RCA 608WL - Manual (Page 168)

Chapter 5
Expert Configuration
E-DOC-CTC-20041126-0013 v1.0
166
In the list below some detailed information is given regarding the various input fields:
Interface Name
:
Is a name that has local significance only and allows to reference a particular
Routed IPoA interface
Local IP Address
:
Is an IP address that must be configured on the local Routed IPoA Ethernet
interface and is provided by your ISP or system administrator.
Remote IP address :
Is an IP address that is configured on the device connected at the remote end of
the ATM virtual channel and is again supplied by your ISP or system
administrator
Destination Network
:
This input field allows to specify all networks (0.0.0.0/0), a summarized
network (e.g. 20.0.0.0/24, 20.0.1.0/24, 20.0.2.0/24 and 20.0.3.0/24 can be
summarized into 20.0.0.0/22) or a specific network (e.g. 20.0.0.0/24).
Additional networks can be specified via entries in the forwarding table.
The Routed IPoA interface can be used in unnumbered mode also. For example to
conserve IP addresses, a system administrator might decide not to use a local IP
address. As a consequence, host- and network routes that are automatically added
will point to the interface name instead of the local IP address.
The ultimate case is where both local and remote IP addresses are left unspecified.
However, still a destination network must be added for this Routed IPoA interface to
have any practical use.
The SpeedTouch™ Routed IPoA implementation is modelled as a point-to-point IP
interface. This does not prevent it however from being interoperable with interfaces
that adhere to a subnet model. E.g. Suppose only a remote IP address is given and a
net mask such as 20.0.0.1/30. The local IP address can easily be derived from this
information more specific: local IP address= 20.0.0.2/30.
As a side effect of this modelling, the SpeedTouch™ can easily support RFC3021,
Using 31-bit prefixes on IPv4 point-to-point links.