Switch Management

Web / SNMP MANAGEABLE

SGSW-2403

24-Port 10/100/1000Mbps stackable switch

For advanced management capability, the SNMP/RMON Module provides a menu-driven system configuration program. This program can be accessed by a direct or modem connection to the serial port on the rear panel (out-of-band), or by a Telnet connection over the network (in-band).

The management agent is based on SNMP (Simple Network Management Protocol). This SNMP agent permits the switch to be managed from any PC in the network using in-band management software (such as Castle Rock's SNMPc). The management agent also includes an embedded HTTP Web agent. This Web agent can be accessed using a standard Web browser from any computer attached to the network.

The system configuration program and the SNMP agent support management functions such as:

Enable/disable any port
Set the communication mode for any port
Configure SNMP parameters
Configure VLANs or multicast filtering
Display system information or statistics
Configure the switch to join a Spanning Tree
Download system firmware
Restart the system

NOTES:

Before continue your switch management, please make sure the SGSW-NMU, management agent is installed in the switch or in one of the switch in the stack.

4.2 Required Connections

4.2.1 Console Port (Out-of-Band) Connections

Attach a VT100 compatible terminal or a PC running a terminal emulation program to the serial port on the switch´s rear panel. Use the null-modem cable provided with this package, or use a null modem connection that complies with the wiring assignments shown in Appendix B of this guide.

When attaching to a PC, set terminal emulation type to VT100, specify the port used by your PC (i.e., COM 1~4), and then set communications to 8 data bits, 1 stop bit, no parity, and 19200 bps (for initial configuration). Also be sure to set flow control to "none." (Refer to "Configuring the Serial Port" for a complete description of configuration options.)

NOTES:

If the default settings for the management agent's serial port have been modified and you are having difficulty making a console connection, you can display or modify the current settings using a Web browser as described under "Console Configuration".

4.2.2 Remote Management via the Console Port

4.2.2.1 Configure the Switch Site

Connect the switch´s DB9 serial port to the modem´s serial port using standard cabling. For most modems which use a 25-pin port, you will have to provide an RS-232 cable with a 9-pin connector on one end and a 25-pin connector on the other end. Set the modem at the switch´s site to force auto-answer mode. The following is a sample initialization string: "ATQ1S0=1&D0&K0&W" as defined below:

Q1 : Inhibit result codes to DTE
S0=1 : Auto answer on first ring
D0 : Don´t care DTR
K0 : Disables DTE/DCE flow control
W : Write command to modem memory

4.2.2.2 Configure the Remote Site

At the remote site, connect the PC´s COM port (COM 1~4) to the modem´s serial port. Set terminal emulation type to VT100, specify the port used by your PC (i.e., COM 1~4), and then set communications to 8 data bits, 1 stop bit, no parity, 19200 bps and no flow control.

4.2.3 In-Band Connections

Prior to accessing the Network Management Module via a network connection, you must first configure it with a valid IP address, subnet mask, and default gateway using an out-of-band connection or the BOOTP protocol.

After configuring the switch´s IP parameters, you can access the on-board configuration program from anywhere within the attached network. The on-board configuration program can be accessed using Telnet from any computer attached to the network. The switch and stack can also be managed by any computer using a Web browser (Internet Explorer 4.0, or Netscape Navigator 4.0 or above), or from a network computer using network management software such as SNMPc.

NOTES:

By default BOOTP is disabled. To enable BOOTP, see "IP Configuration".
Use the Network Configuration menu to specify the maximum number of simultaneous Telnet sessions that are supported by the system (up to four).
The on-board program only provides access to basic configuration functions. To access the full range of SNMP management functions, you must use SNMP- based network management software, such as Castle Rock's SNMPc.

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