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Why is the highest IP address taken as Router ID by default in OSPF?

"Why is the highest IP address taken, is there a reason behind it or it is just something the IETF/CISCO decided on because they had to choose something? Why isn't the smallest IP address taken?&...
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Does OSPF acknowledge DBD packets with an LSAck?

There is no Ack for a DBD packet. They are acked in their own way by setting appropriate sequence number in the next DBD packet. The procedure is described in section 7.2 of RFC 2328. Database ...
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