From: Coleman, Jason (ColemaJ@netsolve.net)
Date: Mon Dec 23 2002 - 14:24:35 GMT-3
Another important notes about the EIGRP Stub Area is that it helps to
control query boundaries.
Stub areas respond to queries with the "inaccessible" message. Also the
neighboring routers, upon learning that the router is a stub, will no longer
query that router for routes.
EIGRP Stub Area should be non-transit area as well. You can setup a router
that has multiple connections as a Stub area, however I have had problems
when using STUB on a router with more than three PVCs setup.
The typical setup that I have working is only EIGRP STUB CONNECTED for
remote sites that have connections back to 1-3 hub sites. I have seen that
my topology table has reduced in size, thus increasing my free memory and
decreasing convergence time.
Jason Coleman - CCNP, CCDP
Customer Engineer
Network Management Center - Austin
(ph) 512-340-3134
(email) colemaj@netsolve.com
-----Original Message-----
From: OhioHondo [mailto:ohiohondo@columbus.rr.com]
Sent: Saturday, December 21, 2002 10:16 AM
To: Jay Greenberg; Hunt Lee
Cc: ccielab@groupstudy.com
Subject: RE: OSPF Stub VS EIGRP Stub
I believe OSPF stubs aren't allowed connections to external AS's. You can't
have an ASBR in a stub area.
NSSA's exist to get stub area action that allows an ASBR.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Jay Greenberg
Sent: Saturday, December 21, 2002 10:42 AM
To: Hunt Lee
Cc: ccielab@groupstudy.com
Subject: Re: OSPF Stub VS EIGRP Stub
OSPF stub areas won't allow outgoing external LSAs either unless it's a
NSSA.
On Sat, 2002-12-21 at 07:14, Hunt Lee wrote:
> Group,
>
> Just finished reading about EIGRP & OSPF today, and I just want to confirm
my
> understanding (before my brain loses the picture ;-)
>
> For OSPF's Stub Area, it is for stopping External routes (E1 or E2) to get
"into"
> the Stub area.
>
> For OSPF's Totally Stub Area, it is for preventing both External routes &
InterArea
> routes (O IA) from gettting "into" the Stub Area.
>
> NOw for EIGRP Stub, it works the other way:-
>
> For EIGRP Stub & it's 4 optional keywords i.e. Connected, Static, Summary
is for
> preventing the EIGRP Stub from "advertising out" the routes to other EIGRP
neighbors
> (e.g. e.g. if eigrp stub connected is used, only Connected networks are
advertised)
> whereas Receive-only just means this EIGRP Stub router can see all the
other routes
> advertised by its EIGRP neighbor, but it can't "advertise" out anything.
>
> Am I correct?? Any comments are welcome ;-)
>
> Hunt
>
> http://greetings.yahoo.com.au - Yahoo! Greetings
> - Send your seasons greetings online this year!
> .
.
.
.
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