Managed 8 & 9 port switches, eight 10/100base-tx ethernet ports plus one 100base-fx port / eight 10/100base-tx ethernet ports plus one 1000base-sx port / eight 10/100base-tx ethernet ports (88 pages)
4 10/100/1000tx plus 4 sfp managed switch (99 pages)
Summary of Contents for MiLAN MIL-SM808GPxx
Page 1
8 Port 100BASE-FX Plus One SFP Intelligent Fiber Switch MIL-SM808GPxx USER GUIDE...
Page 2
Regulatory Approval - FCC Class A - UL 1950 - CSA C22.2 No. 950 - EN60950 - CE - EN55022 Class A - EN55024 Canadian EMI Notice This Class A digital apparatus meets all the requirements of the Canadian Interference-Causing Equipment Regulations. Cet appareil numerique de la classe A respecte toutes les exigences du Reglement sur le materiel brouilleur du Canada.
Page 3
To Contact MiLAN Technology For prompt response when calling for service information, have the following information ready: - Product serial number and revision - Date of purchase - Vendor or place of purchase You can reach MiLAN Technology technical support at: E-mail: support@milan.com Telephone: +1.408.744.2751 Fax: +1.408.744.2771...
Table of Contents 1. Introduction Features Intelligent Management Features Package Contents Management Methods Console and Telnet Management Web-based Management SNMP Network Management 2. Hardware Description Front Panel LED Indicators Rear Panel Desktop Installation 3. Network Application Segment Application 4. Network Configuration Connecting a Terminal or PC to the Console Port Console - Menu 4-1.
Page 5
4-3-4-2. Create a VLAN Group 4-3-4-3. Edit / Delete a VLAN Group 4-3-5. Priority Configuration 4-3-6. MAC Address Configuration 4-3-6-1. Static MAC Address 4-3-6-2. Filtering MAC Address 4-3-7. Misc. Configuration 4-3-7-1. Port Security 4-3-7-2. MAC Age Interval 4-3-7-3. Broadcast Storm Filtering 4-3-7-4.
Page 6
5-4-3. Console Port Information 5-4-4. Port Controls 5-4-5. Trunking 5-4-5-1. Aggregator Setting 5-4-5-2. Aggregator Information 5-4-5-3. State Activity 5-4-6. Filter Database 5-4-6-1. IGMP Snooping 5-4-6-2. Static MAC Address 5-4-6-3. Port Security 5-4-6-4. MAC Filtering 5-4-7. VLAN Configuration 5-4-7-1. Basic 5-4-7-2. Port VID 5-4-8.
Introduction The MIL-SM808G managed compact desktop switch is an ideal solution for a Fiber network infrastructure. It provides wire-speed, Fast Ethernet switching providing high-performance data transfer. The switch features a store-and-forward architecture with auto-learning of source addresses with an 8K-entry MAC address table. Figure 1-1.
Features Conforms to IEEE802.3u, IEEE802.3z and IEEE802.3x Ethernet Standards Eight 100Mbps Fast Ethernet Fiber ports and one SFP port One Console port on the front for switch software configuration Half-duplex mode for back pressure and flow control for full-duplex Store-and-forward switching architecture Automatic address learning, address migration 8K-entry MAC address table 2Mbit memory buffer sharing...
Package Contents Unpack the contents of the package and verify them against the checklist below. MIL-SM808G Switch Power Cord Four Rubber Feet RS-232 cable User Guide ( CD Manual) Warranty Card If any item is missing or damaged, please contact your local dealer for service.
Web-based Management The switch provides an embedded HTML web server residing in flash memory. It offers advanced management features and allows users to manage the switch from anywhere on the network through a standard browser such as Microsoft Internet Explorer or Netscape.
SNMP Network Management SNMP (Simple Network Management Protocol) provides a means to monitor and control network devices, and to manage configurations, statistic collection, performance, and security.
Hardware Description Front Panel The Front Panel of the MIL-SM808G switch series consists of eight 100Mbps Fast Ethernet Fiber ports, one SFP port, one console port, one LED-Indicator for Power, one LED-Indicator (LNK/ACT) for the SFP port and two LED-Indicators (LNK/ACT, FDX/COL) for each Fiber port. Console Fast Ethernet Port...
LED Indicators Figure 2-2. LED Indicators There are two LED-Indicators (LNK/ACT, FDX/COL) for each Fiber port, one LED-Indicator (LNK/ACT) for the SFP port and one LED-Indicator for power. The following table provides descriptions of the LED statuses and meaning. They provide a real-time indication of systematic operation status.
