Couple comments/questions inserted
*********** REPLY SEPARATOR ***********
On 11/15/2000 at 2:14 AM Rodgers Moore wrote:
>ebgp multihop has nothing to do with load balancing traffic to and from the
>Internet, but it has everything to do with load balancing the the bgp
>connection and update itself.
I would say it may have something to do with this, but certainly not everything :) It
has everything to do with facilitating peering in situations where a direct connect is
not feasible or optimal.
>If you have two parallel connections to the same router at your ISP and you
>configure two neighbor statements to the ebgp peer router on the connected
>networks you'll transfer the bgp table twice, once on each link. Possibly
>many megs of wasted bandwidth.
Although I think this might work (configuring two routers to peer with each other
twice), I can't imagine a reason for it. Am I missing something?
>If you configure one neighbor statement sourced from a loopback in your
>router going to a loopback interface on the ISP router, you'll have to have
>ebgp-multihop configured too, otherwise it won't work. Then turn off route
>caching and the bgp table will be sent only once and will be load balanced
>accross the two T1's. If one T1 dies, your still in business....
This I'm curious about. I am assuming that we're talking about direct connect peers
using their loop backs. I am unsure about how the traffic would load balance here.
Two static routes might lead to this, but would certainly not prove effective when one
link died. Further, are you saying that a large, single update will actually be
distributed over the two links? The only way I could see this happening would be with
MLPPP over the T's which would limit this situation to equal type links. Am I missing
something here as well?
Thanks!
Pete
>
>Rodgers Moore
>
>""Chuck Larrieu"" <[EMAIL PROTECTED]> wrote in message
>00d401c04eb9$b6c5b360$[EMAIL PROTECTED]">news:00d401c04eb9$b6c5b360$[EMAIL PROTECTED]...
>> EBGP multihop has nothing to do with load balancing.
>>
>> As for using BGP to control incoming traffic from your ISP, I would say
>> there is no simple answer here. You will need to do a lot of reading and
>> thinking.
>>
>> Basssam Halabi, Internet Routing Architectures, is a good place to start.
>> www.nanog.org is another.
>>
>> Best wishes
>>
>> Chuck
>>
>> -----Original Message-----
>> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of
>Andy
>> Sent: Tuesday, November 14, 2000 7:26 PM
>> To: [EMAIL PROTECTED]
>> Subject: BGP load balancing
>>
>> Hi all,
>>
>> I want to know that does command ebgp-multihop provide load balancing over
>> ATM for a router, also how can I configure ebgp to control incoming
>traffic
>> from my ISP
>>
>> Regards
>>
>> Andy
>>
>>
>>
>>
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