Designated Router Priority

• Determined by interface priority

• Otherwise by highest router ID

  • (For Cisco IOS, this is address of loopback interface, otherwise highest IP address on router)

144.254.3.5

R2 Router ID = 131.108.3.3

131.108.3.2

131.108.3.3

R1 Router ID = 144.254.3.5

DR

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