From: kumara.shunmugam@wipro.com
Date: Wed Aug 03 2005 - 05:35:51 GMT-3
I don't think EIGRP Will not automatically summarize external routes. You need to use interface level eigrp summary command to do this
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Arun Arumuganainar
Sent: Tuesday, August 02, 2005 9:39 AM
To: ccielab@groupstudy.com
Subject: EIGRP auto-summary and External EIGRP Routes
Hi ,
I need a clarification . What is expected behavior on EIGRP auto-summary on
external eigrp routes ??? As per my understanding , EIGRP will always
summarize routes at the state full boundary . Is my understanding correct
???? or Wondering if External EIGRP routes are exception .
My Topology .
R1---------R2
Both R1 and R2 run EIGRP ( AS= 100) . Additionally R2 Runs RIP as well . And
I am redistributing the following RIP routes in to EIGRP AS 100 .
===========================================
R2# sh ip route 200.3.3.0 longer-prefixes
Codes: C - connected, S - static, 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
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
200.3.3.0/27 is subnetted, 6 subnets
R 200.3.3.128 [120/1] via 192.168.30.100, 00:00:12, BVI30
R 200.3.3.160 [120/1] via 192.168.30.100, 00:00:12, BVI30
R 200.3.3.64 [120/1] via 192.168.30.100, 00:00:12, BVI30
R 200.3.3.96 [120/1] via 192.168.30.100, 00:00:12, BVI30
R 200.3.3.0 [120/1] via 192.168.30.100, 00:00:12, BVI30
R 200.3.3.32 [120/1] via 192.168.30.100, 00:00:12, BVI30
===================================
My eigrp configuration at R2 looks like this .
===================================
router eigrp 100
redistribute rip route-map bb3
network 139.10.20.0 0.0.0.255
default-metric 10000 100 200 200 1500
auto-summary
! I have enabled auto summary here
!
ip prefix-list bb3-routes seq 5 permit 200.3.3.0/24 ge 26 le 28
!
!
route-map bb3 permit 10
match ip address prefix-list bb3-routes
!
===================================
At R1 I am not able to see routes summaraised .
===================================
Router1 Trace
==================================
R1#sh ip route eigrp
139.10.0.0/24 is subnetted, 5 subnets
D 139.10.20.0 [90/409600] via 139.10.12.2, 00:13:07, Ethernet3/0
200.3.3.0/27 is subnetted, 6 subnets
D EX 200.3.3.128 [170/307200] via 139.10.12.2, 00:13:07, Ethernet3/0
D EX 200.3.3.160 [170/307200] via 139.10.12.2, 00:13:07, Ethernet3/0
D EX 200.3.3.64 [170/307200] via 139.10.12.2, 00:13:07, Ethernet3/0
D EX 200.3.3.96 [170/307200] via 139.10.12.2, 00:13:07, Ethernet3/0
D EX 200.3.3.0 [170/307200] via 139.10.12.2, 00:13:07, Ethernet3/0
D EX 200.3.3.32 [170/307200] via 139.10.12.2, 00:13:07, Ethernet3/0
Thanks and Regards
Arun
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