Identifying which WAE in a farm recieves a flow when using mask assignment

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Sep 30th, 2010
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Hi,


I wonder if someone can help me.  I need to work out which of the WAEs in my farm will receive a particular flow.  I can do this for the locations where I am using hash assignment, but how do I get this information for a location where I am using mask assignment?


Thanks

Claire

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Kenneth Lanzillo Thu, 09/30/2010 - 05:21
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Here's a form you can use fo calculate to which bucket a particular IP would be assigned:



WCCP Mask (HEX)HEXFirst OctetSecond OctetThird OctetFourth OctetNumber of Buckets
0x7F0x0000007F00000000000000000000000001111111128
IP to Calculate (Opt.) IP assigned to Bucket
192.168.0.110xC0A8000B1100000010101000000000000000101111


Enter your WCCP Mask choice and map out the binary mask value and enter an IP  address to be evaluated against the mask. Anding the values yields the bucket assignment. Since WAE WCCP  Bucket assignment varies, you will need to compare this to the  output of "show ip wccp [61 or 62] detail" on your router/switch, or  "show wccp mask tcp-pro" on your WAE to determine the bucket to WAE  mapping.


Your Cisco Account team can provide you with an excel spreadsheet that will perform these calculations automatically.


-ken

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