cisco2511 clear line 失败

darking358

clear 好几次才成功
请问是什么原因


FE_2511#show running-config
Building configuration...

Current configuration : 705 bytes
!
version 12.3
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
service udp-small-servers
service tcp-small-servers
!
hostname FE_2511
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$x0L9$sFk7EBhWDXBOg4ifZdTGV1
enable password 123456
!
no aaa new-model
ip subnet-zero
no ip domain lookup
!
!
!
!
interface Ethernet0
ip address 10.2.26.3 255.255.0.0
!
interface Serial0
no ip address
no ip mroute-cache
shutdown
!
interface Serial1
no ip address
shutdown
!
no ip http server
ip classless
!
!         
!
!
line con 0
password fortimail
login
line 1 16
transport input all
line aux 0
transport input all
line vty 0 4
password fortimail
login
!
end