Dont understand show ip route summary in CCNP labbook

hitmen

R3#show ip route eigrp
172.31.0.0/24 is subnetted, 1 subnets
D 172.31.1.0 [90/41152000] via 10.1.1.2, 00:49:24, Serial0/1
192.168.200.0/30 is subnetted, 7 subnets
D 192.168.200.0 [90/40640000] via 10.1.1.2, 00:49:29, Serial0/1
D 192.168.200.4 [90/40640000] via 10.1.1.2, 00:49:29, Serial0/1
D 192.168.200.8 [90/40640000] via 10.1.1.2, 00:49:29, Serial0/1
D 192.168.200.12 [90/40640000] via 10.1.1.2, 00:49:29, Serial0/1
D 192.168.200.16 [90/40640000] via 10.1.1.2, 00:49:29, Serial0/1
D 192.168.200.20 [90/40640000] via 10.1.1.2, 00:49:29, Serial0/1
D 192.168.200.24 [90/40640000] via 10.1.1.2, 00:49:29, Serial0/1
192.168.100.0/29 is subnetted, 1 subnets
D 192.168.100.0 [90/41024000] via 10.1.1.2, 00:49:29, Serial0/1






R3#show ip route summa
IP routing table name is Default-IP-Routing-Table(0)
Route Source Networks Subnets Overhead Memory (bytes)
connected 7 3 640 1520
static 0 0 0 0
eigrp 100 0 9 576 1368
internal 5 5860
Total 12 12 1216 8748


Question:
Can anyone answer me how come there is 0 network and 9 subnets for eigrp 100?
This hard to understand.
I understand how they arrive at the figures? Anyway this is lab 2-3 in CCNPv6 route.

networker050184

Look at your 9 EIGRP routes. Are they major networks or subnetworks?

hitmen

I understand there are 9 subnets (7+1+1)
BUT

I dont understand. How do you define a major network?
I thought there are 2 major networks?
Pls Teach me how to count the number of network.

networker050184

Do you know whqat classful networks are? How many do you have in your routing table?

hitmen

Just to confirm: I understand that I have to count classful and supernet networks as major networks. This is by observation.