We have a problem with duplicate sessions on our MikroTik wireless network with FreeRADIUS when OSPF kicks in:

Subscription Analysis for user@isp
2010-01-17 up to 2010-01-25
# logged in session time upload download server terminate cause callerid
1 2010-01-23 22:07:31 15 hours 6.9 MB 83.6 MB 192.168.199.254:513 - 00:0B:6B:DB:A9:96
2 2010-01-22 22:07:30 18 hours 16.2 MB 451.1 MB 192.168.208.1:434 - 00:0B:6B:DB:A9:96
3 2010-01-22 22:07:29 1 days 27.0 MB 0.6 GB 192.168.199.254:434 Session-Timeout 00:0B:6B:DB:A9:96
4 2010-01-21 22:07:27 1 days 4.7 MB 65.0 MB 192.168.199.254:386 Session-Timeout 00:0B:6B:DB:A9:96
5 2010-01-20 22:07:25 1 days 2.9 MB 45.7 MB 192.168.199.254:331 Session-Timeout 00:0B:6B:DB:A9:96
6 2010-01-19 22:07:23 2 hours 171.3 KB 1.4 MB 192.168.208.1:290 - 00:0B:6B:DB:A9:96
7 2010-01-19 22:07:23 1 days 2.9 MB 24.5 MB 192.168.199.254:290 Session-Timeout 00:0B:6B:DB:A9:96
8 2010-01-18 22:07:20 1 days, 1 seconds 3.8 MB 66.2 MB 192.168.199.254:207 Session-Timeout 00:0B:6B:DB:A9:96
9 2010-01-17 22:07:15 1 days 1.5 MB 10.0 MB 192.168.199.254:166 Session-Timeout 00:0B:6B:DB:A9:96
10 2010-01-17 22:07:15 0 seconds 0.0 KB 0.0 KB 192.168.208.1:166 - 00:0B:6B:DB:A9:96

High site 1 is 192.168.199.254 and high site 2 is 192.168.208.1. As you can see it looks like FreeRADIUS counts the extra data on the dropped connection as well.

The only suggestion I have received so far is to use a product called SMRadius (http://www.smradius.org/tiki-index.php?page=Features) that apparently merges duplicate sessions.

But my FreeRadius installation is 7 years old and I don't want to change to another product.

We are using FreeRADIUS Version 1.1.7, for host x86_64-pc-linux-gnu (Ubuntu 8.04 64-bit).

mysql Ver 14.12 Distrib 5.0.51a, for debian-linux-gnu (x86_64) using readline 5.2

Apart from that we have a pretty stock standard default installation.

I have heard about some other people with large MikroTik networks and OSPF and FreeRADIUS that they are having the same problem. I have also described this problem on the MikroTik forum: http://forum.mikrotik.com/viewtopic.php?f=2&t=38620

please assist urgently, this problem is leading to some difficult client service inquiries.

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Eugene van der Merwe