3-17This feature does not apply to RIPv2 packets that have no zero fields.Follow these steps to enable zero field check on incoming RIPv1 messages:To do… Use the command… RemarksEnter system view system-view ––Enter RIP view rip [ process-id ] [ vpn-instancevpn-instance-name ] ––Enable zero field check onreceived RIPv1 messages checkzeroOptionalEnabled by defaultEnabling Source IP Address Check on Incoming RIP UpdatesYou can enable source IP address check on incoming RIP updates.For a message received on an Ethernet interface, RIP compares the source IP address of themessage with the IP address of the interface. If they are not in the same network segment, RIPdiscards the message.Follow these steps to enable source IP address check on incoming RIP updates:To do… Use the command… RemarksEnter system view system-view ––Enter RIP view rip [ process-id ] [ vpn-instancevpn-instance-name ] ––Enable source IP address checkon incoming RIP messages validate-source-addressOptionalEnabled by defaultThe source IP address check feature should be disabled if the RIP neighbor is not directly connected.Configuring RIPv2 Message AuthenticationIn a network requiring high security, you can configure this task to implement RIPv2 message validitycheck and authentication.RIPv2 supports two authentication modes: plain text and MD5.In plain text authentication, the authentication information is sent with the RIP message, whichhowever cannot meet high security needs.Follow these steps to configure RIPv2 message authentication:
