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Configuring RIP to Check the Validity of Update Packets
Context
Checking RIP Update packet validity improves network security. Validity check includes zero field check for RIP-1 packets and source address check for RIP Update packets.
- In a RIP-1 packet, the values of some fields must be zero. These fields are zero fields. After zero field check is enabled, the device checks the zero fields in the RIP-1 packets and discards the packets in which the zero field values are not 0.
- This command verifies the source IP address of the received RIP packet. Specifically, the command checks whether the IP address of the interface that sends the packet is in the same network segment as the IP address of the interface that receives the packet. If the addresses are not in the same network segment, the RIP packet will not be processed.