From: David Prall (dcp@dcptech.com)
Date: Fri Sep 12 2003 - 13:20:16 GMT-3
Brian,
No problem. But as of 12.2(4)T it is integrated into normal platforms
2600/3600/3700/7200/7300 on the Plus image set.
Do a search on Distributed Director at http://www.cisco.com/go/fn
David
nobody@groupstudy.com <mailto:nobody@groupstudy.com> wrote:
> 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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