SLow response of WEb Servers via CSM

[cheeseng]

Hi,

I'm experiencing a slow response from my web servers via the CSM. After doing a sniffer trace it's show that the Vserver address does not reponse to the intial sync packet of the client but will only reponse to the second sync packets from the client. Thus the slowness of the reponse time.

May I know why is this so ?

Secondly I also notice the connection failure counter keeps going up for the "real servers" and the "CSM". May I know how does the CSM response to the client for a connection request. Does the CSM resonse immediately to the CLient via the VIP or does the CSM contact the REAL SERVERS first and once the REAL SERVERS resonded only then will it reponse back to the client.

Thanks

[Gilles Dufour]

the CSM will loadbalance the SYN [unless you have a Layer 7 vserver - you can see the level with sho mod csm x vserver detail].

Moreover, a connection failure indicates a server did not respond to a SYN or responded with a RESET.

So, I would sugges to verify the level of your vserver [most probably not l7] and then check your servers.

Make sure they sent traffic back to the CSM and not directly to the client.

Make sure the server is alive.

Regards,

Gilles.