IBM i 7.2 Ethernet Device Server Support (WAN over LAN) IBM i 7.2 adds support connections to Ethernet device servers ( EDS ), which are also known as Ethernet serial servers or Ethernet terminal servers. These devices are external non-IBM equipment which are Ethernet-attached and contain one or more serial ports (RS/232) to which external modems can be attached. A compatible Ethernet device server must support RFC 2217. RFC 2217 (Telnet Com Port Control Protocol) is an extension of the Telnet Protocol that provides a method for device servers to accept Telnet sessions and pass the Telnet data received to a com port, and pass data received from the com port to the client.
It also allows the device server to send the client any serial line status changes, and allows the client to manage flow control with the device server. It also allows a client to send configuration information to a device server. IBM i is an RFC 2217 client, and it establishes a Telnet session to an Ethernet device server that is an RFC 2217 server. An IBM i RFC 2217 session provides a virtual com port for an Async or PPP line. IBM i support for Ethernet device servers provides the following capabilities:. Saves PCIe slots for applications requiring a modem.
Provides WAN connectivity for servers that do not have available PCIe slots (e.g. Blade servers). Allows IBM i client partitions with virtual I/O to use FAX and other WAN applications.
Allows the same Ethernet adapter which provides TCP/IP connectivity for an IBM i partition to provide WAN connectivity Ethernet Device Server Information. IBM i has been tested with the following Ethernet device servers: - Digi PortServer TS 4 - Digi ConnectPort TS 16 - Perle IOLAN SDS 4. Ethernet device servers typically provide a web-based interface for configuration and management. For example, if a Digi PortServer has an IP address of 9.5.80.73, then entering in a web browser accesses the configuration and management interface.
International Technical Support Organization IBM System p5 520 and 520Q Technical Overview and Introduction September 2006. I still need to upgrade the ethernet adapter firmware before I go to 5.3 though, but I was unable to get a console connection up between my notebook and P5 server? I do not have an HMC. I was able to make a connection with a serial-serial cable to my IBM SAN switches, but not to any of my P5 servers.
Each serial port on an Ethernet device server has an assigned TCP port number. A specific serial port is accessed by establishing a Telnet session to the Ethernet device server IP address and the TCP port number assigned to the serial port (e.g. 9.5.) Digi PortServer and ConnectPort Information Digi PortServer and ConnectPort Information. Web-based configuration and management interface (e.g. ). The default user ID and password are root/dbps. The default TCP port numbers for the serial ports start at 2001 by default and increment sequentially (e.g.
2001, 2002, 2003, ). The Port Profile for the serial ports must be set to TCP Sockets - The TCP Sockets Profile allows serial devices to communicate over a TCP network.
The TCP Server configuration allows other network devices to initiate a TCP connection to the serial device attached to a serial port of the Digi device server. This is also referred to as Reverse Telnet Perle IOLAN Information Perle IOLAN Information.
Web-based configuration and management interface (e.g. ). The default user ID and password are admin/superuser. The default TCP port numbers for the serial ports start at port number at 10001 by default, and increment sequentially (e.g.
10001, 10002, 10003, ). The Profile for the serial ports must be set to Serial Tunneling - The Serial Tunneling profile configures a serial port to establish a virtual link over the network to a serial port on another IOLAN.
Both IOLAN serial ports must be configured for Serial Tunneling (typically one serial port is configured as a Tunnel Server and the other serial port as a Tunnel Client). In the Serial Tunneling configuration select Act as tunnel server External Modems IBM recommends the Multitech MT9234ZBA external modem, but most V.34 external modems should work. The modem needs an RS/232 port to be able to connect to the Ethernet Device Server. IMPORTANT: Multitech MT9234ZBA external modem default settings include DSR always ON. This causes the vary on of an IBM i switched Async or PPP line to fail. The modem must be configured to have DSR ON only when there is a connection.
The procedure is included below. This same procedure should work for other external modems as well. Changing Multitech MT9234ZBA settings to have DSR ON only when there is a connection Changing Multitech MT9234ZBA settings to have DSR ON only when there is a connection This procedure uses STRITF on an IBM i to change the settings on a Multitech modem. This requires that the IBM i have a WAN card with a serial port to which the Multitech modem can be attached. This procedure can also be performed by attaching the modem to a serial port on a Windows or Linux PC and using a program such as HyperTerminal or PUTTY to send the AT commands to the modem. Create an Asynchronous Leased Line, Controller, and Device - CRTLINASC LIND(ASCLIN) RSRCNAME(.ETHDEVSVR) LINESPEED(57600) RMTINTNETA('xxx.xxx.xxx.xxx') RMTPORT(pppp).Where RMTINTNETA is the IP address of the Ethernet Device Server and RMTPORT is the serial port set for the TCP Sockets profile, usually port 2001.
See Digi PortServer and ConnectPort Information above for more detail on these two parameters.