Rear Panel The 3-pronged power plug and the power on/off switch are located at the Rear Panel of the MIL-SM808G switch, as shown in Figure 2-3. The switches will work with AC in the range 100-240V AC, 50-60Hz. Power Plug Power On/Off Switch...
Page 15
Figure 2-4. Attaching Rubber Feet to each corner on the bottom of the Switch Power On Connect the power cord to the power socket on the rear panel of the Switch. Connect the other end of the cord to an appropriate power outlet. The internal power supply in the switch works with AC in the voltage range 100-240VAC, frequency 50~60Hz.
Network Application Segment Application For enterprise networks where large data broadcasts are constantly processed, this switch is suitable for department users to connect to the corporate backbone. You can use the MIL-SM808G switch to connect PCs, workstations, and servers to each other by connecting these devices directly to the switch. You can also use any of the Fiber ports of MIL-SM808G to connect with another Switch or Hub to interconnect each of your small switched workgroups to form a larger and long distance switched network.
Network Configuration Connecting a Terminal or PC to the Console Port Console management involves the administration of the switch via a direct connection to the RS-232 console port. This port is a female DB-9 connector. From the main menu of the console program, the user has access to manage the functions of the switch.
After the connection between Switch and PC is finished, turn on the PC and run a terminal emulation program or Hyper Terminal to match the following default characteristics of the console port: Baud Rate: 9600 bps Data Bits: 8 Parity: none Stop Bits: 1 Flow Control: None Figure 4-2.
Page 19
logon screen and a new login is necessary in order to continue. 4. The switch is shipped with a default IP address of 192.168.1.77. The default subnet mask is 255.255.255.0.
4-1 Main Menu There are five items for selection as follows: Status and Counters: Shows the status of the switch. Switch Static Configuration: Menus to configure the switch. Protocol Related Configuration: Configures protocol features. Reboot Switch: Restarts the system or resets the switch to the default configuration.
4-2-1. Port Status Type: Displays the port type of either 100Mbps or 1000Mbps. Enabled: A port that is enabled will be displayed as “Yes”. A port that is disabled will be displayed as “No”. Status: Displays the port's link. “Down” the port has no link, and “Up” the port has a link with the remote device.
4-2-2. Port Counters The following information provides a view of the current data packet information of the unit. The screen is not automatically updated. To see updated statistics, exit the menu and re-enter. Actions-> Press the Tab or Backspace key to choose action menu, and then press Enter key to select item <Quit>: Exits the port status page and returns to previous menu.
4-2-3. System Information System Description: Displays the name of the device. MAC Address: The unique hardware address assigned by manufacturer. Firmware Version: Displays the switch’s firmware version. Hardware Version: Displays the switch’s Hardware version. Kernel version: Displays Boot PROM version.
4-3. Switch Static Configuration Press the Tab or Backspace key to choose action menu, and then press the Enter key to select item. 4-3-1. Administration Configuration...
4-3-1-1. Device Information Device Name: 10 characters can be used to give the switch a unique name in order to distinguish it on the network. After configuration this name will show at the top of each menu screen. Device Content: 32 characters can be used to describe devices attached. Device Location: 32 characters can be used to give a location of the switch.
4-3-1-2. IP Configuration This menu enables the user to change the default settings of the IP address, subnet mask and gateway. Rebooting the switch is necessary to have the configuration change take affect. Actions-> <Edit>: Configures all items. When finished, pressing ESC returns to the action menu line.
4-3-1-3. Change Username Use this screen to change the User Name. The default user name is root. 4-3-1-4. Change Password Use this screen to change the Password. The default password is root.
4-3-2. Port / Trunk Configuration This page can change every port status and configure trunk groups. Press TAB key to change the configuration of each item. 1. Enabled: User can disable or enable the port. Port 9 is always enabled. 2.
Page 31
Actions-> <Quit>: Exits the port configuration page and returns to previous menu. <Edit>: Configures all items. When finished, pressing ESC returns to the action menu line. <Save>: Saves all configured values.
4-3-3. Port Mirroring Configuration Port mirroring is a method for monitoring traffic in switched networks. Traffic through ports can be monitored by one specific port. The traffic being received or transmitted by the monitored ports will be duplicated into the monitoring port.
Page 33
action menu line. <Save>: Saves all configured values.
