3com 520 User Manual

 

 

Admin. Contact:

 

Nakayama, Masaya (MN89)

 

Telephone:

 

+81 3 3812 211 ext2720

 

e-mail:

 

nakayama@nic.ad.jp

 

Technical Contact:

 

Conrad, David (DC296)

 

Telephone:

 

81 3 3580 3781 or 3580

 

Fax:

 

81 3 3580 3782

 

e-mail:

 

davidc@apnic.net

 

 

When routing and using the OfficeConnect 

 

Remote’s FastConnect protocol over ISDN or serial 

 

WAN links as opposed to PPP, you have the option of 

 

using numbered or unnumbered links.

 

A numbered link requires a valid IP address to be 

 

configured for both ports connected to each end of 

 

the link. The IP address used must be for a different 

 

subnet or network than that used by either LAN at 

 

each end of the link. An example is shown in 

 

 

 

. In this example, the Local Site uses the network 

 

address 191.000.100.xxx on its LAN. The remote site 

 

uses the network address 191.000.200 on its LAN and 

 

the link uses 191.000.300. 

 

 

Example of a Numbered Link

 

By default the WAN port and ISDN port have an IP 

 

address of 10.0.0.1. This is set to allow remote Telnet 

 

connections to the unit to enable configuration but 

 

must be changed when configuring the unit to allow 

 

correct operation. If you use the 

 

 

 

(

 

) option to configure the unit to operate over 

 

ISDN, the Port IP Address is set to unnumbered.

 

In most instances you should use unnumbered links. 

 

This is easier to configure and does not use network 

 

addresses which may be in short supply.

Rc.bk : RCAPPA.FRM  Page 15  Thursday, July 10, 1997  9:53 AM