dr will elect first
A DR and BDR in a Cisco network stands for Designated Router and Backup Designated Router. These designations are used when working with certain routing protocols such as Open-Shortest Path First (OSPF)
Within a network segment where a router may have several neighbors, such as an Ethernet network, the OSPF routers elect a designated router (DR). Due to the importance of the DR, a backup DR (BDR) is also elected. The DR will centralize communications - all other routers in that segment will only have a full adjacency with the DR and the BDR - and partial adjacencies with all other routers in the segment.
. Elections are required in broadcast multiaccess networks. Elections are sometimes required in NBMA networks.
You are a network engineer for a company. You are assigned the task of interconnecting and creating an addressing scheme for each client's LAN. You must set the OSPF priorities so that the Remote_1 router is the DR and the Remote_2 router is the BDR.
the extensive flooding of LSAs throughout the OSPF areathe excessive adjacencies when the number of routers increases
Designated Router DR election is held before link-state advertisements LSAs are sent. All routers are informed of the problematic route via link-state advertisements LSAs.
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