配置R1interface Tunnel0ip address 10.1.1.1 255.255.255.0no ip redirects no ip next-hop-self eigrp 1no
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配置
R1
interface Tunnel0
ip address 10.1.1.1 255.255.255.0
no ip redirects
no ip next-hop-self eigrp 1
no ip split-horizon eigrp 1
ip nhrp authentication cisco123
ip nhrp map multicast dynamic
ip nhrp network-id 100
tunnel source Serial1/0
tunnel mode gre multipoint
tunnel key 100
R1#show run | s eigrp
no ip next-hop-self eigrp 1
no ip split-horizon eigrp 1
router eigrp 1
network 1.1.1.1 0.0.0.0
network 10.1.1.0 0.0.0.255
R3
interface Tunnel0
ip address 10.1.1.3 255.255.255.0
no ip redirects
ip nhrp authentication cisco123
ip nhrp map 10.1.1.1 12.1.1.1
ip nhrp map multicast 12.1.1.1
ip nhrp network-id 100
ip nhrp nhs 10.1.1.1
tunnel source Serial1/0
tunnel mode gre multipoint
tunnel key 100
R3#show run | s eigrp
router eigrp 1
network 3.3.3.3 0.0.0.0
network 10.1.1.0 0.0.0.255
R4
interface Tunnel0
ip address 10.1.1.4 255.255.255.0
no ip redirects
ip nhrp authentication cisco123
ip nhrp map 10.1.1.1 12.1.1.1
ip nhrp map multicast 12.1.1.1
ip nhrp network-id 100
ip nhrp nhs 10.1.1.1
tunnel source Serial1/0
tunnel mode gre multipoint
tunnel key 100
R4#show run | s eigrp
router eigrp 1
network 4.4.4.4 0.0.0.0
network 10.1.1.0 0.0.0.255
结果
R1#show ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(1)
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 10.1.1.4 Tu0 14 00:00:10 27 1470 0 16
1 10.1.1.3 Tu0 14 00:00:54 30 1470 0 15
R1#show ip route
Codes: L - local, 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, H - NHRP, l - LISP
- replicated route, % - next hop override
Gateway of last resort is 12.1.1.2 to network 0.0.0.0
S 0.0.0.0/0 [1/0] via 12.1.1.2
1.0.0.0/32 is subnetted, 1 subnets
C 1.1.1.1 is directly connected, Loopback0
3.0.0.0/32 is subnetted, 1 subnets
D 3.3.3.3 [90/27008000] via 10.1.1.3, 00:04:44, Tunnel0
4.0.0.0/32 is subnetted, 1 subnets
D 4.4.4.4 [90/27008000] via 10.1.1.4, 00:04:44, Tunnel0
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.1.1.0/24 is directly connected, Tunnel0
L 10.1.1.1/32 is directly connected, Tunnel0
12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 12.1.1.0/24 is directly connected, Serial1/0
L 12.1.1.1/32 is directly connected, Serial1/0
R3#show ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(1)
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 10.1.1.1 Tu0 11 00:01:16 35 1470 0 31
R3#show ip route
Codes: L - local, 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, H - NHRP, l - LISP
- replicated route, % - next hop override
Gateway of last resort is 23.1.1.2 to network 0.0.0.0
S 0.0.0.0/0 [1/0] via 23.1.1.2
1.0.0.0/32 is subnetted, 1 subnets
D 1.1.1.1 [90/27008000] via 10.1.1.1, 00:05:26, Tunnel0
3.0.0.0/32 is subnetted, 1 subnets
C 3.3.3.3 is directly connected, Loopback0
4.0.0.0/32 is subnetted, 1 subnets
D 4.4.4.4 [90/28288000] via 10.1.1.4, 00:05:26, Tunnel0
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.1.1.0/24 is directly connected, Tunnel0
L 10.1.1.3/32 is directly connected, Tunnel0
23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 23.1.1.0/24 is directly connected, Serial1/0
L 23.1.1.3/32 is directly connected, Serial1/0
R4#show ip eigrp neighbors
EIGRP-IPv4 Neighbors for AS(1)
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 10.1.1.1 Tu0 14 00:00:37 41 1470 0 31
R4#show ip route
Codes: L - local, 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, H - NHRP, l - LISP
- replicated route, % - next hop override
Gateway of last resort is 24.1.1.2 to network 0.0.0.0
S* 0.0.0.0/0 [1/0] via 24.1.1.2
1.0.0.0/32 is subnetted, 1 subnets
D 1.1.1.1 [90/27008000] via 10.1.1.1, 00:06:15, Tunnel0
3.0.0.0/32 is subnetted, 1 subnets
D 3.3.3.3 [90/28288000] via 10.1.1.3, 00:06:15, Tunnel0
4.0.0.0/32 is subnetted, 1 subnets
C 4.4.4.4 is directly connected, Loopback0
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.1.1.0/24 is directly connected, Tunnel0
L 10.1.1.4/32 is directly connected, Tunnel0
24.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 24.1.1.0/24 is directly connected, Serial1/0
L 24.1.1.4/32 is directly connected, Serial1/0
验证
R3#traceroute 4.4.4.4 source 3.3.3.3 numeric
Type escape sequence to abort.
Tracing the route to 4.4.4.4
VRF info: (vrf in name/id, vrf out name/id)
1 10.1.1.1 32 msec 22 msec
10.1.1.4 22 msec
R3#traceroute 4.4.4.4 source 3.3.3.3 numeric
Type escape sequence to abort.
Tracing the route to 4.4.4.4
VRF info: (vrf in name/id, vrf out name/id)
* 1 10.1.1.4 23 msec 22 msec**
R3 R4之间“一跳”通信
