取消secondary IP 的方法

把 primary 的ip改為同secondary的ip,router會自動把兩個一樣的ip合併為 primary IP

Router#sh run

interface Serial0
ip address 10.250.1.10 255.255.255.252
no ip proxy-arp
encapsulation ppp
no fair-queue
no cdp enable
hold-queue 150 out
!
interface FastEthernet0
ip address 61.63.15.190 255.255.255.192 primary
ip address 61.63.44.190 255.255.255.192 secondary
no ip proxy-arp
speed auto


Router#conf t
Router(config)#int f0
Router(config-if)#ip address 61.63.44.190 255.255.255.192 primary
<ctrl>-<z>
Router#wr


Router#sh run
interface Serial0
ip address 10.250.1.10 255.255.255.252
no ip proxy-arp
encapsulation ppp
no fair-queue
no cdp enable
hold-queue 150 out
!
interface FastEthernet0
ip address 61.63.44.190 255.255.255.192
no ip proxy-arp
speed auto