2.4.3 Auto/Router functionality
The 2 Ethernet ports can be used interchangeably to connect the server to the local network. These 2 ports are 2
switched ports connected to the same logical interface on the TJA670-TJA470 (switch).
This is the normal operating mode for the TJA670- TJA470
when it is connected to an external router (ISP box).
The interface is configurable with a DHCP client or fixed IP
address.
- With a client DHCP (default factory set mode), the server
waits for an IP address coming from a DHCP server
connected to the network (the router). If, after 40 seconds,
no address has been attributed, the server automatically
takes the fallback address: 192.168.0.253 /
255.255.255.0.
- With a static IP address, the server immediately
recognises the settings defined in the “Configuration-
Network” tab in the configurator settings menu:
- Interface IP address
- Sub-network mask
- Default server address
N.B. with a fixed IP address, the module does not automatically
switch to the fallback address if there is an IP address conflict on
the network (other device already using the IP address defined).
To use when a PC is directly connected to the server. This mode
activates the DHCP server built into the module. The 2 ports are
interchangeable and configured with the following parameters:
- Interface IP address: 192.168.0.253
- Sub-network mask: 255.255.255.0
- Default server address: 192.168.0.1
- range of IP addresses that can be attributed by the
TJA670-TJA470 DHCP server: 192.168.0.10 to
192.168.0.50
This mode is a fallback mode in which the server interface is
configured in DHCP client mode.
- If no IP address is attributed by a DHCP server after a
wait of 40 seconds, the server automatically assumes the
following fallback address: 192.168.0.253 /
255.255.255.0.
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