[RADIATOR] Loadbalancing requests from Proxy

[Michael Hulko]

One note after implementing EAPBALANCE.  I am getting this in the logs with a specific user at the moment.

May 17 07:52:09 riptide-2.vm.its.uwo.pri /usr/bin/radiusd[23274]: ProxyAlgorithm HASHBALANCE declines to break up an EAP stream after failover from 129.100.160.133:1645:1646 to 129.100.160.144:1645:1646
May 17 07:52:09 riptide-2.vm.its.uwo.pri /usr/bin/radiusd[23274]: ProxyAlgorithm HASHBALANCE declines to break up an EAP stream after failover from 129.100.160.133:1645:1646 to 129.100.160.144:1645:1646
May 17 07:52:14 riptide-2.vm.its.uwo.pri /usr/bin/radiusd[23274]: ProxyAlgorithm HASHBALANCE declines to break up an EAP stream after failover from 129.100.160.133:1645:1646 to 129.100.160.144:1645:1646

May 17 08:07:39 riptide-2.vm.its.uwo.pri /usr/bin/radiusd[23274]: AuthRADIUS IVEY: Could not find a working host to forward asnowdon at ivey.ca (79) after 20 seconds. Ignoring
May 17 08:07:39 riptide-2.vm.its.uwo.pri /usr/bin/radiusd[23274]: AuthRADIUS IVEY: Could not find a working host to forward asnowdon at ivey.ca (79) after 20 seconds. Ignoring
May 17 08:07:39 riptide-2.vm.its.uwo.pri /usr/bin/radiusd[23274]: AuthRADIUS IVEY: No reply after 20 seconds and 3 retransmissions to 129.100.160.133:1645 for asnowdon at ivey.ca (64)
May 17 08:07:39 riptide-2.vm.its.uwo.pri /usr/bin/radiusd[23274]: AuthRADIUS IVEY: No reply after 20 seconds and 3 retransmissions to 129.100.160.133:1645 for asnowdon at ivey.ca (64)



Here is the config snippet I have included.

<AuthBy EAPBALANCE>
	Log errorLogger
	Log western_syslog
	Identifier IVEY
	Retries 3
	RetryTimeout 5
	FailureBackoffTime 20 
	AuthPort 1645
   	AcctPort 1646
    	Secret xxxxxxxxx
	LocalAddress xxxxxx
 
 	<Host 129.100.160.144>		
 	</Host>
 
	<Host 129.100.160.97>
	</Host>
 
	<Host 129.100.160.133>
	</Host>
   
</AuthBy>

My interpretation of these messages is that the server the EAPBALANCE is trying to send the authentication packets to does not respond in the appropriate amount of time, the EAPBALANCE Hash does not want to break the authentication stream, but never times out long enough to move to another server?
Any input would be helpful.  My thought is to lower the values for Retries etc.


MH


On 2013-05-10, at 11:41 AM, Michael Hulko wrote:

> Thanks for the suggestion.. this seems to alleviate the timeouts that I had noticed previously. (Log file was sent separately).  
> 
> MH
> 
> 
> 
> On 2013-05-10, at 5:26 AM, Heikki Vatiainen wrote:
> 
>> On 05/09/2013 11:09 PM, Michael Hulko wrote:
>>> We have been requested to try and loadbalance requests to a Campus
>>> department with their own Radius (IAS) server for their wireless users.
>> 
>> Hello Michael,
>> 
>> you mentioned campus and wireless LAN which makes me think there is EAP,
>> such as PEAP or TTLS, involved.
>> 
>> If so, you would need to use <AuthBy EAPBALANCE> to make sure the EAP
>> authentication sessions are always handled by the same IAS server.
>> Otherwise you will see failures and timeouts when the IAS servers
>> receive requests they are not expecting.
>> 
>> The Trace 4 log was not included, but I'd first check how it works with
>> EAPBALANCE.
>> 
>> Thanks,
>> Heikki
>> 
>> -- 
>> Heikki Vatiainen <hvn at open.com.au>
>> 
>> Radiator: the most portable, flexible and configurable RADIUS server
>> anywhere. SQL, proxy, DBM, files, LDAP, NIS+, password, NT, Emerald,
>> Platypus, Freeside, TACACS+, PAM, external, Active Directory, EAP, TLS,
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>> NetWare etc.
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> 
> 
> 
> Michael Hulko
> Network Analyst
> 
> Western University Canada
> Network Operations Centre
> Information Technology Services
> 1393 Western Road, SSB 3300CC
> London, Ontario  N6G 1G9
> 
> tel: 519-661-2111 x81390
> e-mail: mihulko at uwo.ca <mailto:mihulko at uwo.ca>
> 
> 
> 
> 
> 
> _______________________________________________
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> radiator at open.com.au
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Michael Hulko
Network Analyst

Western University Canada
Network Operations Centre
Information Technology Services
1393 Western Road, SSB 3300CC
London, Ontario  N6G 1G9

tel: 519-661-2111 x81390
e-mail: mihulko at uwo.ca <mailto:mihulko at uwo.ca>





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