4-3-4. VLAN Configuration All ports are automatically placed in VLAN 1, the default VLAN. To create new VLANs, use the Create a VLAN Group menu and add a VLAN. Make sure when you enter a VLAN name you do not leave spaces. For example VLAN2 is correct;...
4-3-4-1. VLAN Configure Choose a VLAN In the VLAN Configure menu select the type of VLAN you want to configure: No VLAN (default), Port Based, 802.1Q, or 802.1Q with GVRP. Save the configuration. There are 4 different options for VLANs to choose from using the space bar: Disabled, Port Based, 802.1Q and 802.1Q with GVRP.
Page 36
If more than one VLAN is necessary, the additional VLANs may be created. PVID (Port VID): Set the port VLAN ID that will be assigned to untagged traffic on a given port. This feature is useful for accommodating devices that you want to participate in the VLAN, but don’t support tagging.
4-3-4-2. Create a VLAN Group To create a VLAN and add tagged /untagged member ports to it: 1. VLAN Name: Type a name for the new VLAN using 15 alphanumeric characters and no spaces. 2. VLAN ID: Type a VID (between 2~4094). The default is 1. 3.
4-3-4-3. Edit / Delete a VLAN Group Use this menu to edit or delete a VLAN group. When editing the chosen VLAN, the user can change the protocol VLAN or a member port. A new protocol can be configured and the ports can be changed to tagged or untagged or deleted as member ports from this VLAN.
4-3-5. Priority Configuration 1. There are eight (0 to 7) priority levels that can be mapped as high or low priority queues. 2. High/Low Queue Service Ration (High:Low): User can select the ratio of high priority packets and low priority packets. Actions->...
Page 41
High : 1 Low means that the switch sends 2 high priority packets before sending 1 low priority packet.
Page 42
4-3-6.MAC Address Configuration 4-3-6-1.Static MAC Address When a static MAC address is added, it remains in the switch's address table, regardless of whether the device is physically connected to the switch. This saves the switch from having to re-learn a device's MAC address when the device is disconnected or powered-off and then becomes active again.
Add static MAC address 1. Press the <Add> key. Then press the <Edit> key on this menu to add a static MAC address. 2. Enter the MAC address to and from which the port should permanently forward traffic, regardless of the device’s network activity. 3.
Page 44
Edit static MAC address 1. Press <Edit> key to modify a static MAC address. 2. Choose the MAC address that you want to modify and then press enter. 3. Press the <Edit> key to modify all the items. 4. Press ESC to go back action menu line, and then select <Save> to save all configured values.
4-3-6-2.Filtering MAC Address Edit Filtering MAC address 1. Press the <Edit> key to modify a static Filtering address. 2. Choose the MAC address that you want to modify and then press enter. 3. Press the <Edit> key to modify all the items. 4.
4-3-7-1.Port Security A port set in security mode will be “locked” and be without address learning. Only the incoming packets with the source MAC address already existing in the address table can be forwarded. With port security, users can disable a port from learning new MAC addresses.
4-3-7-2.MAC Age Interval To configure a different MAC Age Interval, type the number of seconds that an inactive MAC address remains in the switch’s address table before it is deleted. Once the address is removed from the table, a device will have to send out broadcast packets to be relearned by the switch and have its address put in the table.
4-3-7-3.Broadcast Storm Filtering Broadcast storm filtering is used to limit the amount of broadcast traffic on the network. An excessive amount of broadcast traffic can inhibit data packets from timely delivery. The valid threshold values are 5%, 10%, 15%, 20%, 25% and NO. If the broadcast traffic is greater than the configured value, broadcast packets will be dropped.
4-3-7-4.Max Bridge Transmit Delay Bound Max bridge transmit delay bound (0,1-4 sec): Limits the packets queuing time in the switch. If enabled, the packets exceeding the queuing time will be dropped. Press the Space key to set the time. Valid values are 1sec, 2sec, 4sec and Off.
Page 52
Actions-> <Edit>: Configures all items. When finished, pressing ESC returns to the action menu line. <Save>: Saves all configured values. <Quit>: Exits this page and returns to previous menu.
4-4.Protocol Related Configuration 4-4-1.STP 4-4-1-1.STP Enable This page enables or disables the Spanning Tree function. Press the Space key to select Enabled or Disabled.
4-4-1-2.System Configuration Spanning tree information for the Root Bridge on the left is for display only. Configure new values for the STP parameter on the right. You must enable STP function before selecting the configuration menu. Priority: The value used to identify the root bridge. The bridge with the lowest value has the highest priority and is selected as the root.
