Cabletron Systems SmartSTACK ELS10-27MDU Installation and operating instructions

9033276
ELS10-27MDU
User’s Guide Addendum

i
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.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL,
INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING
BUT NOT LIMITED TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS
MANUAL OR THE INFORMATION CONTAINED IN IT, EVEN IF CABLETRON SYSTEMS
HAS BEEN ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF
SUCH DAMAGES.
Cabletron Systems, Inc.
35 Industrial Way
Rochester, NH 03867
©February 2000 by Cabletron Systems, Inc.
All Rights Reserved
Printed in the United States of America
Order Number: 9033276
Cabletron is a registered trademark and SmartStack is a trademark of Cabletron Systems, Inc.

Notice
ii
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. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in a
commercial environment. This equipment uses, generates, and can radiate radio frequency
energy and if not installed in accordance with the operator’s manual, may cause harmful
interference to radio communications. Operation of this equipment in a residential area is
likely to cause interference in which case the user will be required to correct the interference at
his own expense.
WARNING: Changes or modifications made to this device which are not expressly approved
by the party responsible for compliance could void the user’s authority to operate the
equipment.
VCCI Notice
This is a Class A product based on the standard of the Voluntary Control Council for
Interference by Information Technology Equipment (VCCI). If this equipment is used in a
domestic environment, radio disturbance may arise. When such trouble occurs, the user may
be required to take corrective actions.

iii
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 par le ministère des Communications du Canada.

Notice
iv
DECLARATION OF CONFORMITY
Application of Council Directive(s): 89/336/EEC
73/23/EEC
Manufacturer’s Name: Cabletron Systems, Inc.
Manufacturer’s Address: 35 Industrial Way
PO Box 5005
Rochester, NH 03867
European Representative Name: Mr. J. Solari
European Representative Address: Cabletron Systems Limited
Nexus House, Newbury Business Park
London Road, Newbury
Berkshire RG14 2PZ, England
Conformance to Directive(s)/Product Standards: EC Directive 89/336/EEC
EC Directive 73/23/EEC
EN 55022
EN 50082-1
EN 60950
Equipment Type/Environment: Networking Equipment, for use in a
Commercial or Light Industrial Environment.
We the undersigned, hereby declare, under our sole responsibility, that the equipment
packaged with this notice conforms to the above directives.
Manufacturer Legal Representative in Europe
Mr. Ronald Fotino Mr. J. Solari
___________________________________ ___________________________________
Full Name Full Name
Compliance Engineering Manager Managing Director - E.M.E.A.
___________________________________ ___________________________________
Title Title
Rochester, NH, USA Newbury, Berkshire, England
___________________________________ ___________________________________
Location Location

v
Contents
Introduction............................................................................................................................................1
Product Overview .................................................................................................................................1
Configuring the ELS10-27MDU ..........................................................................................................3
Additional Commands...........................................................................................................3
Address Limiting.............................................................................................................3
Trapcontrol........................................................................................................................3
VLANs on the ELS10-27MDU.............................................................................................................4
Configuring VLAN ...............................................................................................................................7
Adding a VLAN......................................................................................................................7
Deleting a VLAN.....................................................................................................................7
Database Requirements........................................................................................................................8
Non-Supported Features........................................................................................................9

vi
Contents

9033276 1
Introduction
This addendum introduces the ELS10-27MDU. It explains the default
configuration and provides the user with the necessary information to
manage and configure this switch. This addendum is provided in
conjunction with the ELS10-27TX User Guide, and does not repeat the
information found in that document. The user should refer to the
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. The ELS10-27MDU has
unique firmware, designed forproduct installationin MDU environments,
in which security and restriction of data traffic between user ports are the
primary considerations. This is accomplished by using the special VLAN
configuration features of the switch.
The default configuration of the ELS10-27MDU is designed to limit traffic
between the ports for purposes of security. This configuration may be
modified as needed. There are 24 10BASE-T ports (user ports), and 3 Fast
Ethernet ports (ports 25, 26 and 27). Port 27 is the uplink port, and Ports 25
and 26 are downlink ports. The downlink ports pass traffic only to an
uplink port, and similarly the uplink port passes traffic only to a downlink
port (or to the user ports on that switch) when multiple ELS10-27MDU
switches are cascaded. The uplink port at the highest level in a cascaded
configuration of switches would typically be connected to a router with a
connection to the Internet. Security is provided by restricting traffic as
follows:

