L3 redundancy.pdf - the Netgroup at Politecnico di Torino
L3 redundancy.pdf - the Netgroup at Politecnico di Torino
L3 redundancy.pdf - the Netgroup at Politecnico di Torino
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HSRP header: “st<strong>at</strong>e” field (2)• Possible values (cont.) :• 4 = Speak• The router sends perio<strong>di</strong>c Hello messages and is activelyparticip<strong>at</strong>ing in <strong>the</strong> election of <strong>the</strong> active and/or standby router• 8 = Standby• The router is a can<strong>di</strong>d<strong>at</strong>e to become <strong>the</strong> next active router andsends perio<strong>di</strong>c Hello messages• At most one router can be in Standby st<strong>at</strong>e (for each group)• 16 = Active• The router is currently forwar<strong>di</strong>ng packets th<strong>at</strong> are sent to <strong>the</strong>group virtual MAC address• Each group has <strong>at</strong> least one (and only one) router in Active st<strong>at</strong>e17
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