Chapter Nine: Advanced Installations | IP routes 121 |
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The following diagram shows four computers with addresses assigned by the DIVA LAN ISDN Modem.
192.168.1.5 192.168.1.4 192.168.1.3 192.168.1.2
LAN interface
192.168.1.1
DIVA LAN ISDN Modem
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| Ethernet |
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B1 | B2 | D LINK |
| E1 | E2 E3 E4/C | ||||
DIVA LAN ISDN Modem
By default, the DIVA LAN ISDN Modem uses the mask 255.255.255.0 when assigning addresses. This means that the network portion of the address is: 192.168.1.0
Note that the DIVA LAN ISDN Modem has its own address on the LAN: 192.168.1.1
External addresses
When the DIVA LAN ISDN Modem establishes a connection to a remote site, it needs to be identified with an IP address. This address is associated with the profile making the connection. Since, two profiles are supported, two IP addresses are required.
Generally, these external addresses are dynamic, and are automatically negotiated when the DIVA LAN ISDN Modem connects with the remote site. For example, when establishing a link with an ISP, the ISP will generally assigns an IP address to the DIVA LAN ISDN Modem. This address will change each time the DIVA LAN ISDN Modem reconnects.
192.168.1.5 192.168.1.4 192.168.1.3 192.168.1.2
Internet
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| LAN interface |
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192.168.1.1 |
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| 222.182.22.39 | |||
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| LAN ISDN Modem |
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| B1 | B2 D LINK | E1 E2 E3 E4/C | |||||||||
DIVA LAN ISDN Modem
ISP |
ISDN
Network
In this example, the address 222.182.22.39 is assigned to the DIVA LAN ISDN Modem. The address is associated with the ISP profile, since this is the profile that was used to establish the connection.
