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Configure DHCP failover. For DHCP failover it is necessary to configure the following parameters: mode, local-address, remote-address, VRRP router belonging VRRP router belonging to a group.
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master(config)# ip dhcp-server pool LAN master(config-dhcp-server)# network 192.0.2.0/24 master(config-dhcp-server)# address-range 192.0.2.10-192.0.2.20 master(config-dhcp-server)# exit master(config)# ip dhcp-server master(config)# ip dhcp-server failover master(config-dhcp-server-failover)# mode active-standby master(config-dhcp-server-failover)# local-address 203.0.113.1 master(config-dhcp-server-failover)# remote-address 203.0.113.2 master(config-dhcp-server-failover)# vrrp-group 1 master(config-dhcp-server-failover)# enable master(config-dhcp-server-failover)# exit |
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backup(config)# interface gigabitethernet 1/0/1 backup(config-if-gi)# security-zone trusted backup(config-if-gi)# ip address 192.0.2.2/24 backup(config-if-gi)# vrrp id 1 backup(config-if-gi)# vrrp ip 192.0.2.1/24 backup(config-if-gi)# vrrp priority 20 backup(config-if-gi)# vrrp group 1 backup(config-if-gi)# vrrp backup(config-if-gi)# exit backup(config)# interface gigabitethernet 1/0/2 backup(config-if-gi)# security-zone trusted backup(config-if-gi)# ip address 203.0.113.2/30 backup(config-if-gi)# exit backup(config)# interface gigabitethernet 1/0/3 backup(config-if-gi)# security-zone trusted backup(config-if-gi)# ip address 198.51.100.2/24 backup(config-if-gi)# vrrp id 3 backup(config-if-gi)# vrrp ip 198.51.100.1/24 backup(config-if-gi)# vrrp priority 10 backup(config-if-gi)# vrrp group 1 backup(config-if-gi)# vrrp backup(config-if-gi)# exit |
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Configure DHCP failover:
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backup(config)# ip dhcp-server pool LAN backup(config-dhcp-server)# network 192.0.2.0/24 backup(config-dhcp-server)# address-range 192.0.2.10-192.0.2.20 backup(config-dhcp-server)# exit backup(config)# ip dhcp-server backup(config)# ip dhcp-server failover backup(config-dhcp-server-failover)# mode active-standby backup(config-dhcp-server-failover)# local-address 203.0.113.2 backup(config-dhcp-server-failover)# remote-address 203.0.113.1 backup(config-dhcp-server-failover)# vrrp-group 1 backup(config-dhcp-server-failover)# enable backup(config-dhcp-server-failover)# exit |
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