TCP/IP Interface fields

For each Ethernet port on the connected platform, the TCP/IP Configuration platform view provides an expandable Interface n section.

Some JACE models have two Ethernet ports: LAN1 and LAN2, which are Interface 1 (en0) and Interface 2 (en1). Other JACE models may have a single Ethernet LAN port, Interface 1 (en0).

A JACE-700 can have an optional “WiFi” adapter installed. It appears in the TCP/IP Configuration view as yet a third Interface 3 (bc0).

Figure 100. TCP/IP Interface fields, top properties

As shown in Figure 100, each Interface has the following properties at the top:

ID

A read-only OS identifier for the hardware interface, such as “en0” if a QNX-based platform, or if a Windows-based platform, either a 128-bit GUID (globally unique identifier) or a Windows network connection name, such as “Local Area Connection 2”.
Description

A read-only text string such as “Onboard Ethernet Adapter en0” for a QNX-based host, or “Intel(R) PRO/100 VE Network Connection” for a Win32-based host, describing a NIC model.
Physical Address

(Value is available only if platform is running AX-3.5 or later) The unique 48-bit MAC address of the Ethernet adapter, in six two-hexadecimal digits. For example, for a JACE: 00:01:F0:80:13:E6
Adapter Enabled

Checkbox to specify whether the Ethernet port is usable. On Windows-based hosts, this is read-only.

Below the properties above, each Interface has two separate tabs, as follows (each with properties):

IPv4 Settings

Figure 101. IPv4 tab for Interface of QNX-based JACE, in platform TCP/IP Configuration view

The following properties are on the IPv4 Settings tab of the selected Interface:

DHCPv4
Only ONE adapter of any QNX-based JACE may have DHCP enabled.

A checkbox to specify DHCP (Dynamic Host Configuration Protocol) instead of static IP addressing. Successful use requires a DHCP server installed on your network. If enabled, other interface fields such as IP Address and Subnet Mask become read-only, as these are assigned by the DHCP server after the platform reboots.
In general (for stability), static IP addressing is recommended over DHCP. If configuring for DHCP it is recommended that you reserve a specific, fixed IP address for this JACE host in the network’s DHCP server/router configuration, noting the MAC address of this adapter as shown above.
Do not enable DHCP unless sure that your network has one or more DHCP servers! Otherwise, the JACE may become unreachable over the network.
DNS Domain

(Windows-based hosts only) The TCP/IP Domain Name System (DNS) domain this host belongs to, if used.
IPv4 Address

The “static” IP address for this host, unique on your network.
Be careful to understand the following:
- If enabling both LAN ports, note that the LAN1 IP address and LAN2 IP address must be on different subnets, otherwise the ports will not function correctly.
  
  For example, with a typical “Class C” subnet mask of 255.255.255.0, setting Interface 1=192.168.1.99 and Interface 2=192.168.1.188 is an invalid configuration, as both addresses are on the same subnet.
- A JACE controller does not provide IP routing or bridging operation between different Interfaces (LAN ports, GPRS, dialup, WiFi).
IPv4 Gateway

(Windows-based hosts only) IP address for the device that forwards packets to other networks or subnets.
IPv4 Subnet Mask

The “static” IP subnet mask used by this host.
DHCPv4 Server

Applies only if DCHP is enabled. Shows read-only address of the DHCP server from which this host last obtained its IP address settings.
DHCPv4 Lease Granted

Applies only if DCHP is enabled. Shows a read-only timestamp of when the DHCP lease started.
DHCPv4 Lease Expires

Applies only if DCHP is enabled. Shows a read-only timestamp of when the DHCP lease will expire, and will need renewal.
DNSv4 Servers (DNS Servers)

(Windows-based hosts only) The IP address for one or more DNS servers, each of which can automate associations between hostnames and IP addresses. Included are icon-buttons to Add (to enter IP address of server), Delete, and move Up/Down (to set the DNS search order).

IPv6 Settings

IPv6 support is provided in most QNX-based JACE models running AX-3.6 or later (“Hotspot JACE”), but is not available in any “J9 JACE” or any QNX-based JACE running AX-3.5 or earlier. See IPv6 support for background.
Windows-based hosts have IPv6 properties that are read-only. Any adjustments, if necessary, must be made directly from the Windows OS interface, that is the Control Panel.

Figure 102. IPv6 tab for Interface of (Hotspot) QNX-based JACE, in platform TCP/IP Configuration view

The following properties are on the IPv6 Settings tab of the selected Interface:

IPv6 Support

Yes or No, as read-only. Indicates if host platform’s OS supports IPv6.
- Some QNX-based JACEs running AX-3.6 or later (with “Hotspot” JVM) support IPv6. For those hosts that do not, the rest of the properties below do not appear.
- Windows-based OS hosts typically provide IPv6 support, as does Linux.
IPv6 Enabled

Checkbox for Enabled. Read-write for AX-3.6 or later “Hotspot JACE” only, where default is disabled (cleared). If a Windows-based host this is read-only, and indicates whether the host is configured with the IPv6 protocol.
Obtain IPv6 Settings Automatically

Checkbox for Enabled (default). Changeable for a AX-3.6 or later “Hotspot JACE” only. Provides for “auto-configuration” of IPv6 address, if acceptable. If enabled, the next two properties are read-only. If cleared, the two properties below must be entered manually.
IPv6 Address

The host’s IP address in IPv6 format, to be unique on its network.
IPv6 Network Prefix Length

The number of left-most contiguous bits of the IPv6 address (in decimal) that compose the subnet prefix.
DNSv6 Servers

(Windows-based hosts only, providing host’s OS has IPv6 enabled) Read-only IPv6 address for one or more DNS servers, each of which can automate associations between hostnames and IPv6 addresses.