Routing Table Information and How to Assign ISDN IP for Dial-Out Connections

After configuring your Apex Router, you should have the correct route(s) in the routing table to insure your network traffic is going to the right directions. You can find it under Apex Manager >Advanced >Protocol Configuration >IP Routing Table.

1. If the router is in Client mode, regardless of it is in IP Master or Static IP mode.

The following example uses IP Address: 192.168.1.1 and Subnet Mask: 255.255.255.0 for the router, which are also the default IP settings in IP Master mode. The route you have should be:

You may notice that there is no LAN (Ethernet) interface or loopback. Actually the Ethernet and loopback routes are automatically generated by the router based on the LAN IP Setup parameters, the following information be seen in a Telnet session:

APEX 1100>show route

The fourth line is the LAN (Ethernet) interface, where IP Address: 192.168.1.1 and Subnet Mask: 255.255.255.0 are the defaults for the router. If you change the IP address of the router, the above will also change.

We do not recommend modifying the LAN (Ethernet) interface. However, you are still able to add or delete the generated route in the Telnet session, but not in the Apex Manager.

1. If the router is in Server mode and you are accepting calls from an ISDN modem or router with Dynamic address, or the ISDN modem with the exact same address with the ISDN IP address in the server router.

The following example uses IP Address: 200.200.200.1 and Subnet Mask: 255.255.255.0 for the router. The ISDN IP* is 100.100.100.1 with Subnet Mask of 255.255.255.0. The dial-in party either has dynamic IP set up, or has static IP of 100.100.100.1 and Subnet Mask 255.255.255.0. The router has to be in Static IP mode if Sever mode has been selected.

*ISDN IP is the IP address you assign to the dial-in party. It could be an ISDN modem or router. You can find the ISDN IP under Apex Manager >Advanced >ISDN Interface >ISDN IP.

The route you have should be:

You may notice that there is no route at all. Actually the Ethernet and loopback routes are automatically generated by the router based on the LAN IP Setup parameters, the following information be seen in a Telnet session:

APEX 1100>show route

The fourth line is the LAN (Ethernet) interface, where router's IP Address: 200.200.200.1 and Subnet Mask: 255.255.255.0. If you change the IP address of the router, the above will be changed as well.

The ISDN route will not be added by the router until the dial-in party dials in. The ISDN route is automatically generated by the router based on the ISDN IP Setup parameters. Once the dial-in party made the successful connection, you will see the Tenet session shows:

Though the Telnet session shows a new route when the dial-in party dials in, the routing table under
Apex Manager >Advanced >Protocol Configuration >IP Routing Table remains empty.

1. If the router is in Server mode and you are accepting calls from an ISDN router with the exact same address with the ISDN IP address in the server router.

The following example uses IP Address: 200.200.200.1 and Subnet Mask: 255.255.255.0 for the router. The ISDN IP is 100.100.100.1 with Subnet Mask of 255.255.255.0. The dial-in ISDN router has static IP of 100.100.100.1 and Subnet Mask 255.255.255.0.

Note that the automatic generated ISDN interface will not cover this type of set up. You MUST add the following route under Apex Manager >Advanced >Protocol Configuration >IP Routing Table before the router can be fully functional.

Note that the destination is the "Network Address" (see the Subnet Mask Table in the Appendix) of the dial-in router's IP. In this case, the server router's ISDN IP and dial-in router's IP are the same.

1. If the router is in Server mode and you are accepting calls from an ISDN modem with static address other than the ISDN IP address in the server router.

The following example uses IP Address: 200.200.200.1 and Subnet Mask: 255.255.255.0 for the router. The ISDN IP is 100.100.100.1 with Subnet Mask of 255.255.255.0. The dial-in ISDN modem has static IP of 50.50.50.1 and Subnet Mask 255.255.255.0.

Note that the automatic generated ISDN interface will not cover this type of set up. You MUST add the following route under Apex Manager >Advanced >Protocol Configuration >IP Routing Table before the router can be fully functional.

1. If the router is in Server mode and you are accepting calls from an ISDN router with static address other than the ISDN IP address in the server router.

The following example uses IP Address: 200.200.200.1 and Subnet Mask: 255.255.255.0 for the router. The ISDN IP is 100.100.100.1 with Subnet Mask of 255.255.255.0. The dial-in ISDN router has static IP of 50.50.50.1 and Subnet Mask 255.255.255.0.

Note that the automatic generated ISDN interface will not cover this type of set up. You MUST add the following route under Apex Manager >Advanced >Protocol Configuration >IP Routing Table before the router can be fully functional.