Page 56
from its Spanning-Tree Protocol learning and listening states to the forwarding state. Enter a number 4 through 30.
4-4-1-3.STP Port Configuration 1. PortState: Spanning tree status for each port. 2. PathCost: Specifies the path cost of the port that the switch uses to determine which ports are the forwarding ports. If you change the value, you need to restart the switch for valid value change to take effect. 3.
Page 58
4-4-2.SNMP Any Network Management station running the Simple Network Management Protocol (SNMP) can manage the switch provided that the Management Information Base (MIB) is installed. SNMP is a protocol that governs the transfer of information between management and agent. The switch supports SNMP V1.
4-4-2-1.System Options Press <Edit> to enter all items, and then press <Save> to save the configured values. 1. System Name: Enter a name to identify the switch. 2. System Contact: Enter the name of the contact person or organization. 3. System Location: Enter the location of the switch.
Page 61
4-4-2-2.Community Strings Community strings serve as passwords and can be entered as one of the following: Read only: Enables requests accompanied by this string to display MIB-object information. Read Write: Enables requests accompanied by this string to display MIB-object information and to set MIB objects. To enter SNMP Community Strings: 1.
Page 62
<Save>: Saves all configured values. <Quit>: Exits this page and returns to previous menu.
4-4-2-3.Trap Managers A trap manager is a management station that receives traps. The switch generates system alerts. If no trap manager is defined, no traps are issued. Create a trap manager by entering the IP address of the station and a community string.
Page 64
4-4-3.GVRP Use the GVRP Configuration screen to enable or disable GVRP (GARP VLAN Registration Protocol) support. Press the Space key to choose Enabled or Disabled. Actions-> <Edit>: Configures all items. Press the Space key to choose Enabled or Disabled mode. When finished, pressing ESC returns to the action menu line. <Save>: Saves all configured values.
4-4-4-1.Aggregator Setting 1. Group: Displays the trunk group ID. NOTE: Before setting LACP support, you must first set the trunk group using the Port / Trunk Configuration screen. 2. LACP: Press the Space key to enable or disable LACP (Link Aggregation Control Protocol) support.
4-4-4-2.State Activity Active: The port automatically sends LACP protocol packets. Passive: The port does not automatically sends LACP protocol packets, and responds only if it receives LACP protocol packets from the opposite device. Actions-> <Edit>: Configures all items. When finished, pressing ESC returns to the action menu line.
4-4-4-3.LACP Status When setting a trunking group, the relationship status information may be seen on the LACP Group Status screen. Actions-> <Quit>: Exits this page and returns to previous menu.
4-5.Reboot Switch Default: Resets the switch to the factory default configuration. The software version that the switch will be reset to can be found on the “System Information” menu under the main menu “Status and Counters”. Restart: Reboots the switch to enable items that have been configured. Warning: The unit must be allowed to complete restart process to restore the defaults without an interruption.
4-6.Updating Firmware using the Console Port 1. While booting the switch, press the X key to start the Xmodem routine on the device. 2. Pressing X will cause the switch Xmodem application to begin and cause the baud rate to change to 57600 bps. You will need to disconnect the cable connected to the serial port, and change the baud rate of your hyper-terminal application on your laptop to 57600 bps, then connect the cable and reconnect to the switch.
Page 72
6. After successfully upgrading to the new firmware, change the baud rate back to the default 9600bps.
Web-Based Management This section introduces the configuration and functions of the web-based management of MIL-SM808G switch series. The managed switch series provides an embedded HTML website residing in flash memory. This feature allows users to manage the switch from anywhere on the network through a standard web browser.
5-2. Port status State: Displays port status off or on depending on user setting. “Unlink” means the port is offline or “off ”. Link Status: Down is “No Link”, Up is “Link” Auto Negotiation: Indicates if the port is in auto negotiation mode. Speed status: Displays link speed.
5-3. Port Statistics 1. The following information provides a view of the current status of the unit. A single port counter screen: 5-4. Administrator The management functions include IP address, switch settings, console port information, port controls, link aggregation, filter database, VLAN configuration, spanning tree, port mirroring, SNMP, security manager, TFTP update firmware, configuration backup, system reset, and reboot.
5-4-1. IP Address The IP Settings can be changed by entering new values and clicking the apply button. The switch must be reset for the new IP address to take effect. Default IP:192.168.1.77 Subnetmask:255.255.255.0 Gateway:192.168.1.6 5-4-2. Switch Settings 5-4-2-1.Basic Description: Displays the name of device type. MAC Address: Displays unique hardware address assigned by manufacturer.
