[f-nsp] ServerIronXL and Layer7 switching issue

[Alex Blauvelt]

We do cookie switching here, so I can help you with that.  I'm not  
sure about cookie-hashing though.

You need to setup server-ids on your real servers that correspond to  
a value in the cookie.  Then on the virtual server you need to define  
the cookie-name to switch on.   I'm not sure about cookie-hashing,  
but I imagine you would need something similar.  You need to tell the  
switch what cookie to work with.

For example:

server virtual vs1
  port http
  port http cookie-name "SomeCookie"
  port http cookie-switching
  bind http rs1 http rs2 http

server real rs1
  port http
  port http server-id 1000

server real rs2
  port http
  port http server-id 1001


Where 1000 and 1001 are values that real servers set in 'SomeCookie'


On Aug 4, 2006, at 2:10 PM, Youssef Ghorbal wrote:

> Hello,
>
> 	I'm trying to set up cookie hashing on a ServerIronXL switch
> ( Version 07.5.00T12)
> 	I followed the foundry documentation but I can't get it work. when I
> activate cookie hashing I have a connection timeout :
>
> 	$ lynx http://vip.mydomain.com
> 	Looking up vip.mydomain.com	
> 	Making HTTP connection to vip.mydomain.com
> 	Alert!: Unable to connect to remote host.
> 	
> 	lynx: Can't access startfile http://vip.mydomain.com/
>
> 	here what I've done :
>
> 	1) allocation of layer7 memory slots
>
> 	slb> conf t
> 	slb> server max-url-switch 80000
> 	slb> server session-limit 200000
> 	slb> write mem
> 	slb> reload
>
> 	2) servers configuration:
>
> 	slb> server real TEST-1 192.168.174.19
>   	slb> port http
>   	slb> port http url "HEAD /verif.html"
> 	slb>!
> 	slb> server real TEST-2 192.168.174.20
>   	slb> port http
>   	slb> port http url "HEAD /verif.html"
>   	slb> !
> 	slb> server virtual TEST 212.19.174.117
> 	slb> predictor round-robin
> 	slb> port http cookie-hashing
>   	slb> bind http TEST-1 http
> 	slb> bind http TEST-2 http
> 	slb>!
>
> 	3) Global configuration:
>
> 	slb> conf t
> 	slb> server l4-check
>
> 	After that (as said in the documentation) everyhing shoud be Okey...
> but it's not my case...
> 	I tested diffrent Layer7 switching technic (Cookie-switching) but I
> have the same result, a "pretty timeout".
> 	
> 	The Switch restart responding after a "no port http cookie-
> hashing"... and traffic is perfecly flowing for the two real  
> servers...
> 	
> What am'I missing ?
>
> Regards,
>
> Youssef GHORABAL
> Netplus Communication.
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