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Well, if we're talking about squid-based appliances.....<br>
<br>
<a class="moz-txt-link-freetext" href="http://wiki.squid-cache.org/ConfigExamples/Intercept/CiscoIOSv15Wccp2">http://wiki.squid-cache.org/ConfigExamples/Intercept/CiscoIOSv15Wccp2</a><br>
<br>
In this article descrived approx. half-year experimental experience
with various LAN topologies, and Cisco devices.<br>
<br>
More common:<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/configuration/guide/ffun_c/fcf018.html">http://www.cisco.com/c/en/us/td/docs/ios/12_2/configfun/configuration/guide/ffun_c/fcf018.html</a><br>
<a class="moz-txt-link-freetext" href="https://supportforums.cisco.com/document/143961/understanding-wccp-redirection-and-assignment-methods-waas">https://supportforums.cisco.com/document/143961/understanding-wccp-redirection-and-assignment-methods-waas</a><br>
<br>
Cisco has not best-in-the-world documentation, yes, but everything
depends on an understanding of network protocols and basic
architecture.<br>
<br>
25.10.2016 0:44, Eliezer Croitoru пишет:<br>
<span style="white-space: pre;">> Well I do agree on most of the
things but it seems that CPU is missing in<br>
> some devices and there for a simpler protocol is better but….
CPU…</span><br>
Yessssss. Router has CPU. :) Not only ASIC. :) PBR is problem,
because of EVERY policy/ACL match handles on CPU.<br>
<br>
This brings us to the other side - the rules / policies must be
carefully optimized - that too few people do, until the router does
not choke on CPU overload.<br>
<br>
<span style="white-space: pre;">> Admins in many cases do not use
their own to understand the complexity but<br>
> from what I do see in the jobs market employers expect the
unexpected.</span><br>
Admins, in most cases, understand nothing and do not bother trying
to grasp and understand more deeply than in the first three-five
seconds. ;)<br>
<br>
About the present, of course, do not tell. :)<br>
<br>
<span style="white-space: pre;">> Or if to be more accurate: They
expect a mage which knows and understand<br>
> every single protocol language and piece of hardware.<br>
><br>
> Can you gather me what ever documentation on the WCCP
protocol?<br>
> I want to see how simple it would be to implement the same
concepts with an<br>
> HTTP\tcp interface.</span><br>
There's really just all. The main thing to understand how the
network works on L2 and L3 in OSI. And a bit network hardware
knowledge.<br>
<br>
<span style="white-space: pre;">><br>
> Eliezer<br>
><br>
> ----<br>
> Eliezer Croitoru <a class="moz-txt-link-rfc2396E" href="http://ngtech.co.il/lmgtfy/"><http://ngtech.co.il/lmgtfy/></a> <br>
> Linux System Administrator<br>
> Mobile: +972-5-28704261<br>
> Email: <a class="moz-txt-link-abbreviated" href="mailto:eliezer@ngtech.co.il">eliezer@ngtech.co.il</a><br>
> <br>
><br>
> From: Yuri Voinov [<a class="moz-txt-link-freetext" href="mailto:yvoinov@gmail.com">mailto:yvoinov@gmail.com</a>] <br>
> Sent: Monday, October 24, 2016 21:07<br>
> To: Eliezer Croitoru <a class="moz-txt-link-rfc2396E" href="mailto:eliezer@ngtech.co.il"><eliezer@ngtech.co.il></a>; 'Garth van
Sittert | BitCo'<br>
> <a class="moz-txt-link-rfc2396E" href="mailto:garth@bitco.co.za"><garth@bitco.co.za></a>; <a class="moz-txt-link-abbreviated" href="mailto:squid-users@lists.squid-cache.org">squid-users@lists.squid-cache.org</a><br>
> Subject: Re: [squid-users] Squid with ASR9001<br>
><br>
><br>
> No.<br>
><br>
> 24.10.2016 23:40, Eliezer Croitoru пишет:<br>
