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HELLO packet

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- In the Open Shortest Path First (OSPF) communications protocol - which enables network routers to share information with each other, a HELLO packet is a special packet (message) that is sent out periodically from a router to establish and confirm network adjacency relationships. On networks capable of broadcast or multicast transmission, a HELLO packet can be sent from a router simultaneously to other routers to discover neighboring routers.

A BYE packet is a packet transmitted by a multicast participant to signify that the router is leaving the session.

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LAST UPDATED:

11 Jul 2002

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More resources from around the web:

-	Cisco provides a tutorial about OSPF.

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