Product Overview
29033276
• 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
• Traffic is inhibited from passing between the 10Mbps ports and the
100Mbps downlink ports
• All IP packets not received on the uplink port are ignored
Figure 1 shows a sample configuration with seven ELS10-27MDU
cascaded in three layers.
Figure 1. Sample ELS10-27MDU Configuration
18X
PORTSTATUS MODE
FDX
COLRX 100
ACTTX
USR
MON
10X6X4X2X 8X 12X 14X 16X 22X20X 24X 25X 26X 27X 27
26
EPIM100
LINK
STATUS
STATUS STATUS STATUS
STATUS
STATUS
STATUS STATUS STATUS STATUS STATUS STATUS
STATUS STATUS STATUS
RESET
COM
CPU
PWR STATUS
LINK
LINK LINK LINK
LINK LINK LINK LINK LINK LINK
LINK
LINK LINK LINK
DOWNLINKS
10/100BASE TX
UPLINK
10/100BASE TX
LNK
LNK
24 User
Ports
18X
PORTSTATUS MODE
FDX
COLRX 100
ACTTX
USR
MON
10X6X4X2X 8X 12X 14X 16X 22X20X 24X 25X 26X 27X 27
26
EPIM100
LINK
STATUS
STATUS STATUS STATUS
STATUS
STATUS
STATUS STATUS STATUS STATUS STATUS STATUS
STATUS STATUS STATUS
RESET
COM
CPU
PWR STATUS
LINK
LINK LINK LINK
LINK LINK LINK LINK LINK LINK
LINK
LINK LINK LINK
DOWNLINKS
10/100BASE TX
UPLINK
10/100BASE TX
LNK
LNK
18X
PORTSTATUS MODE
FDX
COLRX 100
ACTTX
USR
MON
10X6X4X2X 8X 12X 14X 16X 22X20X 24X 25X 26X 27X 27
26
EPIM100
LINK
STATUS
STATUS STATUS STATUS
STATUS
STATUS
STATUS STATUS STATUS STATUS STATUS STATUS
STATUS STATUS STATUS
RESET
COM
CPU
PWR STATUS
LINK
LINK LINK LINK
LINK LINK LINK LINK LINK LINK
LINK
LINK LINK LINK
DOWNLINKS
10/100BASE TX
UPLINK
10/100BASE TX
LNK
LNK
18X
PORTSTATUS MODE
FDX
COLRX 100
ACTTX
USR
MON
10X6X4X2X 8X 12X 14X 16X 22X20X 24X 25X 26X 27X 27
26
EPIM100
LINK
STATUS
STATUS STATUS STATUS
STATUS
STATUS
STATUS STATUS STATUS STATUS STATUS STATUS
STATUS STATUS STATUS
RESET
COM
CPU
PWR STATUS
LINK
LINK LINK LINK
LINK LINK LINK LINK LINK LINK
LINK
LINK LINK LINK
DOWNLINKS
10/100BASE TX
UPLINK
10/100BASE TX
LNK
LNK
24 User
Ports
24 User
Ports
24 User
Ports
18X
PORTSTATUS MODE
FDX
COLRX 100
ACTTX
USR
MON
10X6X4X2X 8X 12X 14X 16X 22X20X 24X 25X 26X 27X 27
26
EPIM100
LINK
STATUS
STATUS STATUS STATUS
STATUS
STATUS
STATUS STATUS STATUS STATUS STATUS STATUS
STATUS STATUS STATUS
RESET
COM
CPU
PWR STATUS
LINK
LINK LINK LINK
LINK LINK LINK LINK LINK LINK
LINK
LINK LINK LINK
DOWNLINKS
10/100BASE TX
UPLINK
10/100BASE TX
LNK
LNK
18X
PORTSTATUS MODE
FDX
COLRX 100
ACTTX
USR
MON
10X6X4X2X 8X 12X 14X 16X 22X20X 24X 25X 26X 27X 27
26
EPIM100
LINK
STATUS
STATUS STATUS STATUS
STATUS
STATUS
STATUS STATUS STATUS STATUS STATUS STATUS
STATUS STATUS STATUS
RESET
COM
CPU
PWR STATUS
LINK
LINK LINK LINK
LINK LINK LINK LINK LINK LINK
LINK
LINK LINK LINK
DOWNLINKS
10/100BASE TX
UPLINK
10/100BASE TX
LNK
LNK
18X
PORTSTATUS MODE
FDX
COLRX 100
ACTTX
USR
MON
10X6X4X2X 8X 12X 14X 16X 22X20X 24X 25X 26X 27X 27
26
EPIM100
LINK
STATUS
STATUS STATUS STATUS
STATUS
STATUS
STATUS STATUS STATUS STATUS STATUS STATUS
STATUS STATUS STATUS
RESET
COM
CPU
PWR STATUS
LINK
LINK LINK LINK
LINK LINK LINK LINK LINK LINK
LINK
LINK LINK LINK
DOWNLINKS
10/100BASE TX
UPLINK
10/100BASE TX
LNK
LNK
24 User
Ports
24 User
Ports
To Internet
24 User
Ports