BGP is designed that way. and it relies on TCP .
It is designed based on AS(different authorities) domain.
Read RFC to get your answer why it was designed that way.
Date: Tue, 18 Aug 2009 19:44:54 +0530
From: [email protected]
Subject: Re: [OSL | CCIE_RS] RIP and BGP are application layer protocol
To: [email protected]; [email protected]
Hi Prakash
I know we can use next hop self . but that is not answer to my question..
my question....is why BGP is so made to carry next hop of ebgp in internal AS ?
AS100(C)----e-bgp---AS200(A)----ibgp----AS200(B)
Why BGP was not made so that router A automatically advertise routes to B with
next hop of itself.. as in case of all the other routing protocols ?
and Why BGP is application layer ?
Sincerely,
Taqdir Singh
91-9911709496
Do today what others won't So you can live tomorrow what others can't
From: prakash patel <[email protected]>
To: [email protected]; [email protected]
Sent: Tuesday, 18 August, 2009 7:31:20 PM
Subject: RE: [OSL | CCIE_RS] RIP and BGP are application layer protocol
RIP is the oldest one where some hosts can learn RIP routes from router. ON
host, RIP has to run as application ..am I right?
BGP can change by doing "next-hop-self" so you have that option.
Date: Tue, 18 Aug 2009 19:20:16 +0530
From: [email protected]
To: [email protected]
Subject: [OSL | CCIE_RS] RIP and BGP are application layer protocol
Can any1 please clear , how RIP and BGP are application layer protocols ?
Why BGP is so made to carry the E-BGP next-hop in internal AS ?
Sincerely,
Taqdir Singh
91-9911709496
Do today what others won't So you can live tomorrow what others can't
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