5-4-2-2.Advanced 1. Miscellaneous Settings: MAC Address Age-out Time: Type the number of seconds that an inactive MAC address remains in the switch's address table. The valid range is 300 to 765 seconds. Default is 300 seconds. Max bridge transit delay bound control: Limits the packets queuing time in the switch.
Page 82
2. Priority Queue Service settings: First Come First Service: The sequence of packets sent is dependent on the order of arrival. The first packets in the queue are transmitted before any other packets. All High before Low: The high priority packets are sent before the low priority packets.
Page 84
3. Protocol Enable Setting: Enable Spanning Tree Protocol: Enables STP. The recommended default is to disable STP. Enable Internet Group Multicast Protocol: Enables IGMP protocol. IGMP Query Mode: Recognizes different queries from clients or servers to decide which Query will be the first priority. The four modes are: Auto Mode: Chooses the switch that has the smallest IP address to be set for the IGMP Query mode.
Page 85
4. IGMP Theory of Operation The following three topologies detail how IGMP Query works and to be configured within a network: 1. Auto mode needs to be enabled when the router’s IP address is smaller than other switches in the subnet. 2.
Page 87
3. The following topology must be set when the IP address of the switch is not the smallest in the subnet. The network will cause a multi-cast storm from the IGMP client report if it is in Auto mode. All switches must be in disable mode when the VOD server is configured for IGMP Querier.
5-4-3. Console Port Information Console is a standard UART interface to communicate with a serial port. The Windows HyperTerminal program can be used to link the switch with the console port. In order to change any of these parameters, you must be connected to the console port.
5-4-4. Port Controls The menu allows changing of port configurations. State: User can disable or enable ports 1-8, port 9 is always enabled. Auto Negotiation: Ports 1-8 are fixed to disabled mode, and port 9 is enabled. Speed setting: Ports 1-8 are set at a fixed speed of 100Mbps. Port 9 is fixed at 1000Mbps (SFP port).
Page 90
on the network. LACP operation requires full-duplex mode. For more detailed information refer to IEEE 802.3ad. If there are two trunk groups A and B, and B group is enabled LACP, then it will act as a redundant link (Backup group for Trunk group A). If trunk group A fails, Group B will be it's backup.
5-4-5-1. Aggregator Setting System Priority: A value used to identify the active LACP. The switch with the lowest value has the highest priority and is selected as the active LACP. To create a trunk across two or more ports: 1. Group ID: Choose the "Group ID" and click "Get". 2.
5-4-5-2. Aggregator Information The LACP Aggregator relation information is displayed as shown. 5-4-5-3. State Activity Active (select): The active port automatically sends LACP protocol packets. Passive (not selected): The passive port does not automatically send LACP protocol packets, but responds only if it receives LACP protocol packets from the other device.
5-4-6. Filter Database 5-4-6-1. IGMP Snooping The switch supports IP multicasting. You can enable IGMP via the web management’s configuration screen. In addition, you can view different multicast groups, VIDs and member ports, and IP multicast addresses that range from 224.0.0.0 through 239.255.255.255. The Internet Group Management Protocol (IGMP) is an internal protocol of the Internet Protocol (IP) suite.
5-4-6-2. Static MAC Address When a static MAC address is added, it remains in the switch's address table, regardless of whether or not the device is physically connected to the switch. This saves the switch from having to re-learn a device's MAC address when the device is disconnected or powered-off.
5-4-6-3. Port Security A port in security mode will be “locked” with address learning blocked. Only the incoming packets with SMAC already existing in the address table can be forwarded normally. The user can disable the port from learning any new MAC addresses, then use the static MAC addresses screen to define a list of MAC addresses that can use the secure port.
5-4-6-4. MAC Filtering MAC address filtering allows the switch to drop unwanted traffic. Traffic is filtered based on the destination addresses. Steps to specify a MAC address to filter: 1. In the MAC Address box, enter the MAC address to filter. 2.
5-4-7. VLAN Configuration A Virtual LAN (VLAN) is a logical network grouping that limits the broadcast domain. It allows you to isolate network traffic so only members of the VLAN receive traffic from the same VLAN members. Basically, creating a VLAN from a switch is logically equivalent of reconnecting a group of network devices to another Layer 2 switch.
