3-9Split horizon cannot be disabled on a point-to-point link.Configuring RIP-1 packet zero field checkFollow these steps to configure RIP-1 packet zero field check:To do... Use the command... RemarksEnter system view system-view —Enter RIP view rip —Enable the check of the must be zero fieldin RIP-1 packets checkzero RequiredEnabled by defaultSome fields in a RIP-1 packet must be 0, and they are known as must be zero field. For RIP-1, themust be zero field is checked for incoming packets, and those RIP-1 packets with this field beingnonzero will not be processed.Setting RIP-2 packet authentication modeRIP-2 supports two authentication modes: simple authentication and message digest 5 (MD5)authentication.Simple authentication cannot provide complete security, because the authentication keys sent alongwith packets that are not encrypted. Therefore, simple authentication cannot be applied where highsecurity is required.Follow these steps to set RIP-2 packet authentication mode:To do... Use the command... RemarksEnter system view system-view —Enter interface view interface interface-typeinterface-number —Set RIP-2 packetauthenticationmoderip authentication-mode{ simple password | md5{ rfc2082 key-string key-id |rfc2453 key-string } }RequiredIf you specify to use MD5 authentication, you mustspecify one of the following MD5 authenticationtypes:z rfc2453 (this type supports the packet formatdefined in RFC 2453)z rfc2082 (this type supports the packet formatdefined in RFC 2082)Configuring RIP to unicast RIP packetsFollow these steps to configure RIP to unicast RIP packets:
