topic Re: How to control Windows drive-mapping (TCP445) flows filling in Application Networking

How to control Windows drive-mapping (TCP445) flows filling up the WAE connection limit?

Joe Lau — Mon, 30 Apr 2012 03:58:06 GMT

I have a site with users getting data from external partners' shared drives through Windows drive mapping (TCP 445) from time to time. Those connections shouldn't get any optimization benefit as the drives are not on internal network. However, I'm seeing those connections occupying the auto-discovery flows and making the WAE device TFO overload.

Is there any way I can tackle this, apart from denying all the external IP addresses in the WCCP redirect ACL?

Thanks,

Joe

WAE#show auto-discovery list

E: Established, S: Syn, A: Ack, F: Fin, R: Reset

S: sent, r: received, O: Options, P: Passthrough

Src-IP:Port Dst-IP:Port Orig-St Term-St

10.176.121.111:64266 74.42.64.12:445 Sr Sso

10.176.121.244:1565 18.94.7.2:445 Sr Sso

10.176.123.170:2062 41.77.12.7:445 Sr Sso

......

Re: How to control Windows drive-mapping (TCP445) flows filling

rlima — Sat, 05 May 2012 16:11:06 GMT

Hi Joe,

Other than the WCCP ACL which is the best way, you can try to bypass the external CIFS server in the WAAS WAE, you can use the "bypass" in config mode.

Other method is to configure a application optimization policy and add the list of servers in this new application policy and set it as pass-through traffic.

Sent from Cisco Technical Support iPhone App

How to control Windows drive-mapping (TCP445) flows filling up t

Joe Lau — Mon, 07 May 2012 08:08:27 GMT

Thanks Rubens for your suggestions!