From: Peter van Oene (pvo@usermail.com)
Date: Mon Jan 12 2004 - 23:10:50 GMT-3
At 12:41 PM 1/12/2004, Jaksec, Nick wrote:
>Lets just say I am going to inject 3 externals subnets rather adding them to
>an area via a network command. Is there any difference with creating a
>summary versus a external LSA?
one is a type 3 and the other a 5/7. former comes from abrs and floods
within single areas, while the latter comes from asbrs and floods domain
wide. some more variances exist of course.. are you interested in anything
in particular?
>-----Original Message-----
>From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
>Jonathan Hays
>Sent: Monday, January 12, 2004 12:31 PM
>To: ccielab@groupstudy.com
>Subject: RE: OSPF LSA type 5
>
>
>you wrote:
>
> >I keep reading and hearing that you shouldn't inject LSA
> >type-5 into your
> >OSPF domain if you don't need to. Why not?
>
>= = =
>
>A lot depends on your topology, the size of your OSPF domain, the number
>of exits to the Internet, and so on.
>
>For example, suppose you had a small company network of less than 100
>routers and a single egress point to the Internet. There would be no
>point in injecting external LSAs into OSPF and filling up routing tables
>with unnecessary routes. A single default route pointing to the ASBR
>would suffice.
>
>The answer is, it depends.
>
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