Re: WCCP and WAEs

That sounds like you are making something quite simple look like
something more involved.

"The nature of this services" is just what they use as hash input.
One uses source IP,the other destination IP.

The hash output just decides which WAE is going to get the packet.
(hash maps get recalculated with WCCP registration, but this is just
getting into nitty gritty).

As I said, if you only have one WAE, all this is irrelevant (although
it can be confusing if someone who does not know what's going on, looks
at the configuration, and there's always the possiblity of someone
adding another WAE afterwards).

Oh well, being this a CCIE list, I like facts being discussed, concepts
being presented and sane discussions take place. I don't like recipes
that much :) If you are working on an article on this, why not sharing
the bits on a preview here ? :)

-Carlos

Kambiz Agahian @ 9/04/2010 14:44 -0300 dixit:
> It's due to the nature of these two services and the way they handle
> load distribution.
>
> We're working on an article to explain how to design an optimized WAN
> based on best practices. I'll post it to CCBOOTCAMP forum or blog in
> very near future.
>
>
> --------------------------
> Kambiz Agahian
> CCIE (R&S)
> CCSI, WAASSE, RSSSE
> Technical Instructor
> CCBOOTCAMP - Cisco Learning Solutions Partner (CLSP)
> Email: kagahian_at_ccbootcamp.com
> Toll Free: 877-654-2243
> International: +1-702-968-5100
> Skype: skype:ccbootcamp?call
> FAX: +1-702-446-8012
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> Training And Remote Racks: http://www.ccbootcamp.com
>
>
>
>
>
> -----Original Message-----
> From: Carlos G Mendioroz [mailto:tron_at_huapi.ba.ar]
> Sent: Fri 4/9/2010 9:02 AM
> To: Kambiz Agahian
> Cc: Group Study; Cisco certification
> Subject: Re: WCCP and WAEs
>
> Would you please share why is that ? Or is it sort of black magic ? :)
>
> I would agree that if you have very few IP addresses on either side,
> and you have more than one WAE to choose from, then I would base the
> hash on the side that actually has many IPs, for the sake of having a
> smooth distribution.
>
> Is there any other thing that has to be accounted at design time ?
>
> -Carlos
>
> P.S.
> Original question was if the assignment was related (branch/central).
> Technically it is not, from the above design point of view, it is,
> and the original setting makes sense, because if you have more clients
> than servers, it makes sense to hash on clients, which are LAN side
> at the branch and WAN side at central.
>
>
> Kambiz Agahian @ 9/04/2010 12:19 -0300 dixit:
>> Hi there,
>>
>> This is a design issue. Based on the best practices in small to medium
> size
>> sites 61 goes on the internal interface and 62 is configured on the
> external
>> interface; however IF you have a data center with many servers behind
>> (logically not physically) the WAAS then 62 inside and 61 outside.
>>
>> Does it make sense?
>>
>> HTH,
>>
>>
>> --------------------------
>> Kambiz Agahian
>> CCIE (R&S)
>> CCSI, WAASSE, RSSSE
>> Technical Instructor
>> CCBOOTCAMP - Cisco Learning Solutions Partner (CLSP)
>> Email: kagahian_at_ccbootcamp.com
>> Toll Free: 877-654-2243
>> International: +1-702-968-5100
>> Skype: skype:ccbootcamp?call
>> FAX: +1-702-446-8012
>> YES! We take Cisco Learning Credits!
>> Training And Remote Racks: http://www.ccbootcamp.com
>>
>>
>> -----Original Message-----
>> From: nobody_at_groupstudy.com on behalf of Group Study
>> Sent: Fri 4/9/2010 5:52 AM
>> To: Cisco certification
>> Subject: OT: WCCP and WAEs
>>
>> question about Service 61 and 62.
>>
>> On the remote site, I have 61 on the LAN interface and 62 on the WAN
>> interface. Does it matter that I have 61 on the WAN interface on the
>> Data Center Router and 62 on the LAN? Effectively the opposite of the
>> remote site?
>>
>> I would think it does since 61 is based on Source and 62 on Destination...
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
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>>
>>
>>
>>
>
> --
> Carlos G Mendioroz <tron_at_huapi.ba.ar> LW7 EQI Argentina
>

-- 
Carlos G Mendioroz  <tron_at_huapi.ba.ar>  LW7 EQI  Argentina
Blogs and organic groups at http://www.ccie.net