5-4-7-1. Basic VLAN Configuration By default, there are no VLANs set for the switch. In order to configure any of the different types of VLANs, VLANs need to be enabled in the switch using Settings/Advanced/Protocol Enable Settings/VLAN Operational Mode. The following are the choices offered: Port Based VLANs This screen shows the current Port Based VLANs configured.
Page 100
switch on separate VLANs except for the port that has the server connected to it. This port is then shared by all the VLANs. This enables security between ports, but allows all ports access to the server. Create a VLAN and add tagged member ports to it. 1.
5-4-7-2. Port VID Configure port VID settings: From the main Tag-based (IEEE 802.1Q) VLAN page, click Port VID Settings. Port VID (PVID) Used for setting the Port VLAN ID that will be assigned to untagged traffic on a given port. For example, if port 9's Default PVID is 100, all untagged packets on port 9 will belong to VLAN100.
Page 102
Ingress Filtering Rule 2: Drop Untagged Frame. By default all untagged frames are forwarded.
5-4-8. Spanning Tree The Spanning-Tree Protocol (STP) is a standardized method (IEEE 802.1D) for avoiding loops in switched networks. When STP is enabled it ensures that only one path at a time is active between any two nodes on the network. Spanning-Tree Protocol can be enabled using web management’s switch setting advanced item, and selecting enable Spanning-Tree protocol.
Page 104
Information about the current spanning tree status is displayed in this table. Parameter Description The priority value used to identify the root bridge can be changed. The Priority bridge with the lowest value has the highest priority and is selected as the root.
Page 105
The priority and path cost can be configured for each port. Click the Apply button to modify the configuration Parameter Description A change to the Port Priority affects which port will be the root port. Port The lowest number has the highest priority. The range is 0-255 and Priority the default setting for all ports is 128.
5-4-9. Port Mirroring The Port Mirroring feature is disabled by default. Selecting enable from the pull down menu will cause the selected traffic from the selected monitor ports to be mirrored to the selected analysis port. Press the Apply button to submit the changes.
5-4-10. SNMP SNMP is a protocol that governs the transfer of information between management and agent. The switch supports SNMP V1. Any Network Management station running the Simple Network Management Protocol (SNMP) can manage the switch provided that the Management Information Base (MIB) is installed.
Page 108
Read only: Enables requests accompanied by this string to display MIB- object information. Read write: Enables requests accompanied by this string to display MIB- object information and to set MIB objects. 3. Trap Manager A trap manager is a management station that receives traps. Traps are the system alerts generated by the switch.
5-4-11.Security Manager The user can change the user name and password to keep the switch secure. The default user name and password are below. User Name: root Password: root...
5-4-12. TFTP Update Firmware The following menu options provide some system control functions to allow a user to update firmware and remotely boot the switch system: • Executing TFTP software • Copy firmware update version image.bin to TFTP software directory. •...
5-4-13-2. TFTP Backup Configuration Use this screen to set the TFTP server IP address. You can save current EEPROM value from here, then go to the TFTP Restore Configuration screen to restore the EEPROM value.
Technical Specifications This section provides the specifications of MIL-SM808G switch product. Standards IEEE 802.3u 100BASE- FX Fast Ethernet Compliance IEEE 802.3z Gigabit Fiber Protocol CSMA/CD Max Forwarding 14,8800 pps per Fast Ethernet port, 148,8000 pps per Gigabit Ethernet port (SFP) Max Filtering Rate LED Indicators Fiber Port :...
Troubleshooting This section is intended to help you solve some common problems encountered while using the MIL-SM808G switch series. Incorrect connections Faulty or loose cables Look for loose or obviously faulty connections. If they appear to be OK, make sure the connections are snug. If that does not correct the problem, try different cables.
Diagnostic LED Indicators The switch can be easily monitored through panel indicators to assist in identifying problems. If the power indicator does turn on when the power cord is plugged in, you may have a problem with power outlet or power cord. However, if the switch powers off after running for awhile, check for loose power connections, power losses or surges at power outlet.
Page 117
Cabling 100BASE-FX fiber port: Multi-mode fiber connector types must use 50/125 or 62.5/125 µm multi-mode fiber cable. Two devices may be connected over a 2 kilometer distance. Single-mode fiber connector types must use 9/125 µm single-mode fiber cable. Two devices may be connected over a 15 or 60 kilometer distance in full duplex operation in single-mode.
Need help?
Do you have a question about the MIL-SM808GPxx and is the answer not in the manual?
Questions and answers