ネットワークエンジニアになろう！

Router-A#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router-A(config)#interface serial2/0
Router-A(config-if)#shutdown
Router-A(config-if)#^Z
Router-A#
Feb 6 22:39:33.594: %OSPF-5-ADJCHG: Process 1, Nbr 1.1.1.104 on Serial2/0 from FULL to DOWN, Neighbor Down: Interface down or detached
Feb 6 22:39:34.206: %SYS-5-CONFIG_I: Configured from console by console
Feb 6 22:39:35.586: %LINK-5-CHANGED: Interface Serial2/0, changed state to administratively down
Feb 6 22:39:36.594: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial2/0, changed state to down

Router-A#show standby
Ethernet0/0 - Group 10
State is Active
1 state change, last state change 00:26:54
Virtual IP address is 192.168.1.1
Active virtual MAC address is 0000.0c07.ac0a
Local virtual MAC address is 0000.0c07.ac0a (v1 default)
Hello time 3 sec, hold time 10 sec
Next hello sent in 2.488 secs
Preemption enabled
Active router is local
Standby router is 192.168.1.103, priority 100 (expires in 7.488 sec)
Priority 105 (configured 105)
IP redundancy name is "hsrp-Et0/0-10" (default)
Router-A#

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.U.U.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Router-A#show 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

1.0.0.0/32 is subnetted, 4 subnets
C 1.1.1.101 is directly connected, Loopback0
O 1.1.1.103 [110/11] via 192.168.1.103, 00:02:57, Ethernet0/0
O 1.1.1.102 [110/11] via 192.168.1.102, 00:02:57, Ethernet0/0
O 1.1.1.104 [110/75] via 192.168.1.103, 00:02:57, Ethernet0/0
[110/75] via 192.168.1.102, 00:02:57, Ethernet0/0
O 192.168.4.0/24 [110/74] via 192.168.1.103, 00:02:57, Ethernet0/0
O 192.168.5.0/24 [110/84] via 192.168.1.103, 00:02:57, Ethernet0/0
[110/84] via 192.168.1.102, 00:02:57, Ethernet0/0
C 192.168.1.0/24 is directly connected, Ethernet0/0
O 192.168.3.0/24 [110/74] via 192.168.1.102, 00:02:57, Ethernet0/0
Router-A#