What is the difference between basic IS-IS and OSPF packet types?
IS-IS and OSPF use area packets, but only IS-IS uses sequence number packets.
IS-IS and OSPF use link-state update packets, but only OSPF uses link-state ACK packets.
IS-IS and OSPF use Hello packets, but only OSPF uses DBD packets.
IS-IS and OSPF use link-state update packets, but only IS-IS uses DBD packets.
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