WAAS - WCCP loadbalancing

Unanswered Question
Feb 18th, 2010
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Here is a scenario I'm running into and want to know if this is expected:


WAE1 is rebooted and all of the hash buck is assigned to WAE2 to optimize all the traffic.

WAE1 comes back online but receives a different hash buck assignment 128-255 instead of the original 0-127 buckets.


The problem here is all of the original traffic (x.x.x.1-127) going to WAE1 is now being optimized by WAE2. Is this correct in the way the WCCP reassigns hash buckets?


WCCP setup:

Multicast group address 239.10.10.1

61in and 62 out configured on the same LAN facing interface

Egress mehtod is WCCP Negotiated Return

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Zach Seils Thu, 02/25/2010 - 12:27
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  • Cisco Employee,

Yes, this is the current behavior of WCCP.  There is no guarantee that the bucket assignments will be the same when WAE1 comes back online.  That being said, the WCCP flow protection feature should ensure that any connections that were being optimized by WAE2 that are now redirected to WAE1, will be sent directly back to WAE2 for proper handling.


Regards,

Zach

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