LARTC - Feb 2003 - equal cost multipath

Hi again :-)

Ok, I have now learned how to make that work. Learning this via ssh on a dial 
up connection has been a bit of a trial to say the least. I only managed to 
make 5 experiments in that time, because, of course, whenever I was wrong, 
I''d lock myself out...

Simply, I have 3 dsl lines, and I wanted to multipath two of them. One 2MB 
xdsl line was all mine (ppp0) and, for trial purposes, the other came off of 
a switch from an existing NT router. For a week and a half I couldn''t
tell
any diff between my set up and known setups from this list (thanks William et 
al.).

In the end, I had to be *told* the ip of the NT router and then it worked no 
problem: I had been using the wrong ip :-(

I will hard code it for now, because ultimately I will just be grepping for 
pppx''s (when the NT router is replaced by this), but I really wonder
how I
could have discovered it.

I saw these:
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
148.235.145.81  0.0.0.0         255.255.255.255 UH    0      0        0 ppp0
66.181.42.64    0.0.0.0         255.255.255.224 U     0      0        0 eth1
10.0.0.0        0.0.0.0         255.255.255.0   U     0      0        0 eth0
172.36.0.0      0.0.0.0         255.255.0.0     U     0      0        0 eth2
127.0.0.0       0.0.0.0         255.0.0.0       U     0      0        0 lo
0.0.0.0         148.235.145.81  0.0.0.0         UG    0      0        0 ppp0

148.235.145.81 dev ppp0  proto kernel  scope link  src 200.67.64.110 
66.181.42.64/27 dev eth1  scope link 
10.0.0.0/24 dev eth0  scope link 
172.36.0.0/16 dev eth2  scope link 
127.0.0.0/8 dev lo  scope link 
default via 148.235.145.81 dev ppp0


The ip I needed was 66.181.42.68 to get out on eth1. How can I discover that 
without being told?

I''ve typed ip xxx so often that I now understand the wisdom behind
allowing
all those short forms, I''ve read the cref.ps, lartc and stef''s
site etc., but
I must be missing some ls command somewhere...



-- 
Regards, Paul Evans


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Hi folks,

I have the Linux (Slackware 8.1) router and I use it to replace hardware
router ( for example CISCO).
This router is for only external IP addresses: I got 6 IPs from my ISP and
of course to use them I made router on Linux box.

My scheme is:

Internet connection form radio modem
               | eth0
-----------------
|     Linux box    |
-----------------
              | eth1
----------------
|     switch        |
----------------
    |                |
---------  ----------
| FW1  |   | FW2    |
---------  ----------
    |                |
Local network

All network connections use ext IPS except local network.
Everything works just fine.

So my question is can I put two extra network cards to my Linux box and use
the same PC as router for the second
Internet connecton?

Or do I have to use second one Linux box for it?
eth0 and eth1 routing between first ISP IPs and eth2 and eht3 is routing
between second one IPSP IPs?


Thank you in advance

Remus

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