Re: 問題ID： 4527

手元のGNS3（0.8.3.1）にて確認しました。
エミュレート環境は「C3620-JK9O3S-M」にNM-4Tを搭載した状態です。
コンフィグの関連部分は以下の通り
R1:
interface Serial0/0
ip address 192.168.1.1 255.255.255.252
serial restart-delay 0
clock rate 64000

R2:
interface Serial0/0
ip address 192.168.1.2 255.255.255.252
shutdown
serial restart-delay 0

この状態でR2にて
(config-if)# no shut
(config-if)# shut
を実行するとR1のsh ip roの結果は以下のようになりました。
R1#
00:03:12: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to up
R1#sh ip ro
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
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

192.168.1.0/30 is subnetted, 1 subnets
C 192.168.1.0 is directly connected, Serial0/0
R1#
00:04:02: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0, changed state to down
R1#sh ip ro
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
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

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