From: Akber Ali Mirza (akberali.cisco@gmail.com)
Date: Sat Dec 20 2008 - 23:48:40 ARST
John-
Thanks for the valuable input.
Can you tell how do i go ahead for configuring BGP loadbalancing in the
below scenario:-
Internal Network--------->> Internet Router A ------------>>ISP A
(10.1.1.0/24/ Internet Router B-------------->>ISP B
192.168.1.1.0/24)
I want my 10.1.1.0 subnet to pass through only ISP A & 192.168.1.0 subnet to
pass through ISP B.
But If one ISP goes down traffic should be diverted to other traffic with
out diversion.
Also one major reason why i am looking for Loadbalancing with Service
provider is
for example latency towards ISP A is very high , then let me know what needs
to be done form my end on the Internet Routers. IS there any way we can
achieve this with out any changes on BGP.
Any scenario with commands would help me a lot
Cheers!
On Sun, Dec 21, 2008 at 5:38 AM, John <jgarrison1@austin.rr.com> wrote:
> You could set the weight of the routes from both ISP's to the same value,
> but obviously if ISP A has a route that ISP B doesn't than you'll get no
> load sharing for that route
> ----- Original Message ----- From: "Akber Ali Mirza" <
> akberali.cisco@gmail.com>
> To: "John" <jgarrison1@austin.rr.com>
> Cc: <ccielab@groupstudy.com>
> Sent: Saturday, December 20, 2008 4:00 PM
>
> Subject: Re: BGP Loadsharing
>
>
> John -
>>
>> My Questionhere is as follows below .
>>
>> Internal Network 2 subnets----Internet Router ----connected
>> to-------->ISPA
>> & ISP B service
>> Provider.
>> ( ISP BW =2 mb each)
>>
>> How do i perform Loadsharing using BGP on my internet router ?
>> ( How both the links will be utilized by using BGP in this scenario )
>>
>> Cheers!
>>
>>
>> On Sun, Dec 21, 2008 at 2:02 AM, John <jgarrison1@austin.rr.com> wrote:
>>
>> You really don't provide enough information to answer the question. If
>>> your running BGP as your igp you can set one of the appropriate community
>>> attributes on both ingress routers and send-community to your ibgp peers.
>>> As
>>> far as return paths that would depend on what your outside addresses are
>>> and
>>> how their being advertised by your ISP's.
>>>
>>> How does the internal network make routing decisions? You really don't
>>> want router A or B making the load sharing desciscion, so unless you
>>> really
>>> are running BGP as your igp your looking at the wrong solution
>>> ----- Original Message ----- From: "Akber Ali Mirza" <
>>> akberali.cisco@gmail.com>
>>> To: <ccielab@groupstudy.com>
>>> Cc: <akberali.cisco@gmail.com>
>>> Sent: Saturday, December 20, 2008 12:47 PM
>>> Subject: Re: BGP Loadsharing
>>>
>>>
>>> Hi Experts,
>>>
>>>>
>>>> Please provide your valubale help on the below query.
>>>>
>>>> Thanks ,
>>>> Akber.
>>>>
>>>> On Sat, Dec 20, 2008 at 2:33 AM, Akber Ali Mirza
>>>> <akberali.cisco@gmail.com>wrote:
>>>>
>>>> Hi Experts,
>>>>
>>>>>
>>>>> Please help me in configuring BGP Load balancing. { Sorry from
>>>>> Diverting
>>>>> from the CCIE forum }
>>>>>
>>>>>
>>>>> Scenario1:-
>>>>> 192.168.1.0/24 Vlan 10 ------->
>>>>> 10.0.1.0/24 Vlan 20 ------> both vlan levaraging CoreSwitch
>>>>> ----->
>>>>> F/W ---> Internet Router -------> ISP A 2MB
>>>>>
>>>>> ------->
>>>>> ISP B 2MB
>>>>>
>>>>> Scenario2:-
>>>>> 192.168.2.0/24 Vlan 10 ------->
>>>>> 10.0.2.0/24 Vlan 20 ------> both vlan levaraging CoreSwitch
>>>>> ----->
>>>>> F/W ---> Internet Router A -------> ISP A 2MB
>>>>>
>>>>> Internet
>>>>> Router B ------> ISP B 2MB
>>>>>
>>>>> Requirement:- How do i configure Load balancing using BGP for which
>>>>> both
>>>>> my vlans should use Service Provider A& B on a Load Balancced purpose.
>>>>> Please share me the best industry standards as well.
>>>>>
>>>>> Also please explain me how the return traiffc will reach into my
>>>>> network.
>>>>>
>>>>> Thanks in Advance!
>>>>> Akber.
>>>>>
>>>>>
>>>>
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>>
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