On 8/1/10 7:24 AM, Tom Eastep wrote: > On 8/1/10 5:15 AM, Jason Morgan wrote: >> Hi, >> >> I am having problems getting load sharing working. It works for a few >> minutes, then gives up. >> >> I have dual PPPoA lines. ATM is terminated remotely using PPTP. Hence as >> far as linux is concerned it is simply originating >> two ppp devices (ppp0 and ppp1), both with static local IP addresses, but >> with remote gateways that might >> change each time the link comes up. >> >> At first I thought perhaps it was load sharing DNS requests over the wrong >> link. >> Hence after the local DNS cache was old it would re-query but would try to >> contact the DNS peer at >> ISP1 over ISP2's ppp link, which I suspect boths ISPs would block. >> I added configuration to prevent this but this did not help. >> >> The OS is Linux/Ubuntu 10.04 with a custom kernel with >> CONFIG_IP_ROUTE_MULTIPATH_CACHE=n as per the instructions. >> Shorewall is version 4.4.6. >> >> The box has two ethernet devices, eth0 and eth1 with users on both with >> local networks 192.168.4.0/24 and 192.168.7.0/24 respectively. >> >> A single link works fine if I remove the tcrules and providers files.
This turned out to have nothing to do with balanced routes. It was rather solved by setting CLAMPMSS=Yes in shorewall.conf (common issue with PPP links). -Tom -- Tom Eastep \ When I die, I want to go like my Grandfather who Shoreline, \ died peacefully in his sleep. Not screaming like Washington, USA \ all of the passengers in his car http://shorewall.net \________________________________________________
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