WAAS 4.1.5F causing DFS issues

[lennyc724]

Hello,

We recently implemented WAAS for a customer of ours, the users are complaining of problems with Microsoft DFS since.

The environment is a single 674 "inline" at the remote site (users) and a single 7341 at the server site. Both running OS 4.1.5F.

Customer states that since WAAS implementation, they are seeing 'backlogs' on their NAS, and response time is unacceptable.

Removing the 674 from the path fixes the issue. Questions we have -- are there any known issues with WAAS and DFS? Do we need to

set the DFS traffic to passthru? Searching for waas and dfs in cisco.com has not produced much info. any assistance/recommendations would be greatly appreciated.

Lenny Capobianco

SCOE Technical Assurance Engineer

AT&T
Rethink Possible

Global Customer Solutions, Solutions Center of Excellence (SCOE)

(813) 402-5246

lennyc@att.com

[Jan Rockstedt]

Hi,

Are they using Access-based Enumeration (ABE) on the file share?

If yes you need to use dynamic shares in the WAE.

Regards Jan

[pevaneyn]

Hello Lenny,

Slowness when talking to a NAS can be the result of the NAS not having Level 2 OPlocks enabled.

DFS and WAAS are fully compatible, the only gotcha is when doing prepositioning: there you need to give the 'real' location of the data, not the DFS view. However things like ABE can cause problems.

Best regards, Peter