Now check this out! I have changed the bandwidth from default 10000 to 1000. Due to the change in the K value there is change in the topology and the route table.
R6(config)#do sh run inter e0/1
Building configuration...
Current configuration : 96 bytes
!
interface Ethernet0/1
bandwidth 1000
ip address 192.168.7.1 255.255.255.0
half-duplex
end
R6(config)#do 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 not set
D 192.168.4.0/24 [90/358400] via 192.168.1.4, 00:07:07, Ethernet0/0
[90/358400] via 192.168.1.2, 00:07:07, Ethernet0/0
[90/358400] via 192.168.1.1, 00:07:07, Ethernet0/0
D 192.168.5.0/24 [90/486400] via 192.168.1.4, 00:07:06, Ethernet0/0
[90/486400] via 192.168.1.2, 00:07:06, Ethernet0/0
[90/486400] via 192.168.1.1, 00:07:06, Ethernet0/0
D 192.168.6.0/24 [90/486400] via 192.168.1.4, 00:07:06, Ethernet0/0
[90/486400] via 192.168.1.2, 00:07:08, Ethernet0/0
[90/486400] via 192.168.1.1, 00:07:08, Ethernet0/0
C 192.168.7.0/24 is directly connected, Ethernet0/1
C 192.168.1.0/24 is directly connected, Ethernet0/0
D 192.168.2.0/24 [90/307200] via 192.168.1.4, 00:28:20, Ethernet0/0
[90/307200] via 192.168.1.2, 00:28:20, Ethernet0/0
[90/307200] via 192.168.1.1, 00:28:20, Ethernet0/0
D 192.168.3.0/24 [90/332800] via 192.168.1.4, 00:07:12, Ethernet0/0
[90/332800] via 192.168.1.2, 00:07:12, Ethernet0/0
[90/332800] via 192.168.1.1, 00:07:12, Ethernet0/0
R6(config)#do sh ip eigrp top
IP-EIGRP Topology Table for AS(10)/ID(192.168.1.3)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status
P 192.168.1.0/24, 1 successors, FD is 281600
via Connected, Ethernet0/0
P 192.168.2.0/24, 3 successors, FD is 307200
via 192.168.1.1 (307200/281600), Ethernet0/0
via 192.168.1.2 (307200/281600), Ethernet0/0, serno 76
via 192.168.1.4 (307200/281600), Ethernet0/0, serno 57
P 192.168.3.0/24, 3 successors, FD is 332800
via 192.168.1.1 (332800/307200), Ethernet0/0
via 192.168.1.2 (332800/307200), Ethernet0/0, serno 77
via 192.168.1.4 (332800/307200), Ethernet0/0, serno 89
via 192.168.7.2 (2636800/307200), Ethernet0/1
P 192.168.4.0/24, 3 successors, FD is 358400
via 192.168.1.1 (358400/332800), Ethernet0/0
via 192.168.1.2 (358400/332800), Ethernet0/0
via 192.168.1.4 (358400/332800), Ethernet0/0
via 192.168.7.2 (2611200/281600), Ethernet0/1
P 192.168.5.0/24, 3 successors, FD is 486400
via 192.168.1.1 (486400/460800), Ethernet0/0
via 192.168.1.2 (486400/460800), Ethernet0/0
via 192.168.1.4 (486400/460800), Ethernet0/0
via 192.168.7.2 (2713600/128256), Ethernet0/1
P 192.168.6.0/24, 3 successors, FD is 486400
via 192.168.1.1 (486400/460800), Ethernet0/0
via 192.168.1.2 (486400/460800), Ethernet0/0
via 192.168.1.4 (486400/460800), Ethernet0/0
via 192.168.7.2 (2713600/128256), Ethernet0/1
P 192.168.7.0/24, 1 successors, FD is 2585600
via Connected, Ethernet0/1
via 192.168.1.1 (384000/358400), Ethernet0/0
via 192.168.1.4 (384000/358400), Ethernet0/0
via 192.168.1.2 (384000/358400), Ethernet0/0
Why
1> Changing the bandwidth caused the change in the output of the show ip route?
2> Why the best routes are via 192.168.1.1, 192.168.1.2 and 192.168.1.4 and why not 192.168.7.2 any more?
3> Is there any other parameter that can be changed to make this work alike?
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