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Installation and Operation Manual Appendix D IR-IP Interface Module
ASM-40 Ver. 1.0 Quick Setup Menu D-13
ASM-40 with IR-IP
.6.5.4.3192.168.1.2
LAN IP Address: 192.168.1.2
IP Address
.248.248.248.248255.255.255.248
Mask: 255.255.255.248
Mask
192.168.1.1192.168.1.1192.168.1.1192.168.1.1192.168.1.1Default Gateway
Figure D-8. Selecting the IP Subnet Mask
WAN IP Address
Used to enter the IP address for the IR-IP WAN interface, i.e., the IP address to be
used by IP hosts on the WAN to reach this IR-IP interface module.
If the WAN IP Address field remain blank, IR-IP operates in the Unnumbered
Router Mode.
WAN IP Mask
Used to enter the IP subnet mask for the WAN interface.
Default Gateway
Operation without Default Gateway
The IP interface module is intended to enable the extension of LANs through the
ASM-40 link. Therefore, its default routing operation is different from the default
routing operation of standard IP routers:
IR-IP forwards packets with destinations not located on the local LAN through
the WAN interface
Packets received from the WAN interface and destined to hosts located on
the local LAN are forwarded to the LAN; other packets are discarded.
The default operation is used when the Default Gateway field is blank.
Operation with Default Gateway
You can instruct IR-IP to send packets with destinations not located on the local
LAN to a specific router, which is called the
default gateway
. The default gateway
must be connected to the local LAN.
To use this option, enter the IP address of another router attached to the local
LAN in the Default Gateway field.
It is very important to obtain the correct parameters from the system
administrator or ISP. The most common problem when establishing an IP
connection is incorrect configuration of IP parameters and default gateway. Do
not try to guess these parameters.
Note
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