Clarification on DR,BDR selection

Hi, We have some doubt in DR & BDR election among three switches.

Lets COnsider following three router Router R1 Priority P1 Router R2 Priority P2 Router R3 Priority P3

All the three routers are in Multiaccess N/W

Case 1: R2(Priority P2) > R3(Priority P3) > R1(Priority P1)

• Initially Two Routers R1 & R2 comes UP * Then later Router R3 comes UP before wait-timer expiry of R1 & R2.

We are assuming DR, BDR election work as like the flow given in attachment txt file.

Let us know your input on this.

Thanks Senthil

R1(P1) R2(P2) R3(P3)

-Hello(DR=0.0.0.0)--------->

Router R2 compares its priority P2 with P1 and decide who is DR In our case P2 > P1 so DR=R2

----Hello(DR=R2,BDR=R3)---------->

• Is this the way OSPF elects DR & BDR in a multiaccess N/W ?