From: Matthew Poole (matthew.poole@blueyonder.co.uk)
Date: Tue Jan 07 2003 - 17:04:35 GMT-3
Hi,
I've just been labbing this and am getting the same result as Ali.
Rt6----------------------Rt7-----------------------------R8
OSPF 1 s0/0 s0/2 EIGRP 1 s1
<------------------------><------------------------------->
Snippets of config:-
Rt7
interface Serial0/2
ip address 10.10.10.1 255.255.255.0
ip summary-address eigrp 1 172.16.0.0 255.255.0.0 5
ip summary-address eigrp 1 10.0.0.0 255.0.0.0 5
clockrate 128000
router eigrp 1
redistribute ospf 1 metric 128000 100 255 1 1500
network 10.0.0.0
no auto-summary
router ospf 1
log-adjacency-changes
network 192.168.10.2 0.0.0.0 area 0
Rt7 routing table:-
R7-Middle#sipr
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter
area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
C 192.168.10.0/24 is directly connected, Serial0/0
172.16.0.0/16 is variably subnetted, 4 subnets, 2 masks
D 172.16.0.0/16 is a summary, 00:09:38, Null0
O 172.16.1.1/32 [110/65] via 192.168.10.1, 00:15:40, Serial0/0
O 172.16.3.1/32 [110/65] via 192.168.10.1, 00:15:40, Serial0/0
O 172.16.2.1/32 [110/65] via 192.168.10.1, 00:15:40, Serial0/0
10.0.0.0/8 is variably subnetted, 5 subnets, 2 masks
C 10.3.1.0/24 is directly connected, Ethernet0/0
D 10.0.0.0/8 is a summary, 00:13:54, Null0
C 10.10.10.0/24 is directly connected, Serial0/2
C 10.2.2.0/24 is directly connected, Loopback3
C 10.1.1.0/24 is directly connected, Loopback2
N.B. the loopbacks and ethernet within 10 network, also summary to null 0.
Rt8 Routing table:
R8-Right#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter
area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
Gateway of last resort is not set
D EX 192.168.10.0/24 [170/2195456] via 10.10.10.1, 00:10:36, Serial1
D 172.16.0.0/16 [90/2195456] via 10.10.10.1, 00:10:36, Serial1
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D 10.0.0.0/8 [90/2297856] via 10.10.10.1, 00:10:37, Serial1
C 10.10.10.0/24 is directly connected, Serial1
It appears from this that Doyle is wrong (again), any ideas anybody??
Mat
----- Original Message -----
From: "Ali Fahmi " <afahmi@plasa.com>
To: <ccielab@groupstudy.com>
Cc: <ccielab@groupstudy.com>
Sent: Tuesday, January 07, 2003 6:08 PM
Subject: Re: need confirmation about "eigrp summary-adddress"
> Hi Todd,
> I disabled auto-summary feature on all routers,
> I tried to summarize my local network (lo0 and lo1) to
> 192.168.0.0/16
> with command ip summary-address eigrp 1 192.168.0.0
> 255.255.0.0
> and it works, I have checked in router B, I saw
> summarized address
> so my conclusion is "ip summary-address " can be used to
> summarize
> local-network,
> I just want to know whether statement in jeff Doyle book
> is correct or not.
> thx
>
> Ali
>
>
> On Tue, 07 Jan 2003 12:50:50 -0500
> Todd Carswell <acarswell@nc.rr.com> wrote:
> >Ali,
> >
> >Do you have "auto-summary" disabled under the EIGRP
> >routing process? If not, then the default behavior of
> >EIGRP is to summarize locally connected subnets. Your
> >loopback IP addresses may appear to be getting summarized
> >by the "ip summary-address" command but the auto-summary
> >feature may be doing it instead.
> >
> >Issue the command "no auto-summary" under the EIGRP
> >process, clear your EIGRP neighbors and re-check your
> >routing tables. Your loopbacks should not be getting
> >summarized anymore. The "ip summary-address" command
> >applies only to non-local networks.
> >Later.
> >
> >Todd
> >
> >
> >
> >Ali Fahmi wrote:
> >
> >>Hi All, refer to Routing TCP IP Vol I Book By Jeff
> >>Doyle, pg 726 ,
> >>3rd paragraph, it says, " the eigrp summarization
> >>applies only to
> >>routes being redistributed inte EIGRP process domain"
> >>
> >>I try in my lab as follow,
> >>
> >>router A --------------------------------Router B
> >>Lo0:192.168.1.0
> >>Lo1:192.168.2.0
> >>
> >>All router above are running EIGRP proc.ID 1
> >>refer to Jeff Doyle Book, I can not summarize internal
> >>routes, but in
> >>my lab, I can do it, anybody can explain?
> >>
> >>thx,
> >>Ali
>
>>==========================================================================
=========
> >>
> >>Pendaftaran Domain Baru Hanya di PlasaCom
>
>>==========================================================================
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> >>
> >>.
>
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