bob,
you set T1 ISP as your default and your replys from ping to the DSL ISP
comes from the T1?
like that: ping DSP-ISP
reply (coming from T1-ISP) xxx ms ???
well... if this is the behaviour... the error is your side :-) the reply
from a ping returns from the same interface that sent it... so if the
answer comes from T1 ISP, the request was sent from that interface...
try adding a static route including your DSL ISP...
something like
ip route 64.65.0.0 255.225.0.0 64.65.206.162
the example was given using the same sintax as cisco routers (I don't
remember the linux's way... and right now I'm running a windoze box...
I think that 64.65.206.162 is your gateway since that was what I got
with a trace to the address in your message:
C:\WINDOWS>tracert 64.65.206.24 -d
Rastreando a rota para ns.nlenet.net [64.65.206.24]
com no m�ximo 30 saltos:
1 21 ms 22 ms 18 ms 200.221.52.1
2 149 ms 27 ms 114 ms 200.221.31.1
3 147 ms 87 ms 110 ms 200.221.30.65
4 145 ms 136 ms 128 ms 200.221.30.28
5 24 ms 23 ms 26 ms 200.228.240.61
6 86 ms 27 ms 25 ms 200.230.0.154
7 24 ms 23 ms 22 ms 200.230.0.173
8 144 ms 140 ms 140 ms 208.51.239.25
9 156 ms 153 ms 157 ms 64.212.165.133
10 155 ms 153 ms 154 ms 206.132.119.182
11 157 ms 154 ms 154 ms 64.211.1.2
12 162 ms 157 ms 152 ms 64.65.210.162
13 169 ms 171 ms 165 ms 64.65.206.24
The mask 255.255.0.0 is assuming a full class B network... put the mask
that you are using...
hope it help...
orlando
Bob Puff@NLE wrote:
> Hello,
>
> I've got a problem with one of my ISPs that I'm 95% sure is on their end, but I want
>to get some opinions of the experts here, and know what exactly to tell them.
>
> Scenerio:
> Mandrake 7.1 Box with two ethernet cards, one on ISP #1 (DSL), another one on ISP #2
>(T1). Default route is set to go out to the T1.
>
> Situation: When I ping the DSL IP address of my box, the reply gets sent back thru
>the T1. It works everywhere BUT within ISP #1's system.
>
> In other words, if I try to access my box's DSL ip address from another DSL line, it
>fails. When looking at my box, I can see the packet coming in, and the reply going
>out to the T1, but that reply packet never gets back to the other DSL line. It's
>like the DSL provider is filtering the return packet, because it isn't coming from
>the address it was initially sending to.
>
> This holds true for all services - http, mail, etc. The DSL line has NO firewalling
>or NAT on it, so they say. The kicker is that everything works fine on everyone
>else's network, just not the DSL's system!
>
> Also FWIW, if I make the DSL line the default route, all is fine, including within
>the DSL network.
>
> Is there a way for return packets to be handled differently?
>
> How can I explain this to my DSL ISP so that they won't dismiss the problem as a
>"Weird configuration on the user end"?
>
> Bob
>
> P.S. the IP address in question is: 64.65.206.24
