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Configures the interface authentication password. Use no ip ospf authentication-key to remove the OSPF password.
ip ospf authentication-key key
no ip ospf authentication-key
Parameter
Description
Possible Values
Default Value
key
The interface authentication password
string (1-8 chars)
read-write
interface:Serial (DS1 PPP L2-L3, DS1 PPP L3, DS1 FR-SUB L2-L3, DS1 FR-SUB L3, USP PPP L2-L3, USP PPP L3), FastEthernet (L2-L3, L3, PPP L2-L3, PPP L3), VLAN (L2-L3, L3), Loopback (L2-L3, L3), Tunnel (L2-L3, L3), Dialer (L2-L3, L3)
To set the authentication password for the VLAN 1 interface as my_pass:
Gxxx-001(if:Vlan 1)# ip ospf authentication-key my_pass
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