From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Fri Sep 12 2003 - 13:07:24 GMT-3
David,
Yes, I misread his question. Alex, note that Distributed
Director is a platform on its own. If you want the router to do it by
itself, use SLB, or as David suggested, redundant DNS entries.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
http://www.InternetworkExpert.com
Toll Free: 877-224-8987
Direct: 708-362-1418 (Outside the US and Canada)
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> David Prall
> Sent: Friday, September 12, 2003 9:55 AM
> To: 'Brian McGahan'; 'Alex Hsieh'; 'CCIE R&S Mailing list'
> Subject: RE: Web server redundancy
>
> Brian,
> Actually Distributed Director is what Alex asked for:
> "How do I config routers(located in HQ) so that upon detecting web
> server(located in HQ) failure,incoming http request is directed to
another
> web server with same content located in branch office?"
>
> Distributed Director configured as an HTTP Agent, or as DNS server
will do
> it perfectly. Configuring as DNS server will allow for redundant
> configuration at multiple sites should the connection fail as well.
>
> David
>
> Brian McGahan <mailto:bmcgahan@internetworkexpert.com> wrote:
> > David,
> >
> > You're thinking of Local Director. Distributed Director is when
> > you have mirrored servers that are in difference geographic
locations.
> > Local Director is when you have mirrored servers that are on the
same
> > local segment. The Local Director feature is now supported in IOS
as
> > 'Server Load Balancing'.
> >
> > As the name implies, server load balancing is used to distribute
> > traffic between multiple servers. Usually these servers would be on
> > the same logical segment (ip subnet), but you can also use NAT with
> > SLB so that the servers can be on separate segments. With the
> > 'Automatic Server Failure Detection' feature, the device running SLB
> > monitors how many TCP sessions fail to connect to a particular
server
> > in the farm. If the failed sessions exceed a certain threshold, the
> > server is declared down and taken out of service.
> >
> > For syntax and more info:
> >
> > 'Configuring Server Load Balancing'
> > http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/product
> > s_configur ation_guide_chapter09186a00800ca75d.html
> >
> >
> >
> > HTH,
> >
> > Brian McGahan, CCIE #8593
> > bmcgahan@internetworkexpert.com
> >
> > Internetwork Expert, Inc.
> > http://www.InternetworkExpert.com
> > Toll Free: 877-224-8987
> > Direct: 708-362-1418 (Outside the US and Canada)
> >
> >
> >> -----Original Message-----
> >> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On
Behalf
> >> Of David Prall Sent: Friday, September 12, 2003 7:55 AM
> >> To: 'Alex Hsieh'; 'CCIE R&S Mailing list'
> >> Subject: RE: Web server redundancy
> >>
> >> nobody@groupstudy.com <mailto:nobody@groupstudy.com> wrote:
> >>> hi gangs:
> >>>
> >>> How do I config routers(located in HQ) so that upon
> >>>
> >>> detecting web server(located in HQ) failure,incoming http
> >>>
> >>> request is directed to another web server with same content
> >>>
> >>> located in branch office?Thanks.
> >>>
> >>> regards
> >>> Alex
> >>>
> >> This is the old Distributed Director platform. This was integrated
> >> into IOS recently on other platforms 2600/3700/7200.
> >>
> >> Here is configuration
> >> http://makeashorterlink.com/?N297521E5
> >>
> >> David
> >>
>
> --
> David C Prall dcp@dcptech.com http://dcp.dcptech.com
>
>
>
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