Does OSPF neighbor require that IP address be in the same network segment?
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Answer: For OSPF neighbor of P2P network type, if encapsulated link protocol is PPP and IP address of different network segment is configured, it can form Full neighbor. If encapsulated link protocol is HDLC or other protocols, it cannot form neighbor. PPP protocol can negotiate opposite IP address. There is opposite route without extra operation. Whether IP address of the neighbor and received interface is in the same network segment or not. |
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or OSPF neighbor of P2P network type, if encapsulated link protocol is PPP and IP address of different network segment is configured, it can form Full neighbor. If encapsulated link protocol is HDLC or other protocols, it cannot form neighbor. PPP protocol can negotiate opposite IP address. nice answer |

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