From: Annu (annu_roopa@xxxxxxxxx)
Date: Sat Dec 29 2001 - 02:00:29 GMT-3
JP,
What exactly is ur doubt ? Are u missing something
which is causing it to work or not work. Bcoz me and
Chua Parry both have it working.
Here is the complete configs before and after and
internal component has been introduced.The
networks/subnets of 172.16.x.x are external to R10
also.
What i have done is since an internal EIGRP component
is needed for auto-summary instead of introducing it
on R10 i have introduced it on R4.
Without the internal component, router R10 wont
auto-summarize 172.16.x.x to R4 and likewise R4 wont
auto-summarize to R5.So to make R4 auto-summarize to
R5 the internal EIGRP component on R4 will take care.
My Scenario and config with route tables are as
follows:
R5-------------- r4----------------r10--loopbacks
e0 e0 s0 s0
--------------------
r10#show runn
Current configuration:
!
version 12.0
hostname r10
ip subnet-zero
!
interface Loopback1
ip address 172.16.1.1 255.255.255.252
no ip directed-broadcast
!
interface Loopback2
ip address 172.16.1.5 255.255.255.252
no ip directed-broadcast
!
interface Loopback3
ip address 172.16.1.9 255.255.255.252
no ip directed-broadcast
!
interface Serial0
ip address 192.168.1.249 255.255.255.0
no ip directed-broadcast
no ip mroute-cache
no fair-queue
clockrate 64000
router eigrp 1
redistribute connected
network 192.168.1.0
BEFORE SUMMARIZATION
r10#show ip route
172.16.0.0/16 is variably subnetted, 4 subnets, 2
masks
C 172.16.1.8/30 is directly connected, Loopback3
C 172.16.1.4/30 is directly connected, Loopback2
C 172.16.1.0/30 is directly connected, Loopback1
D 10.0.0.0/8 [90/2195456] via 192.168.1.250,
00:04:41, Serial0
C 192.168.1.0/24 is directly connected, Serial0
AFTER SUMMARIZATION
r10#show ip route
172.16.0.0/16 is variably subnetted, 4 subnets, 2
masks
C 172.16.1.8/30 is directly connected, Loopback3
C 172.16.1.4/30 is directly connected, Loopback2
D 172.16.0.0/16 [90/2297856] via 192.168.1.250,
00:04:41, Serial0
C 172.16.1.0/30 is directly connected, Loopback1
D 10.0.0.0/8 [90/2195456] via 192.168.1.250,
00:04:41, Serial0
C 192.168.1.0/24 is directly connected, Serial0
--------------
R5#show runn
Current configuration:
!
version 12.0
hostname R5
ip subnet-zero
no ip domain-lookup
!
interface Ethernet0
ip address 10.1.1.2 255.255.0.0
no ip directed-broadcast
!
router eigrp 1
network 10.0.0.0
AFTER SUMMARIZATION
R5#show ip route
D 172.16.0.0/16 [90/409600] via 10.1.1.1, 00:05:11,
Ethernet0
10.0.0.0/16 is subnetted, 1 subnets
C 10.1.0.0 is directly connected, Ethernet0
D 192.168.1.0/24 [90/2195456] via 10.1.1.1,
00:05:12, Ethernet0
-------------
r4#show runn
Building configuration...
version 12.0
hostname r4
!
!
ip subnet-zero
no ip domain-lookup
interface Loopback10
ip address 172.16.1.129 255.255.255.252
no ip directed-broadcast
!
interface Ethernet0
ip address 10.1.1.1 255.255.0.0
no ip directed-broadcast
!
interface Serial0
ip address 192.168.1.250 255.255.255.0
no ip directed-broadcast
no ip mroute-cache
!
router eigrp 1
passive-interface Loopback10
network 10.0.0.0
network 172.16.0.0
network 192.168.1.0
BEFORE SUMMARIZATION
r4#show ip route
172.16.0.0/30 is subnetted, 4 subnets
D EX 172.16.1.128 [170/2681856] via 192.168.1.249,
00:04:02, Serial0
D EX 172.16.1.8 [170/2297856] via 192.168.1.249,
00:04:02, Serial0
D EX 172.16.1.4 [170/2297856] via 192.168.1.249,
00:04:02, Serial0
D EX 172.16.1.0 [170/2297856] via 192.168.1.249,
00:04:02, Serial0
10.0.0.0/8 is variably subnetted, 2 subnets, 2
masks
C 10.1.0.0/16 is directly connected, Ethernet0
C 192.168.1.0/24 is directly connected, Serial0
AFTER SUMMARIZATION
r4#show ip route
172.16.0.0/16 is variably subnetted, 5 subnets, 2
masks
C 172.16.1.128/30 is directly connected, Loopback10
D EX 172.16.1.8/30 [170/2297856] via 192.168.1.249,
00:05:46, Serial0
D EX 172.16.1.4/30 [170/2297856] via 192.168.1.249,
00:05:46, Serial0
D 172.16.0.0/16 is a summary, 00:05:55, Null0
D EX 172.16.1.0/30 [170/2297856] via 192.168.1.249,
00:05:46, Serial0
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
D 10.0.0.0/8 is a summary, 00:05:55, Null0
C 10.1.0.0/16 is directly connected, Ethernet0
C 192.168.1.0/24 is directly connected, Serial0
---------------
Hope this helps and let me know.What are ur findings ?
Good luck,
Annu
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