Hi guys,
I have read somewhere that in eigrp auto summary is valid when it passes
mahor networks or something like that and one in one my of basic lab I see
that auto summary is not working.in r3 ospf and eigrp is wroking.I have
redistirbuted ospf into eigrp.R3 and r4 are talking eigrp.and in r4 I can
see all of routes without summarized.
o - ODR, P - periodic downloaded static route
Gateway of last resort is 172.16.123.2 to network 0.0.0.0
3.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 3.3.3.0/24 is directly connected, Loopback3
D 3.0.0.0/8 is a summary, 00:06:17, Null0
172.16.0.0/16 is variably subnetted, 11 subnets, 5 masks
D 172.16.140.0/24
[90/156160] via 172.16.34.40, 00:12:36, FastEthernet2/0
O IA 172.16.62.0/24 [110/128] via 172.16.123.2, 00:09:06, Serial1/0
O IA 172.16.50.1/32 [110/66] via 172.16.123.2, 00:09:06, Serial1/0
D EX 172.16.40.0/24
[170/2560002816] via 172.16.34.4, 00:06:13, FastEthernet2/0
C 172.16.34.0/24 is directly connected, FastEthernet2/0
C 172.16.28.0/22 is directly connected, Loopback30
O IA 172.16.25.0/24 [110/65] via 172.16.123.2, 00:09:06, Serial1/0
O IA 172.16.20.0/24 [110/65] via 172.16.123.2, 00:09:07, Serial1/0
D 172.16.0.0/17 is a summary, 00:07:03, Null0
D 172.16.0.0/16 is a summary, 00:06:19, Null0
C 172.16.123.0/24 is directly connected, Serial1/0
O*E2 0.0.0.0/0 [110/1] via 172.16.123.2, 00:09:07, Serial1/0
R3# router eigrp 1
redistribute ospf 1 metric 1 1 1 1 1
network 3.3.3.3 0.0.0.0
network 172.16.34.3 0.0.0.0
auto-summary
!
router eigrp 2
network 172.16.34.3 0.0.0.0
no auto-summary
!
router ospf 1
log-adjacency-changes
redistribute eigrp 1 subnets
redistribute eigrp 2 subnets
network 3.3.3.3 0.0.0.0 area 30
network 172.16.30.3 0.0.0.0 area 30
network 172.16.123.3 0.0.0.0 area 0
R4#sh ip route
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, su - IS-IS summary, 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 172.16.34.3 to network 3.0.0.0
D* 3.0.0.0/8 [90/156160] via 172.16.34.3, 00:06:55, FastEthernet2/0
172.16.0.0/16 is variably subnetted, 8 subnets, 3 masks
D EX 172.16.62.0/24
[170/2560002816] via 172.16.34.3, 00:06:55, FastEthernet2/0
D EX 172.16.50.1/32
[170/2560002816] via 172.16.34.3, 00:06:55, FastEthernet2/0
C 172.16.40.0/24 is directly connected, Loopback40
C 172.16.34.0/24 is directly connected, FastEthernet2/0
D EX 172.16.28.0/22
[170/2560002816] via 172.16.34.3, 00:06:55, FastEthernet2/0
D EX 172.16.25.0/24
[170/2560002816] via 172.16.34.3, 00:06:55, FastEthernet2/0
D EX 172.16.20.0/24
[170/2560002816] via 172.16.34.3, 00:06:55, FastEthernet2/0
D EX 172.16.123.0/24
[170/2560002816] via 172.16.34.3, 00:06:56, FastEthernet2/0
D*EX 0.0.0.0/0 [170/2560002816] via 172.16.34.3, 00:06:56, FastEthernet2/0
R4#
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