Tasks
Radio (LFR) reception prior to purchasing the LFR option.
Using Redundant Ethernet Ports
AboutRedundantEthernetPorts
The SyncServer's LAN2 and LAN3 network ports can be bonded together as a single, phys-
ically redundant, Ethernet connection with a single IP address. Bonding can be used to
reduce the Ethernet connection's susceptibility to a single-point failure. For example:
n Having connected LAN2 and LAN3 to separate hubs, the admin bonds the two ports into
a single Ethernet connection.
n LAN2 handles all NTP exchanges (active), while LAN3 remains inactive (backup).
n The device connected to LAN2 goes off-line and LAN2 becomes inactive (backup).
n LAN3 becomes active, handling all NTP exchanges for the Ethernet connection.
n After fixing the problem, the admin logs in to the SyncServer and restores the redundant
Ethernet ports.
Requirements:
n The IP address of the virtual Ethernet port must be valid on the network(s) to which it is
connected.
n The devices to which LAN2 and LAN3 are connected must be able to handle the
switchover correctly. Typically hubs and non-managed switches do just fine, while some
managed/smart switches may need to be configured.
ConfiguringRedundantEthernetPorts
1. Connect LAN2 and LAN3 to the network.
2.
On the NETWORK - Ethernet page, click the EDIT button for LAN2. This displays the LAN2
Configuration window.
3.
For Connection Mode, select Static and complete the IP address related fields.
4.
Select the Redundant checkbox.
5.
Verify that Active is selected.
6.
Click the APPLY button. The LAN2 Configuration window closes. On the NETWORK - Eth-
ernet page, observe the status icons for LAN2 and LAN3, which may include pending
changes (check mark), status unknown (question mark), and bonding (letter "B").
7.
Click the APPLY button at the bottom of the NETWORK - Ethernet page. The status icons
show LAN2 is up and bonded, and LAN3 is bonded.
VerifyingRedundancy
1. PING (on page 201) the IP Address of the bonded ports. The PING statistics should
show 0% lost. This confirms that the IP address exists on the network.
2. Disconnect LAN3 from the network.
3. PING the IP Address of the bonded ports. The PING statistics should show 0% lost. This
confirms that LAN2 is active.
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