"EXT / GFI REBOLJ Jean-Pierre" <ext.gfi.rebolj@sncf.fr> said: [snip]

ldflag = round_robin

[snip]

the problem is that I see the Authentication request and response then Accounting start on the fisrt back-end server and the accounting stop on the second backend server.

That sounds like round_robin is doing its job.

From the example proxy.conf:

# If there is no ldflag attribute, or it is set to 'fail_over', then # the realms are treated as "fail-over". That is, the first matching # realm is used, unless it is down, in which case the realm "fails # over" to the second matching realm. The process continues until an # active matching realm is found, OR the DEFAULT realm is returned. # # If the ldflag attribute is set to 'round_robin', then all active # realms of the same name are put into a pool internally in the # server, and the proxied requests are evenly divided among the # realms in the pool. For this to work, all realms of the same name # MUST have the same value of their 'ldflag' attributes. Mixing up # different types of load balancing schemes for the same realm will # cause problems. If you are trying to truly load balance, rather than just failover, I don't think this can be done just in the realms config. You should probably read doc/load-balance.txt.

JPR

-- hugh