172.28.171.30
...
...



Search the net for more answers.
Hope this helps and not a mislead.
Good luck.
 
Old 11-18-2004, 07:30 AM   #4
peter_robb
Senior Member
 
Registered: Feb 2002
Location: Szczecin, Poland
Distribution: Gentoo, Debian
Posts: 2,458

Rep: Reputation: 48
And the normal setups are in the /etc/sysconfig/network-scripts/ifcfg-eth~ files
Make sure only the ifcfg-eth0 file specifies a GATEWAY..
Also check /etc/sysconfig/network and make sure GATEWAY is not specified there.
 
  


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