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Notice Notice Cabletron Systems reserves the right to make changes in specifications and other information contained in this document without prior notice. The reader should in all cases consult Cabletron Systems to determine whether any such changes have been made. The hardware, firmware, or software described in this manual is subject to change without notice.
Notice FCC Notice This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.
Notice Industry Canada Notice This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus set out in the Radio Interference Regulations of the Canadian Department of Communications. Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les limites applicables aux appareils numériques de la class A prescrites dans le Règlement sur le brouillage radioélectrique édicté...
Notice DECLARATION OF CONFORMITY Application of Council Directive(s): 89/336/EEC Manufacturer’s Name: Cabletron Systems, Inc. Manufacturer’s Address: European Representative Name: Mr. J. Solari European Representative Address: Conformance to Directive(s)/Product Standards: Equipment Type/Environment: Networking Equipment, for use in a We the undersigned, hereby declare, under our sole responsibility, that the equipment packaged with this notice conforms to the above directives.
ELS10-27TX User Guide for basic switch installation, management and technical information. Product Overview The ELS10-27MDU is a 24 port 10BASE-T switch with three Fast Ethernet ports. It is a specially modified version of the ELS10-27TX, designed to provide Internet access in Multiple Dwelling Units (MDUs), such as hotels, apartment buildings, and dormitories.
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• Traffic only passes between the 10Mbps ports and the single 100Mbps uplink port • Traffic only passes between the 100Mbps downlink port(s) and the single 100Mbps uplink port on another ELS10-27MDU switch in a cascaded configuration • Traffic is inhibited from passing between 10Mbps ports •...
Configuring the ELS10-27MDU The ELS10-27MDU may be managed by the Local Console or over the uplink port (port 27). If using the uplink port, an IP address is required. In the default configuration, port 27 is in the 0x01C VLAN. To Assign an IP address to this port, type: ipaddr [IP-ADDRESS [NETWORK-MASK]] 0x01C Additional Commands...
IEEE 802.1Q is a standard for virtual bridged local area networks (VLANs). It provides an alternate method for forwarding packets through a switch. In an 802.1D (Spanning Tree) bridge, packets are forwarded in accordance with the spanning tree as dynamically created by the 802.1D protocol Bridge Protocol Data Units (BPDUs), and the spanning tree state of each port.
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The ELS10-27MDU supports some 802.1Q VLAN capabilities. Static capabilities are provided. GVRP is not supported at this time. The ELS10-27MDU operates in 802.1Q mode only. All ports are configured as access ports. When a packet is received, an 802.1Q tag is inserted into the packet.
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VLANs on the ELS10-27MDU VLAN ID for the ELS10-27MDU Ports Table 1. Port # Default VLAN ID 10Mbps port - user 10Mbps port - user 10Mbps port - user 10Mbps port - user 10Mbps port - user 0X10 10Mbps port - user 0x11 10Mbps port - user 0x12...
Configuring VLAN The ELS10-27MDU is pre-configured when shipped. Each of the 10Mbps ports is a separate VLAN with only the CPU and the 100Mbps uplink port as members of this VLAN. This provides for maximum security in a Multiple Dwelling Unit environment. The VLAN configuration may be changed, however, to suit different needs.
Database Requirements Database Requirements The ELS10-27MDU supports a maximum of 2,048 possible database entries. Under the default configuration, 559 of these entries are used by the system, leaving 1,489 entries available for learning. With the first conversation requiring 29 database entries, and each additional conversation requiring 2 entries, a maximum of 730 conversations can take place simultaneously without flooding.
Non-Supported Features The specialized firmware of the ELS10-27MDU has been designed for use in a secure multi-dwelling unit environment, for which certain features of the ELS10-27TX are not desired. The latest ELS10-27MDU release notes should be reviewed to determine if any functionality support has changed or is not supported.
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