From: Godswill Oletu (oletu@inbox.lv)
Date: Sun Sep 18 2005 - 16:04:00 GMT-3
Anis,
If you look at the task very well, you will discover that using "ip
summary-address eigrp 2001 ........." command as you did was not what the
task asked for. The task said
"Configure summary route...............................lo0, lo1 and lo2 as
one route in OSPF....." What you did above was summarizing the route into
eigrp 2001 and not into OSFP.
For OSPF, you have to use the 'summary-address .............." command on
the ASBR. just like the text you referred to suggested.
The reason you saw the 10.1.16.0/22 route on R1, was likely because you did
something else and I quote you :
"...and advertise it to R1 as summary route 10.1.16.0 <http://10.1.16.0>
NM-255.255.252.0"
You see now that, it was not the eigrp summary-address that actually put
your /22 routes into R1's routing table but the advertisement you did above.
So, you did not meet the requirment for the task which require the use the
"summary-address..." command on the ASBR.
HTH
Godswill Oletu
----- Original Message -----
From: "Anis Faruqui" <anisccie@gmail.com>
To: "Cisco certification" <ccielab@groupstudy.com>
Sent: Sunday, September 18, 2005 7:26 AM
Subject: Route Summarization options
> Hi Group,
> Please forgive me for my english and drawing.:)
>
> Yesterday night I did one lab from Solie-I LAB-25 chapter 12 OSPF *OSPF
> Multiple Area Routing, Route Redistribution and
>
> SummarizationPart I,
>
> figure I am simulating it here ,
> OSPFAS-2001-A-0---R1-EIGRP AS-2001-R2---EIGRP-2001-int lo0
> 10.1.16.1/24<http://10.1.16.1/24>
> R2-int lo1 10.1.17.1/24 <http://10.1.17.1/24>
>
> R2-int lo2 10.1.18.1/24 <http://10.1.18.1/24>
>
> LAB Objective :-
>
> configure summary route to advertise all the 3 routes for the int
> lo0,lo1,lo2 as one route into OSPF or Aggregate as one route into OSPF
> Network from router R2 .
> *
>
> To achieve my Goal I have 2 Ways
>
> 1) To summarise these routes from router R2 by giving this command on the
> interface mode* IP summary-address eigrp 2001 10.1.16.0 <http://10.1.16.0>
> 255.255.255.252 <http://255.255.255.252> *and advertise it to R1 as
> summary
> route 10.1.16.0 <http://10.1.16.0> NM-255.255.252.0
>
> 2) To summarise the routes on R1 router in the router OSPF config mode by
> giving the command *summary-address 10.1.16.0 <http://10.1.16.0>
> 255.255.255.252 <http://255.255.255.252>
> *
>
> I chose the First option and configured the summary address on the
> interface
> connecting to router R1 everything went fine when I check the config of
> the
> LAB it was configured by option 2.
>
> So my question to my highly respectfull group member that if we get caught
> in such situation in real LAB that will be for sure which method should I
> select or we all will select.
>
> Regards,
>
> Anis
>
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