Configure the VRRP daemon

1. Browse the ALOHA WUI.

2. Open the Services tab.

3. Scroll down to VRRP service.

4. Click Setup .

   • Remove the line no autostart if it exists.

   • If a group directive exists and the required network interface is not listed, then append it.

   • Otherwise, add a group directive followed by the interface name.

   The configuration should look like the following:

   group eth0
   track_svc haproxy
   track_mgt sshd wui

5. Click OK.

6. Click Close. The line corresponding to the VRRP daemon now appears in orange with the flag Need restart.

7. Click Restart .

Configure the VRRP instance

1. Browse the ALOHA WUI.

2. Open the Services tab.

3. Scroll down to the network interface you want to configure.

4. Click Setup .

5. Add the following parameters to create a new VRRP instance:

   vrrp inst default id 110	this ID must be unique and depends on your environment
   vrrp inst default garp 30
   vrrp inst default prio 101	ALOHA Master priority (Slave will be 100)
   vrrp inst default address 10.0.32.20	the Virtual IP
   vrrp inst default password aloha	recommended
   vrrp inst default no-address	recommended

   The configuration should look like the following:

   service network eth0
     ip   address 10.0.32.11/24
     ip   route   default 10.0.32.1
     vrrp inst default id 110
     vrrp inst default garp 30
     vrrp inst default prio 101
     vrrp inst default address 10.0.32.20
     vrrp inst default password aloha
     vrrp inst default no-address

6. Click OK.

7. Click Close. The line corresponding to the VRRP daemon now appears in orange with the flag Need restart.

8. Click Restart .

Configure the VRRP daemon

1. Browse the ALOHA WUI.

2. Open the Services tab.

3. Scroll down to VRRP service.

4. Click Setup .

   • Remove the line no autostart if it exists.

   • If a group directive exists and the required network interface is not listed, then append it.

   • Otherwise add a group directive followed by the interface name.

   The configuration should look like the following:

   group eth0
   track_svc haproxy
   track_mgt sshd wui

5. Click OK.

6. Click Close.

   The line corresponding to the VRRP daemon now appears in orange with the flag Need restart.

7. Click Restart .

Configure the VRRP instance

1. Browse the ALOHA WUI.

2. Open the Services tab.

3. Scroll down to the network interface you want to configure.

4. Click Setup .

5. Add the following parameters to create a new VRRP instance:

   vrrp inst default id 110	this ID must be unique and depends on your environment
   vrrp inst default garp 30
   vrrp inst default prio 101	ALOHA Slave priority (Master is 101)
   vrrp inst default address 10.0.32.20	the Virtual IP
   vrrp inst default password aloha	recommended
   vrrp inst default no-address	recommended

   The configuration should look like below:

   service network eth0
     ip   address 10.0.32.11/24
     ip   route   default 10.0.32.1
     vrrp inst default id 110
     vrrp inst default garp 30
     vrrp inst default prio 100
     vrrp inst default address 10.0.32.20
     vrrp inst default password aloha
     vrrp inst default no-address

6. Click OK.

7. Click Close.

   The line corresponding to the VRRP daemon now appears in orange with the flag Need restart.

8. Click Restart .

Detect duplicated IPs

To troubleshoot duplicated IPs, you can use the ARP who-has diagnostic tool.

This tool checks if the MAC address associated with the IP address is the one expected or not:

• If yes, the problem may be on an upper layer

• If not, the MAC address of the server has the duplicated IP

Capture VRRP packets

You can use the capture diagnostic tool for this purpose.

To capture VRRP traffic, use vrrp as <filter> and choose an interface:

tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
14:12:27.936839 00:0c:49:65:47:0e > ... , proto VRRP (112), 10.9.104.253 > 224.0.0.18, ... , vrid 30, prio 35, ... , addrs: ...
14:12:28.250381 00:0c:59:20:c7:f6 > ... , proto VRRP (112), 10.9.104.241 > 224.0.0.18, ... , vrid 166, prio 133, ... , addrs: ...
14:12:28.460930 00:0d:b9:18:b9:74 > ... , proto VRRP (112), 10.9.104.253 > 224.0.0.18, ... , vrid 55, prio 70, ... , addrs: ...
14:12:28.939831 00:0c:49:65:47:0e > ... , proto VRRP (112), 10.9.104.253 > 224.0.0.18, ... , vrid 30, prio 35, ... , addrs: ...
14:12:28.250381 00:0c:59:20:c7:f6 > ... , proto VRRP (112), 10.9.104.241 > 224.0.0.18, ... , vrid 166, prio 133, ... , addrs: ...
5 packets captured
0 packets received by filter
0 packets dropped by kernel

Using the capture diagnostic tool, you can get the following information:

• Source MAC and IP address

• VRID

• VRRP priority