Routing problems

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Author: Rod Roark
Date:  
Subject: Routing problems
Hmm, I can ping your IP address from here. But your router address
63.88.193.129 doesn't seem to be in the path. Perhaps your gateway
address should be 63.88.193.145?

traceroute to 63.88.193.147 (63.88.193.147), 30 hops max, 38 byte packets
 1  alpha (192.168.1.1)  0.260 ms  0.229 ms  0.177 ms
 2  ar1.phx1.phoenixdsl.net (64.6.184.1)  11.235 ms  11.001 ms  11.055 ms
 3  gr1.phx1.dbn.net (216.178.184.37)  11.902 ms  11.789 ms  11.878 ms
 4  a8-0-0-818-tr1.sfo3.dbn.net (216.178.214.65)  35.408 ms  49.653 ms  35.252 ms
 5  a9-0-0-645-tr1.sfo1.dbn.net (216.178.215.118)  51.687 ms  51.676 ms  55.278 ms
 6  e2-1-hr2.sfo1.dbn.net (216.178.213.122)  66.473 ms  118.897 ms  115.639 ms
 7  br1-ge8-0-0.sfo1.dbn.net (216.178.223.138)  215.228 ms  468.715 ms  883.105 ms
 8  TBD (157.130.203.25)  40.088 ms  79.442 ms  39.064 ms
 9  158.ATM2-0.XR2.SJC1.ALTER.NET (146.188.144.38)  40.342 ms  39.535 ms  40.144 ms
10  192.at-2-2-0.TR2.SAC1.ALTER.NET (152.63.51.54)  43.990 ms  43.819 ms  43.749 ms
11  127.at-6-0-0.TR2.NYC9.ALTER.NET (152.63.9.250)  126.384 ms  128.116 ms  126.960 ms
12  186.ATM6-0.XR2.BOS1.ALTER.NET (152.63.20.201)  117.676 ms  117.129 ms  117.140 ms
13  190.ATM9-0-0.GW1.BOS1.ALTER.NET (146.188.176.237)  118.682 ms  118.839 ms  118.662 ms
14  63.88.193.145 (63.88.193.145)  120.196 ms  120.676 ms  119.814 ms
15  63.88.193.147 (63.88.193.147)  135.672 ms  134.885 ms  134.578 ms                                        


-- Rod
----------------------------------------------------------------------
Sunset Systems                           Preconfigured Linux Computers
http://www.sunsetsystems.com/                      and Custom Software
----------------------------------------------------------------------


On Fri, 22 Sep 2000, David Demland wrote:
> OK, I give up. I thought I understood routing but I guess I don't. I am
> still trying to set up a T1 firewall here at work. I am using Storm Linux
> (for the first time). The following is the output from both ifconfig and
> route -n:
>
> eth0      Link encap:Ethernet  HWaddr 00:D0:B7:BF:AA:60
>           inet addr:192.168.1.204  Bcast:192.168.1.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:5598 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:59 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:100
>           Interrupt:10

>
> eth1      Link encap:Ethernet  HWaddr 00:D0:B7:BF:A6:C4
>           inet addr:63.88.193.147  Bcast:63.88.193.255  Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:191 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:885 errors:0 dropped:0 overruns:152 carrier:0
>           collisions:0 txqueuelen:100
>           Interrupt:9 Base address:0x2000

>
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           UP LOOPBACK RUNNING  MTU:3924  Metric:1
>           RX packets:824 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:824 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0

>
> Kernel IP routing table
> Destination     Gateway         Genmask         Flags Metric Ref    Use
> Iface
> 192.168.1.0     0.0.0.0         255.255.255.0   U     0      0        0 eth0
> 63.88.193.0     0.0.0.0         255.255.255.0   U     0      0        0 eth1
> 0.0.0.0         63.88.193.129   0.0.0.0         UG    0      0        0 eth1

>
> Currently eth0 is for the internal network, thus the 192.168.1.204 IP
> address. The second NIC, eth1, goes to the T1 line which the router has a
> gateway IP address of 63.88.193.129. Since we have like 40 IPs I have
> selected the internal IP for eth1 to be 63.88.193.147.
>
> I can ping any of the internal computers, but when I try to ping the gateway
> or the outside world I get nothing back. What is my problem?
>
> Thank You,
>
> David Demland
> Qa/Testing Manager
> CADTEL Systems, Inc.
> 11201 N. Tatum Ste. 200
> Phoenix, AZ 85028
> (602) 953-4888
> Fax: (602) 953-4833
>