> > And why would you want this<br>
> exactly?<br>
><br>
> > The most simple thing is to use routing policy and
to monitor<br>
> the proxy in<br>
><br>
> > a much higher level then WCCP.<br>
> Based on my personal experience with WCCP (over 6 years). PBR
is VERY<br>
> router's CPU consumpted.<br>
> WCCP - is not (L2, not GRE. GRE performs on CPU, L2 on
control-plane and<br>
> hardware-accelerated).<br>
><br>
> However, using edge router for WCCP is not so good idea by
another reason.<br>
> It breaks good network architecture in most cases. I'm not
CCA, but ever for<br>
> me it's obvious.<br>
><br>
> So, underlying aggregations switches is more appropriate
target for WCCP,<br>
> because of they can be uses L2 WCCP - which is extremely
fast.<br>
><br>
> > For example fetch a web page or<br>
> a statistics page every 10 seconds.<br>
><br>
> > It’s considered pretty right in the industry.<br>
><br>
> > For routers it’s a whole another story but for a
rock solid<br>
> system I do not<br>
><br>
> > believe WCCP is a must.<br>
> Depending of router. Branch router must have. Just take a
look on whole<br>
> Cisco's router's range. Just for interest.<br>
><br>
> > Any juniper and Cisco + others<br>
> these days do not rely on WCCP since it’s<br>
><br>
> > considered a hassle to maintain.<br>
> Cats delicious. You just do not know how to cook them :)<br>
><br>
> WCCP is a very simple protocol. While there may be poorly
documented. There<br>
> is another problem - very few people well versed in
networking technologies,<br>
> few details delves into what makes. The vast majority simply
copy-paste<br>
> configs without a single thought in his head, not bothering
to understand.<br>
><br>
> What is there to maintain? Just configure it once and sit on
the ass<br>
> straight.<br>
><br>
><br>
> > Eliezer<br>
><br>
><br>
><br>
> > ----<br>
><br>
> > Eliezer Croitoru
<a class="moz-txt-link-rfc2396E" href="http://ngtech.co.il/lmgtfy/"><http://ngtech.co.il/lmgtfy/></a><br>
> <a class="moz-txt-link-rfc2396E" href="http://ngtech.co.il/lmgtfy/"><http://ngtech.co.il/lmgtfy/></a> <br>
><br>
> > Linux System Administrator<br>
><br>
> > Mobile: +972-5-28704261<br>
><br>
> > Email: <a class="moz-txt-link-abbreviated" href="mailto:eliezer@ngtech.co.il">eliezer@ngtech.co.il</a>
<a class="moz-txt-link-rfc2396E" href="mailto:eliezer@ngtech.co.il"><mailto:eliezer@ngtech.co.il></a><br>
><br>
><br>
><br>
><br>
><br>
> > From: squid-users<br>
> [<a class="moz-txt-link-freetext" href="mailto:squid-users-bounces@lists.squid-cache.org">mailto:squid-users-bounces@lists.squid-cache.org</a>] On<br>
><br>
> > Behalf Of Yuri<br>
><br>
> > Sent: Monday, October 24, 2016 14:06<br>
><br>
> > To: Garth van Sittert | BitCo
<a class="moz-txt-link-rfc2396E" href="mailto:garth@bitco.co.za"><garth@bitco.co.za></a><br>
> <a class="moz-txt-link-rfc2396E" href="mailto:garth@bitco.co.za"><mailto:garth@bitco.co.za></a> ;<br>
><br>
> > <a class="moz-txt-link-abbreviated" href="mailto:squid-users@lists.squid-cache.org">squid-users@lists.squid-cache.org</a><br>
> <a class="moz-txt-link-rfc2396E" href="mailto:squid-users@lists.squid-cache.org"><mailto:squid-users@lists.squid-cache.org></a><br>
><br>
> > Subject: Re: [squid-users] Squid with ASR9001<br>
><br>
><br>
><br>
> > Ha, it seems ASR9000 really does not support WCCP
exactly.<br>
> You right.<br>
><br>
><br>
><br>
> > WCCP supported on Nexus, on ASR1000... So, your
router only<br>
> can use PBR or<br>
><br>
> > analoquie.<br>
><br>
><br>
><br>
> > The only idea is to buy 3750 as aggregation
