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Bonding of IP tunnels

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Special Forums IP Networking Bonding of IP tunnels
# 1  
Old 07-04-2012
Bonding of IP tunnels
Hello.
Our Company is spreaded over Germany.
There are main offices an branch offices.
These offices are mostly connecte via multiple sdsl.
We build a IPSEC VPN Infrastructure using Aastaro Security Gateways appliances.
It seemed that only one VPN Connetion between to offices could be established.
There is no chance of bundeling multiple Connections to improve the availabilty and speed.
MLPPP is not supported.
I evaluated a solution to establish more than one VPN tunnel between two offices.
Now i directed two ip tunnels through the VPN Tunnels (IPROUTE2).
These IP tunnels are bonded with ifenslave.

If i connect the internal Routers direct to each other all works fine.
A disconnected Link doesn't trouble.
If i connect the internal Routers via the VPN Tunnel it works fine as long as both links are established. If one Link is lost only every fourth data packet will be transmitted.

Has anyone an idea why this happens?
Is there a better Way to implement multiple Tunnels?

Thanks
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LEARN ABOUT DEBIAN

aiccu

AICCU(1)																  AICCU(1)

NAME

       AICCU - Automatic IPv6 Connectivity Configuration Utility

SYNOPSIS

       aiccu  <start|stop|tunnels|test|autotest|license> [ config ]

DESCRIPTION

       AICCU makes it very easy for anybody to get IPv6 connectivity everywhere they want. It uses the TIC (Tunnel Information & Control) protocol
       to request the information needed to setup a tunnel through which the connectivity is created.  AICCU supports the following tunneling pro-
       tocols: - 6in4 static	(RFC 2893) - 6in4 heartbeat (RFC 2893 + draft-massar-v6ops-heartbeat) - tinc	       (http://www.tinc-vpn.org) -
       AYIYA	      (draft-massar-v6ops-ayiya) As AYIYA even works from behind NAT's, thus unless there is a very restrictive firewall in place,
       anybody should be able to get IPv6 connectivity without problems and everywhere they want.

OPTIONS

       start  Starts aiccu service.

       stop   Stops aiccu service.

       tunnels
	      Prints a list of currently available tunnels.

       test   Builds the connection and runs a simple selftest allowing a user to report this back as it should show most obvious problems.

       autotest
	      Decription here

       license
	      Shows the license aiccu is released under.

       config Read the configuration from config file.

SEE ALSO

       The AICCU page <URL:http://www.sixxs.net/tools/aiccu/> at sixxs.

AUTHOR

       AICCU was written by Jeroen Massar with contributions supplied a number of people as mentioned in the Changelog.

								   18 April 2005							  AICCU(1)