That makes perfect sense, and is a good explanation imho
Symon
-------------------
> Administrative Distance and the longest-match rule apply to two
separate
> processes. Remember, there is a route installation process and a
route
> lookup process. AD matters only during the installation process.
>
> When a router receives an update for the identical route from more
than
> one routing protocol, it uses AD to determine which to actually
place
> into the routing table. After this point, AD is irrelevant.
>
> When the router is choosing a route for a specific destination then
the
> longest-match rule comes into play and the router will *always*
choose
> the route associated with the longest matching prefix in the table.
>
> I hope that makes sense. I haven't finished my first cup of coffee
so
> I can't be held responsible for my ramblings. If that doesn't make
> sense, let me know and I'll rephrase it.
>
> Regards,
> John
>
> >>> "Wright, Jeremy" 8/22/01 8:17:08 AM >>>
> So for example, if you have the following 10.1.1.0/28 OSPF
> 10.1.0.0/24 EIGRP
> 10.1.1.0/26 Static
> Which route will be chosen? Thanks for the help.
>
> -----Original Message-----
> From: McCallum, Robert
> [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, August 22, 2001 8:32 AM
> To: 'Wright, Jeremy'; [EMAIL PROTECTED]
> Subject: RE: Quick CCIE Written Question
> [7:16797]
>
> In a nut shell yes and no. i.e.
>
> Admin distance is the winner by means that the lower
> the
> admin distance the better, so a route learned from EIGRP will get
into
> the
> routing table despite having a longer match route which was learned
> from say
> OSPF. BUT if you have two routes learned from the same admin
distance
> then
> the longest
> match ALWAYS wins.
>
> Basically once the route is in the routing table then
> the
> longest match is the outmost winner.
>
> -----Original Message-----
> From: Wright, Jeremy [mailto:[EMAIL PROTECTED]]
> Sent: 22 August 2001 14:19
> To: [EMAIL PROTECTED]
> Subject: Quick CCIE Written Question [7:16797]
>
>
> Does the longest match rule always override
> administrative
> distance??
> [EMAIL PROTECTED]
[EMAIL PROTECTED]
>
Cheers,
Symon
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=16816&t=16797
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