switch, config<br>
> WCCP on it and<br>
><br>
> > connect to your ASR by fiber trunk.<br>
><br>
> > 24.10.2016 16:30, Garth van Sittert | BitCo пишет:<br>
><br>
><br>
><br>
> > By Cisco employee - “Correct, there is no WCCP and
no plans<br>
> for it<br>
><br>
> > either... :(”<br>
><br>
><br>
>
<a class="moz-txt-link-freetext" href="https://supportforums.cisco.com/discussion/12227051/ios-xr-and-wccp">https://supportforums.cisco.com/discussion/12227051/ios-xr-and-wccp</a><br>
><br>
><br>
><br>
> > WCCP supported platforms –<br>
><br>
><br>
><br>
><br>
>
<a class="moz-txt-link-freetext" href="https://supportforums.cisco.com/document/133201/wccp-platform-support-overv">https://supportforums.cisco.com/document/133201/wccp-platform-support-overv</a><br>
> i<br>
><br>
> > ew<br>
><br>
><br>
><br>
> > Our ASR9001 has no commands that support wccp
anywhere…<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > Garth van Sittert | Chief Executive Officer <br>
><br>
> > (BSC Physics & Computer Science)<br>
><br>
> > Tel: 087 135 0000 Ext: 201<br>
><br>
> > <a class="moz-txt-link-abbreviated" href="mailto:garth@bitco.co.za">garth@bitco.co.za</a> <a class="moz-txt-link-rfc2396E" href="mailto:garth@bitco.co.za"><mailto:garth@bitco.co.za></a><br>
> <a class="moz-txt-link-rfc2396E" href="mailto:garth@bitco.co.za"><mailto:garth@bitco.co.za></a>
<a class="moz-txt-link-rfc2396E" href="mailto:garth@bitco.co.za"><mailto:garth@bitco.co.za></a> <br>
><br>
> > bitco.co.za <a class="moz-txt-link-rfc2396E" href="http://www.bitco.co.za/"><http://www.bitco.co.za/></a>
<a class="moz-txt-link-rfc2396E" href="http://www.bitco.co.za/"><http://www.bitco.co.za/></a><br>
><br>
><br>
><br>
><br>
> > From: Yuri [<a class="moz-txt-link-freetext" href="mailto:yvoinov@gmail.com">mailto:yvoinov@gmail.com</a>]<br>
><br>
> > Sent: Monday, 24 October 2016 12:12 PM<br>
><br>
> > To: Garth van Sittert | BitCo
<a class="moz-txt-link-rfc2396E" href="mailto:garth@bitco.co.za"><garth@bitco.co.za></a><br>
> <a class="moz-txt-link-rfc2396E" href="mailto:garth@bitco.co.za"><mailto:garth@bitco.co.za></a><br>
><br>
> > <a class="moz-txt-link-rfc2396E" href="mailto:garth@bitco.co.za"><mailto:garth@bitco.co.za></a>
<a class="moz-txt-link-rfc2396E" href="mailto:garth@bitco.co.za"><mailto:garth@bitco.co.za></a> ;<br>
> <a class="moz-txt-link-abbreviated" href="mailto:squid-users@lists.squid-cache.org">squid-users@lists.squid-cache.org</a><br>
> <a class="moz-txt-link-rfc2396E" href="mailto:squid-users@lists.squid-cache.org"><mailto:squid-users@lists.squid-cache.org></a><br>
><br>
> > <a class="moz-txt-link-rfc2396E" href="mailto:squid-users@lists.squid-cache.org"><mailto:squid-users@lists.squid-cache.org></a><br>
> <a class="moz-txt-link-rfc2396E" href="mailto:squid-users@lists.squid-cache.org"><mailto:squid-users@lists.squid-cache.org></a> <br>
><br>
> > Subject: Re: [squid-users] Squid with ASR9001<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > 24.10.2016 13:16, Garth van Sittert | BitCo пишет:<br>
><br>
> > Yes, it looks like all of the ASR9000 range which
makes use<br>
> of IOS XR no<br>
><br>
> > longer supports WCCP.<br>
><br>
> > Please, provide prooflink from Cisco.<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > Policy Based Routing has been replaced by ACL
Based<br>
> Forwarding or ABF.<br>
><br>
> > So? This is therminology difference, if any.<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > From: squid-users<br>
> [<a class="moz-txt-link-freetext" href="mailto:squid-users-bounces@lists.squid-cache.org">mailto:squid-users-bounces@lists.squid-cache.org</a>] On<br>
