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252 AT-WR4500 Series - IEEE 802.11abgh Outdoor Wireless Routers
RouterOS v3 Configuration and User Guide
This example shows how to configure VRRP on the two routers shown on the diagram. The routers
must have initial configuration: interfaces are enabled, each interface have appropriate IP address, and
routing table is set correctly (it should have at least a default route). SRC-NAT or masquerading should
also be configured before. See the respective manual chapters on how to make this configuration.
Both interfaces should have an IP address
We will assume that the interface the 192.168.1.0/24 network is connected to is named local on both
VRRP routers.
Configuring Master VRRP router
First of all we should create a VRRP instance on this router. We will use the priority of 255 for this
router as it should be preferred router.
[admin@AT-WR4562] ip vrrp> add interface=local priority=255
[admin@AT-WR4562] ip vrrp> print
0 RM name="vrrp1" mtu=1500 mac-address=00:00:5E:00:01:01 arp=enabled
interface=local vrid=1 priority=255 interval=1 preemption-mode=yes
authentication=none password="" on-backup="" on-master=""
[admin@AT-WR4562] ip vrrp>
Next the virtual IP address should be added to this VRRP instance
[admin@ AT-WR4500] ip address> add address=192.168.1.1/24 interface=vrrp1
[admin@M AT-WR4500] ip address> print
[admin@AT-WR4562] ip address> print
Flags: X - disabled, I - invalid, D - dynamic
# ADDRESS NETWORK BROADCAST INTERFACE
0 10.0.0.1/24 10.0.0.0 10.0.0.255 public
1 192.168.1.2/24 192.168.1.0 192.168.1.255 local
2 192.168.1.1/24 192.168.1.0 192.168.1.255 vrrp1
[admin@AT-WR4562] ip addrees>
Now this address should appear in /ip address list:
[admin@AT-WR4562] ip address> print
Flags: X - disabled, I - invalid, D - dynamic
# ADDRESS NETWORK BROADCAST INTERFACE
0 10.0.0.1/24 10.0.0.0 10.0.0.255 public
1 192.168.1.2/24 192.168.1.0 192.168.1.255 local
2 D 192.168.1.1/24 192.168.1.0 192.168.1.255 local
[admin@AT-WR4562] ip address>
Configuring Backup VRRP router
Now we will create VRRP instance with lower priority (we can use the default value of 100), so this
router will back up the preferred one:
[admin@AT-WR4562] ip vrrp> add interface=local
[admin@AT-WR4562] ip vrrp> print
Flags: X - disabled, I - invalid, M - master, B - backup
0 B name="vr1" interface=local vrid=1 priority=100 interval=1
preemption-mode=yes authentication=none password="" on-backup=""
on-master=""
[admin@AT-WR4562] ip vrrp>
Now we should add the same virtual address as was added to the master node:
[admin@AT-WR4562] ip vrrp> address add address=192.168.1.1/24 interface=vrrp1