Re: BGP Multi-homing

I suppose that all depends on what your answer about "balance" versus
"share" is. Is 1:1 traffic-share actually a balance between the two?

OER is about optimization not about balancing per se (unless you do
already) PfR is a theorhetical concept, but a nice one. But either
path you take, how well it operates depends on your definitions and
perceptions of the above two terms!

I can give you two paths to go. How often to take either, or what you
take on either is a different story.

Understand your options and build accordingly!

*Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,

JNCIE-M #153, JNCIS-ER, CISSP, et al.

JNCI-M, JNCI-ER

evil_at_ine.com

Internetwork Expert, Inc.

http://www.InternetworkExpert.com

Toll Free: 877-224-8987

Outside US: 775-826-4344

Knowledge is power.

Power corrupts.

Study hard and be Eeeeviiiil......

Johnny Phan wrote:
> I keep seeing the response as there's no way to load balance, only
> load sharing.
>
> Has anyone been able to use OER or PFR successfully ?
>
> ----- Original Message ----- From: "Scott Morris" <smorris_at_ine.com>
> To: "olumayokun fowowe" <olumayokun_at_gmail.com>
> Cc: "Cisco certification" <ccielab_at_groupstudy.com>
> Sent: Monday, July 06, 2009 8:38 AM
> Subject: Re: BGP Multi-homing
>
>
>> For outbound, just use PBR. That way, one of your subnets (source) goes
>> to ISP1 and the other goes towards ISP2. Very simplistic.
>>
>>
>>
>>
>> *Scott Morris*, CCIE/x4/ (R&S/ISP-Dial/Security/Service Provider) #4713,
>>
>> JNCIE-M #153, JNCIS-ER, CISSP, et al.
>>
>> JNCI-M, JNCI-ER
>>
>> evil_at_ine.com
>>
>>
>> Internetwork Expert, Inc.
>>
>> http://www.InternetworkExpert.com
>>
>> Toll Free: 877-224-8987
>>
>> Outside US: 775-826-4344
>>
>>
>> Knowledge is power.
>>
>> Power corrupts.
>>
>> Study hard and be Eeeeviiiil......
>>
>>
>>
>> olumayokun fowowe wrote:
>>> Hello all,
>>>
>>> I am multi-homing to the internet via two ISPs, and both of them are
>>> sending
>>> just default routes to me. I have two blocks of IPs that I am
>>> advertising to
>>> the internet. The challenge I am having is tweeking BGP so that
>>> traffic from
>>> a particular block use ISP1 while traffic from the other block of IP
>>> should
>>> use ISP2. I have been able to tweek inbound traffic from the
>>> internet but I
>>> am having issues with the outbound traffic because of the fact that
>>> Iam just
>>> receiving default routes from the providers. Does anyone have a
>>> solution for
>>> me?
>>>
>>> Thanks,
>>>
>>> Olumayokun
>>>
>>>
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>>
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Received on Tue Jul 07 2009 - 16:57:24 ART