6: Networking
EMG™ Edge Management Gateway User Guide
73
TCP Keepalive Parameters
Gateway
Fail-Over Settings
Start Probes
Number of seconds the EMG unit waits after the last transmission before sending the
first probe to determine whether a TCP session is still alive. The default is 600
seconds (10 minutes).
Number of Probes
Number of probes the EMG sends before closing a session. The default is 5.
Interval
The number of seconds the EMG unit waits between probes. The default is 60
seconds.
Default
IP address of the IPv4 router for this network.
If this has not been set manually, any gateway acquired by DHCP for Eth1 or Eth2
displays.
All network traffic that matches the Eth1 IP address and subnet mask is sent out
Eth1. All network traffic that matches the Eth2 IP address and subnet mask is sent
out Eth 2.
If you set a default gateway, any network traffic that does not match Eth1 or Eth2 is
sent to the default gateway for routing.
DHCP-Acquired
Gateway acquired by DHCP for Eth1 or Eth2. View only.
Precedence
Indicates whether the gateway acquired by DHCP or the default gateway takes
precedence. The default is DHCP Gateway. If the DHCP Gateway is selected and
both Eth1 and Eth2 are configured for DHCP, the EMG unit gives precedence to the
Eth1 gateway.
IPv6 Default
Indicates the IP address of the IPv6 router for this network.
Fail-over Gateway
IP Address
The fail-over gateway is a backup default gateway, used when it is determined
through a fail-over trigger that the primary default gateway is no longer a viable
route. A fail-over event happens when a Ping device reachable via an Ethernet
interface and the default gateway becomes unreachable. Fail-back occurs when the
Ping device becomes reachable again, causing the primary default route to be
restored.
Note:
The fail-over gateway is not supported when DHCP is used.
IP Address to Ping to
Trigger Fail-over
IP address to ping to determine whether to use the fail-over gateway.
Ethernet Port for
Ping
Ethernet port to use for the ping. The options are Eth1, Eth2, and Cell (cellular).
Delay between Pings
Number of seconds between pings. The default is 3.
Number of Failed
Pings
Number of pings that fail before the EMG uses the fail-over gateway. The default is
10.
Fail-over Port
The network interface to use for fail-over. The Fail-over Gateway IP address should
either be accessible via this interface or assigned directly to this interface. Select
Eth2 or Cellular if a cellular modem module is installed.