4-41To do… Use the command… RemarksConfigure the authentication mode authentication-mode { md5 | simple }RequiredNot configured bydefault.Exit to OSPF view quit —Exit to system view quit —Enter interface view interface interface-type interface-number —Configure the authentication mode(simple authentication) for theinterfaceospf authentication-mode simple [ cipher| plain ] passwordConfigure the authentication mode(MD5 authentication) for theinterfaceospf authentication-mode { hmac-md5 |md5 } key-id [ cipher | plain ] passwordEither is required.Not configured bydefault.Adding the Interface MTU into DD PacketsGenerally, when an interface sends a DD packet, it adds 0 into the Interface MTU field of the DDpacket rather than the interface MTU.Follow these steps to add the interface MTU into DD packets:To do… Use the command… RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —Enable OSPF to add the interfaceMTU into DD packets ospf mtu-enableOptionalNot enabled by default; that is, theinterface fills in a value of 0.Configuring the Maximum Number of External LSAs in LSDBFollow these steps to configure the maximum number of external LSAs in the Link State Database:To do… Use the command… RemarksEnter system view system-view —Enter OSPF view ospf [ process-id | router-id router-id |vpn-instance instance-name ] * —
