User Manual

VCom Inc.

AP5857 Manual; ml_ap5857_08 (Oct 2005)

Approved: R.B.

ARP AND TELNET

The following procedure sets a temporary IP address so that setup over the network can be done:

a) Set a static ARP route with the desired IP address using the hardware address of the AP5857 Ethernet

interface, which is printed on a label on the inside cover of the module.

In Windows 95/98/NT, a static route can be set from the DOS prompt using the ARP command. The

following example command sets a default route to the IP address 10.10.10.11 via Hardware

Address 00-20-4A-52-3A-34: arp -s 10.10.10.11 00-20-4A-52-3A-34

In most UNIX systems, the following command can be used: arp -s 10.10.10.11 00:20:4A:52:3A:34

 The IP address 10.10.10.11 is used here as an example only. This address must be replaced by

one that is valid for the target network in order for this procedure to function properly. The IP

address assigned must be on the same subnet as the computer doing the initial configuration.

A network administrator can supply the proper values for these parameters.

Refer to Section 7.0, IP Addresses, Netmask, etc. for more information on IP address selection.

 In order for the ARP command to work in Windows, the ARP table on the PC must have at least

one IP address defined other than its own. Type “arp –a” at the DOS command prompt to verify

that there is at least one entry in the ARP table. If there is no other entry besides the local

machine, ping another IP machine on your network to build the table. This has to be a host other

than the machine on which you are working. Once there is at least one entry in the ARP table,

use the commands shown above to ARP and IP address to the VCom SNMPv1 interface.

b) Open a Telnet connection to port number 1. This connection will fail, but the AP5857 Ethernet interface

will change its IP address to the IP address assigned to the MAC address used by the arp –s command.

The following example opens a Telnet connection to IP address 10.10.10.11 port 1:

telnet 10.10.10.11 1

c) Open a Telnet connection to port 23 and set all required parameters.

The following example opens a Telnet connection to IP address 10.10.10.11 port 23:

telnet 10.10.10.11

d) When the Telnet connection is established, navigate through the menus until the Ethernet Settings menu

is reach (see section 2 for navigating menus). Enter Ethernet IP address, netmask and gateway.

Refer to Section 5.6.6 for further information on the Ethernet parameters available.

 The temporary IP address set in the above procedure is cleared after every power cycle of the

AP5857 Ethernet interface. Be sure to enter configuration data as described in Part d) to make

the change permanent!



The AP5857 Ethernet interface configuration is stored in nonvolatile memory and is retained

without AC power. The configuration can be changed any time.

6.5 Telnet

6.5.1 Operation

The steps required to enable telnet operation are as follows:

1. Configure the Network Interface as described in Section 6.4 above.

2. Login remotely using a shell, terminal, browser, or Telnet application window, refer to section 5 for further

information on using the local interface via telnet.