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Ammar Lakis
Asked: 2014-12-10 11:39:35 +0800 CST

L2TP loadbalancing

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Due to need to scale, I'm setting a new l2tp server using l2tpns and trying to balance the load between my two l2tp servers using LVS

LVS configuration

ipvsadm -A -u 192.168.10.10:1701 -s sh
ipvsadm -A -u 192.168.10.10:1701 -r 10.10.10.2 -m
ipvsadm -A -u 192.168.10.10:1701 -r 10.10.10.3 -m

Each of the l2tp servers is working as standalone but cannot work behind the LVS, so the problem is with the LVS when it passes the traffic to l2tp servers, and I', getting the following error in l2tpns log

Out of sequence tunnel 2, (0 is not the expected 1)
Duplicate SCCRQ?
Control message (91 bytes): (unacked 1) l-ns 1 l-nr 1 r-ns 0 r-nr 0

Any ideas why does it fail to establish a successful connection with l2tp ?

l2tp

0 Answers