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floating static の設定（問題）
問題
- RT1 と RT2 に static route を設定し、Loopack 0 同士で通信する場合、通常時はそれぞれの eth0/0 経由で通信できるようにしなさい
RT1#traceroute 192.0.2.2 source loopback 0
Type escape sequence to abort.
Tracing the route to 192.0.2.2
VRF info: (vrf in name/id, vrf out name/id)
1 10.1.1.2 0 msec 1 msec *
RT2#traceroute 192.0.2.1 source loopback 0
Type escape sequence to abort.
Tracing the route to 192.0.2.1
VRF info: (vrf in name/id, vrf out name/id)
1 10.1.1.1 0 msec 1 msec *
RT1#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, m - OMP
n - NAT, Ni - NAT inside, No - NAT outside, Nd - NAT DIA
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
H - NHRP, G - NHRP registered, g - NHRP registration summary
o - ODR, P - periodic downloaded static route, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
& - replicated local route overrides by connected
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.1.1.0/24 is directly connected, Ethernet0/0
L 10.1.1.1/32 is directly connected, Ethernet0/0
C 10.1.2.0/24 is directly connected, Ethernet0/1
L 10.1.2.1/32 is directly connected, Ethernet0/1
192.0.2.0/32 is subnetted, 2 subnets
C 192.0.2.1 is directly connected, Loopback0
S 192.0.2.2 [1/0] via 10.1.1.2, Ethernet0/0
RT2#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, m - OMP
n - NAT, Ni - NAT inside, No - NAT outside, Nd - NAT DIA
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
H - NHRP, G - NHRP registered, g - NHRP registration summary
o - ODR, P - periodic downloaded static route, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
& - replicated local route overrides by connected
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
C 10.1.1.0/24 is directly connected, Ethernet0/0
L 10.1.1.2/32 is directly connected, Ethernet0/0
C 10.1.2.0/24 is directly connected, Ethernet0/1
L 10.1.2.2/32 is directly connected, Ethernet0/1
192.0.2.0/32 is subnetted, 2 subnets
S 192.0.2.1 [1/0] via 10.1.1.1, Ethernet0/0
C 192.0.2.2 is directly connected, Loopback0
- RT1 の eth0/0 と RT2 の eth0/0 間に障害が発生し I/F が down した際、自動で以下の通信経路及び出力に切り替わるようにしなさい。
RT1#traceroute 192.0.2.2 source loopback 0
Type escape sequence to abort.
Tracing the route to 192.0.2.2
VRF info: (vrf in name/id, vrf out name/id)
1 10.1.2.2 1 msec 1 msec *
RT2#traceroute 192.0.2.1 source loopback 0
Type escape sequence to abort.
Tracing the route to 192.0.2.1
VRF info: (vrf in name/id, vrf out name/id)
1 10.1.2.1 1 msec 1 msec *
RT1#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, m - OMP
n - NAT, Ni - NAT inside, No - NAT outside, Nd - NAT DIA
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
H - NHRP, G - NHRP registered, g - NHRP registration summary
o - ODR, P - periodic downloaded static route, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
& - replicated local route overrides by connected
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.1.2.0/24 is directly connected, Ethernet0/1
L 10.1.2.1/32 is directly connected, Ethernet0/1
192.0.2.0/32 is subnetted, 2 subnets
C 192.0.2.1 is directly connected, Loopback0
S 192.0.2.2 [250/0] via 10.1.2.2, Ethernet0/1
RT2#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, m - OMP
n - NAT, Ni - NAT inside, No - NAT outside, Nd - NAT DIA
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
H - NHRP, G - NHRP registered, g - NHRP registration summary
o - ODR, P - periodic downloaded static route, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
& - replicated local route overrides by connected
Gateway of last resort is not set
10.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 10.1.2.0/24 is directly connected, Ethernet0/1
L 10.1.2.2/32 is directly connected, Ethernet0/1
192.0.2.0/32 is subnetted, 2 subnets
S 192.0.2.1 [250/0] via 10.1.2.1, Ethernet0/1
C 192.0.2.2 is directly connected, Loopback0
※EVE-NG で I/F 障害を模擬する場合、以下 Config を投入して RT1, RT2 の eth0/0 を shutdown すること。
RT1(config)#interface ethernet0/0
RT1(config-if)#shutdown
RT2(config)#interface ethernet0/0
RT2(config-if)#shutdown
構成図
初期 Config
RT1
conf t
!
hostname RT1
!
interface Loopback0
no shutdown
ip address 192.0.2.1 255.255.255.255
!
interface Ethernet0/0
no shutdown
ip address 10.1.1.1 255.255.255.0
!
interface Ethernet0/1
no shutdown
ip address 10.1.2.1 255.255.255.0
!
logging console
!
end
RT2
conf t
!
hostname RT2
!
interface Loopback0
no shutdown
ip address 192.0.2.2 255.255.255.255
!
interface Ethernet0/0
no shutdown
ip address 10.1.1.2 255.255.255.0
!
interface Ethernet0/1
no shutdown
ip address 10.1.2.2 255.255.255.0
!
logging console
!
end