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USER'S GUIDE
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WAN
WAN interfaces define remote IP devices (hosts or routers) that require access to the
central network. This interface represents a different subnet than that connected to a
LAN network interface. The WAN interface can be used for both IP Host and PPP
remote devices.
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WAN (Remote LAN)
The Remote LAN interface allows remote MAC layer bridge devices to connect to an
IP subnet. All devices connected to the Remote LAN interface are treated as if they
were connected to the same Ethernet segment. The system provides an explicit IP
router presence on this interface that is implemented over ISDN. IP Address
Resolution requests are intelligently propagated to remote bridged networks
connected on this interface. The Remote LAN interface can be used for HDLC Bridge
and PPP remote devices.
Note:
e.
Edit the Address field so that it reflects this interface's IP address. Initially, the address field
will contain the subnet address. For example, if the subnet's address is 247.158.145.0 (which
would initially appear in the address field), and the interface's address is 247.158.145.2, you
would only need to change the initial address' 0 to a 2 to reflect the interface's address.
f.
Optional: configure the IP Address Pool feature. This feature provides you with a pool of
IP addresses that can be dynamically assigned to remote IP devices as they connect to the
system. This would occur when a remote IP device calls in to the system and has no IP
address, and requests to have one assigned.
If this interface makes use of an IP Address Pool:
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Enter the Start IP Pool Address. This is the starting IP address in the range of available
IP addresses.
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Enter the End IP Pool Address. This is the ending IP address in the range of available IP
addresses.
g. For LAN interfaces only. Select the LAN Port Number associated with this interface.
h. Enter the Transmit Broadcast Address. This specifies the transmit broadcast address on
numbered interfaces (meaning all interfaces except interfaces that have been defined as
unnumbered). This information is used by all network applications (protocols) that use
broadcasting capabilities. In most cases, the default transmit address is used (in example
screen below, the default transmit address is 247.158.145.255). A different numerical
address would be needed only if the default has been configured, and the machines are not
responding to IP RIP or some other broadcast protocol. Regardless of the address entered,
the goal is to allow broadcasts from the defined interface to all devices on the local network.
106
SFVRA Configuration Manager
If you define a WAN and a LAN interface to be on the same subnet, the system
with the LAN interface will automatically consider WAN devices to be part of the
LAN. This will extend the LAN. This special type of interface is called a Direct Host
Interface.
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