Re: [LARTC] Multiple Internet Interface Issue

Linux Advanced Routing and Traffic Control

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Destination???? Gateway???????? Genmask???????? Flags Metric Ref??? Use Iface

209.26.145.1??? 0.0.0.0???????? 255.255.255.255 UH??? 0????? 0??????? 0 ppp0

24.250.85.128?? 0.0.0.0???????? 255.255.255.128 U???? 0????? 0??????? 0 eth2

192.168.0.0???? 0.0.0.0???????? 255.255.255.0?? U???? 0????? 0??????? 0 eth0

0.0.0.0???????? 24.250.85.129?? 0.0.0.0???????? UG??? 0????? 0??????? 0 eth2 #default route

0.0.0.0???????? 209.26.145.1??? 0.0.0.0???????? UG??? 0????? 0??????? 0 ppp0 #default route

 

These default routes were added automatically when the interfaces are brought up separately. The IP address for ppp0 is 209.26.145.189. If I try to ping 209.26.145.189 from an external machine over the internet, the packets are received, but none are sent. What configuring is needed for data to be sent and received over both interfaces (and retain their source/destination addresses)?

 

Assuming you don't care about sending the data down the shortest path (which would require something like BGP4), configure your kernel for equal cost multipath and then just set both devices as your default route.

 


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