sickiness vs session persistence

axfalk · ‎08-27-2009

Wht would be the trade-offs between sickiness and session persistence or are they one and the same?

Thanks..

Gilles Dufour · ‎08-28-2009

stickyness means new connections get sent to the same backend-server based on some critiria like source ip address or a cookie ...

Persistence means one TCP can connection can carry multiple http requests/responses.

So, you can decide to keep the persistence which means keep the connection to the same server for each request/response or you can break the persistence and break the connection into multiple ones on the backend for each request/response.

You usually want to break persistence to handle proxies that use a single connection for multiple clients.

Gilles.

axfalk · ‎10-30-2009

Thanks for your response...

<< or you can break the persistence and break the connection into multiple ones on the backend for each request/response. >>

Would you use persistence-rebalance for the above?

Thanks again..

_Greg

jason.espino · ‎10-30-2009

Hello Greg,

You are corrcect. Persistance-rebalance will treat every HTTP request within the same TCP connection as an independent request allowing the ACE to forward a request to a different layer 7 rule. As Gilles mentioned it would be ideal to break the connection when clients are coming through a proxy. Also, if the client is coming from a network where TCP optimization is enabled.

- Jason

ayazali_ned · ‎11-08-2009

Gilles,

Does CSS 11503 supports stickyness? Actually i want to load balance the chat connections on the basis of src ip & port.

Kindly guide me if there is any way to do this type of load balancing.

Rgds

Ayaz Ali

Gilles Dufour · ‎11-09-2009

CSS11503-2(config-owner-content[gdufour-www])# advanced-balance ?

sip-call-id

wap-msisdn

arrowpoint-cookie

sticky-srcip <===========

sticky-srcip-dstport

cookies

url

cookieurl

ssl

none

Simply select the correct advanced-balance method to achieve the type of stickyness that you need.

Gilles.