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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.
- The device checks whether the IP addresses of interfaces that send and receive Update packets are on the same network segment. If not, the switch does not process the packets.
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