><br>
> > Behalf Of Yuri Voinov<br>
><br>
> > Sent: Sunday, 23 October 2016 9:35 PM<br>
><br>
> > To: <a class="moz-txt-link-abbreviated" href="mailto:squid-users@lists.squid-cache.org">squid-users@lists.squid-cache.org</a><br>
> <a class="moz-txt-link-rfc2396E" href="mailto:squid-users@lists.squid-cache.org"><mailto:squid-users@lists.squid-cache.org></a><br>
><br>
> > <a class="moz-txt-link-rfc2396E" href="mailto:squid-users@lists.squid-cache.org"><mailto:squid-users@lists.squid-cache.org></a><br>
> <a class="moz-txt-link-rfc2396E" href="mailto:squid-users@lists.squid-cache.org"><mailto:squid-users@lists.squid-cache.org></a> <br>
><br>
> > Subject: Re: [squid-users] Squid with ASR9001<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > 23.10.2016 23:16, Garth van Sittert | BitCo пишет:<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > > Good day all<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > > Has anyone had any experience setting
up Squid<br>
> with any IOS<br>
><br>
> > XR Cisco routers? The Cisco ASR9000 range
doesn’t<br>
> support WCCP<br>
><br>
> > and I cannot find any examples online.<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > Seriously, the entire range?<br>
><br>
><br>
><br>
> > Who said that it does not support WCCP? It is
obligation to<br>
> support, if<br>
><br>
> > only because it is not a home dish soap. That's
when Cisco<br>
> write the<br>
><br>
> > documentation that does not support - and then we
cry.<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > > I have also found quotes regarding PBR
on the<br>
> ASR9000… “With<br>
><br>
> > IOS XR traditional policy-based routing
(PBR) is<br>
> history”<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > It's crazy city a forum talking about? PBR - is a
fundamental<br>
> functionality<br>
><br>
> > for the router. Especially for the router at this
level. I<br>
> somehow difficult<br>
><br>
> > to imagine a company that completely cuts down the
business<br>
> by releasing<br>
><br>
> > incompatible with what device. This is only
possible in the<br>
> OpenSource. But<br>
><br>
> > not in huge IT-business company. AFAIK.<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
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><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > > I plan to use this on our 10Gbps ISP
traffic to<br>
> improve<br>
><br>
> > customer experience…<br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > There is no examples because the solutions of such
a level<br>
> rarely use<br>
><br>
> > Squid. Personally, I do not have a machine to play
and write<br>
> an example to<br>
><br>
> > Squid's wiki. As you know, Christmas is not the
wife of a<br>
> router is present<br>
><br>
> > as trinkets.<br>
><br>
><br>
><br>
><br>
><br>
><br>
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><br>
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><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
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><br>
><br>
><br>
> > > Garth<br>
><br>
><br>
><br>
><br>
><br>
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><br>
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><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
><br>
> > > BitCo Email Footer<br>
><br>
><br>
>
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- -- <br>
Cats - delicious. You just do not know how to cook them.<br>
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