HSRP – Hot Standby Router Protocol

10.1.1.3

00:10:7B:04:88:BB

10.1.1.33

10.1.1.1

00:00:0C:07:AC:01

10.1.1.2

00:10:7B:04:88:CC

default-gw = 10.1.1.1

• Transparent failover of default router

• “Phantom” router created

• One router is active, responds to phantom L2 and L3 addresses

• Others monitor and take over phantom addresses

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