Network redundancy - BlueCat Integrity - 9.4.0

Address Manager network redundancy:

• BlueCat recommends enabling and disabling Address Manager network redundancy from Address Manager (as opposed to the Administration Console). For details, refer to Enabling network redundancy on Address Manager.

DNS/DHCP Server network redundancy

• BlueCat recommends enabling and disabling network redundancy on DNS/DHCP Servers from the Add Server and Replace Server pages of Address Manager. However, if you will be using VLAN tagging with bonding interfaces, you can enable and disable bonding using the DNS/DHCP Administration Console. Bonding must be enabled prior to configuring VLAN interfaces.

To view the state of bonding/network redundancy on the appliance, use the Administration Console. From Main Session mode, type show interfaces and press ENTER.

• If bonding is disabled, you won't see bond0 in the list of interfaces:

  Proteus> show interfaces
  eth0:
       IPv4 Addresses
           192.0.2.10/24 (Primary)
       Active = on
  eth1:
       Active = off

• If bonding is enabled, you will see details for bond0 and the bonding mode:

  Proteus> show interfaces
  bond0:
        IPv4 Addresses 
            192.0.2.10/24 (Primary)
        Active = on
        Bond Mode = active-backup
  eth0:
        Active = on
  eth1:
        Active = off

For more detailed information regarding the state of bonding, log in to the server using SSH as root and check the content of the /proc/net/bonding/bond0 file. Refer to the Linux Internet Bonding Driver HOWTO for further specifications.