[LARTC] bonding of 2 lines

[LARTC] bonding of 2 lines

[Laurence vd Krieken]

Dear List,

Another noob question today!

I've been using iproute2 for a long time now to manage bandwidth and
directing traffic over multiple interfaces based on source routing.

I am working on a test-project at the moment, in witch I want to
actually bundle ('trunk') some connections. In the LARTC-manual I found
the chapter about TEQL (see chapter 10). The situation in that example
is too link 2 networks. I need to link a network to 1 remote gateway.

The problem I can't solve on my own is that you can only add physical
devices to the teql0 qdisc. Therefore the following won't work:


                 +--------------+  eth1     +--------+
+----------+
                 |              |===== |        |    eth0  |
|
 'network 1' ----|   BETAGATE   |           |  INET  | ==== |   ZEUS
|
                 |              |===== |        |          |
|
                 +--------------+  eth2     +--------+
+----------+

Zeus is connected to a 1GB/s internet connection. So the bottleneck
won't be the eth0 device on Zeus.

The main goal is that 'network 1' can use the full network speed
(4mbit/s up/down) of both connections. (2x 2mbit SDSL)

At the moment I have eth1 and eth2 of Betagate connected to eth0 of Zeus
trough 2 GRE tunnels. With the following ip's:

eth1 betagate (10.0.1.1) > eth0 zeus (10.0.1.2)
eth2 betagate (10.0.1.4) > eth0 zeus (10.0.1.5)

I could really use your advice on how to be able to get this done.

Thank you in advance,
Lau.
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Re: [LARTC] bonding of 2 lines

[Grant Taylor]

On 07/30/07 09:15, Laurence vd Krieken wrote:
> I am working on a test-project at the moment, in witch I want to 
> actually bundle ('trunk') some connections. In the LARTC-manual I 
> found the chapter about TEQL (see chapter 10). The situation in that 
> example is too link 2 networks. I need to link a network to 1 remote 
> gateway.

I don't think you will get Teql to do what you are wanting it to do.  It 
is my understanding that Teql is meant to load balance across serial links.

> The main goal is that 'network 1' can use the full network speed 
> (4mbit/s up/down) of both connections. (2x 2mbit SDSL)

The first thing that comes to mind is PPP Multi-Linking.  Establish an 
L2TP / PPtP tunnel between your to end nodes and then have PPP bond the 
two tunnels together.  This use to be called "Shotgunning" with dial up 
and T1s.  There is however no reason why it can not be done with VPNs.

The other (preferred) option that comes to mind would be Equal Cost 
Multi Path routing (and the associated config(s) and / or patch(s)). 
Seeing as how you do have two equal cost routes that you want to spread 
traffic across, this should be possible.  However getting it set up 
right will be a bit tricky.



Grant. . . .
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