| Info |
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For SmartServer 3.4 to 4.1, see Configuring the SmartServer IP Address and Hostname (Release 3.4 to 4.1) For SmartServer 3.3 and prior, see Configure Your SmartServer (Release 3.3 and Prior). |
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The Startup Mode - DHCP with rapid fallback to static is global for eth0 and eth1. Therefore, if you configure the eth0/eth1 to DHCP, then eth1/eth0 is no longer in Startup Mode - DHCP with rapid fallback to static. Changing one to DHCP, automatically sets the other to DHCP, and similarly for Startup Mode. Both LAN and WAN interfaces must be changed so neither is in Startup Mode - DHCP with rapid fallback to static.
If you are only using a single Ethernet port (the LAN or WAN port, not both ports), and you are using a LON U60 interface with a static IP address for eth0 or eth1, then you must set the LAN Interface Gateway field for that port (LAN or WAN). For example, if you are using the LAN port, then set the unused port to Startup Mode (see the example below).
If you are using both the LAN and WAN port, then you need to assign the default a default gateway IP address only when needed. At least one default gateway IP address needs to be used (either assigned by DHCP or by manually adding to a static IP address). Assigning gateway IP addresses to both ports may cause issues with Ethernet communication. Some Ethernet communications will work properly and others may not.
Typically, DHCP automatically assigns a default gateway IP address. All devices on a port that have the same IP subnet as the SmartServer on the same port do not need a gateway IP address. The gateway IP address is only needed if a destination device is on a different IP subnet than one configured for the SmartServer Ethernet port.
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| WAN | LAN | Support |
|---|---|---|
Static Set up default a gateway IP address | Static Do not specify default a gateway IP address (see Note 1) Specify routing paths only if you need to work with devices that are not on the same IP subnet as this port | Supported |
DHCP (see Note 2) | Static Do not specify default gateway IP address (see Note 1) Specify routing paths only if you need to work with devices that are not on the same IP subnet as this port | Supported |
DHCP (see Note 2) | DHCP (see Note 2) | Supported |
| Startup | Startup | NOT supported |
| Startup | DHCP (see Note 2) or Static | NOT supported |
| DHCP (see Note 2) or Static | Startup | NOT supported |
| Note |
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1. If you are using a static IP address for both WAN and LAN, and you configured a default gateway IP address for both, then the SmartServer will use the last default IP gateway IP address as the default gateway IP address. In this case, you may experience communication issues as messages intended for the WAN port may get mistakenly re-directed to the LAN port. 2. In most cases, DHCP will automatically assign a default gateway a gateway IP address. In some cases, you may need to manually add a default gateway IP address when using DHCP. If you experience any problems, contact your IT department. 3. Do not use the same IP subnet for both the WAN and LAN ports. 4. In some cases, you may need to specify static routes. In this case, you may need to re-add the routes when you re-image or restore to factory settings. |
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