Patton electronics 2124 User manual

USER

MANUAL

MODEL 2124/2130

Ethernet

MicroBridge

SALES OFFICE

(301) 975-1000

TECHNICAL SUPPORT

(301) 975-1007

Part# 07M2124-UM

Doc# 08306U2-001,

Rev. B

Revised 10/27/06

An ISO-9001

Certiﬁed Company

TABLE OF CONTENTS

1.0 Warranty Information ................................................................. 2

1.1 Radio and TV Interference............................................................ 2

1.2 CE Notice...................................................................................... 3

1.3 Service.......................................................................................... 3

2.0 General Information.................................................................... 4

2.1 Features........................................................................................ 4

2.2 Description.................................................................................... 4

3.0 PPP Operational Background.................................................... 5

3.1 Applications .................................................................................. 5

4.0 Installation................................................................................... 8

4.1 Connect to 10BaseT Ethernet Port............................................... 8

Connect the 10BaseT Ethernet Port to a Hub.............................. 8

Connect the 10BaseT Ethernet Port to a PC (DTE)..................... 8

4.2 Power Connection ........................................................................ 9

AC Power Supply (100-240VAC) ................................................. 9

DC Power................................................................................... 10

5.0 Configuration ............................................................................ 13

5.1 LED STATUS MONITORS......................................................... 13

LAN side LEDs........................................................................... 13

LED Descriptions........................................................................ 14

Power and DCE/DTE interface LEDs......................................... 14

A Patton Electronics Model 2124

Specifications ........................................................................... 16

B Patton Electronics Model 2130

Specifications ........................................................................... 17

C 2124/2130 Factory

Replacement Parts ................................................................... 18

D 10BaseT Interface Pin Assignment

(RJ-45 Female Connector)

(DTE Configuration).................................................................. 19

E V.24 Terminal Interface Pin Assignment

(DB-25 Male Connector).......................................................... 20

F EIA-530 Terminal Interface Pin Assignment

(DB-25 Male Connector).......................................................... 21

G Power Supply Interface............................................................ 22

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model 2124/2130 components to be free

from defects, and will—at our option—repair or replace the product

should it fail within one year from the ﬁrst date of shipment.

This warranty is limited to defects in workmanship or materials, and does

not cover customer damage, abuse or unauthorized modiﬁcation. If this

product fails or does not perform as warranted, your sole recourse shall

be repair or replacement as described above. Under no condition shall

Patton Electronics be liable for any damages incurred by the use of this

product. These damages include, but are not limited to, the following:

lost proﬁts, lost savings and incidental or consequential damages arising

from the use of or inability to use this product. Patton Electronics specif-

ically disclaims all other warranties, expressed or implied, and the instal-

lation or use of this product shall be deemed an acceptance of these

terms by the user.

1.1 RADIO AND TV INTERFERENCE

The Model 2124/2130 generates and uses radio frequency energy, and if

not installed and used properly—that is, in strict accordance with the

manufacturer’s instructions—may cause interference to radio and televi-

sion reception. The Model 2124/2130 has been tested and complies

with the limits for a Class A computing device in accordance with the

speciﬁcation in Subpart J of Part 15 of FCC rules, that are designed to

provide reasonable protection from such interference in a commercial

installation. However, this is no guarantee that interference will not occur

in a particular installation. If the Model 2124/2130 does cause interfer-

ence to radio or television reception, which can be determined by discon-

necting the unit, the user is encouraged to try to correct the interference

by one or more of the following measures: moving the computing equip-

ment away from the receiver, re-orienting the receiving antenna and/or

plugging the receiving equipment into a different AC outlet (such that the

computing equipment and receiver are on different branches). In the

event the user detects intermittent or continuous product malfunction due

to nearby high power transmitting radio frequency equipment, the user is

strongly advised to use only a shielded twisted pair data cable that is

bonded to metalized external outer shield plugs at both ends. The use of

a shielded cable satisﬁes compliance with the Electromagnetic Compati-

bility (EMC) directive.

1.2 CE NOTICE

The CE symbol on your Patton Electronics equipment indicates that it is

in compliance with the Electromagnetic Compatibility (EMC) directive

and the LowVoltage Directive (LVD) of the Union European (EU). A Cer-

tiﬁcate of Compliance is available by contacting Patton Technical Sup-

port.

1.3 SERVICE

All warranty and non-warranty repairs must be returned freight prepaid

and insured to Patton Electronics. All returns must have a Return Mate-

rials Authorization (RMA) number on the outside of the shipping con-

tainer. This number may be obtained from Patton Electronics Technical

Support at:

Tel: (301) 975-1007

Email: http://www.patton.com

www: suppor[email protected]

Note

Packages received without an RMA number will not be

accepted.

Patton Electronics’technical staff is also available to answer any ques-

tions that might arise concerning the installation or use of your Model

2124/2130. Technical Support hours: 8AM to 5PM EST, Monday

through Friday.

WARNING!

This device is not intended to be connected to the public

telephone network.

2.0 GENERAL INFORMATION

Thank you for your purchase of this Patton Electronics product.This

product has been thoroughly inspected and tested and is warranted for

OneYear parts and labor. If any questions or problems arise during

installation or use of this product, please do not hesitate to contact Pat-

ton Electronics Technical Support at (301) 975-1007.

2.1 FEATURES

• Integral V.24 Male to 10BaseT Ethernet (Model 2124)

• Integral EIA-530 Male to 10BaseT Ethernet (Model 2130)

• Industry standard, shielded RJ-45 10BaseT connection

• 802.3 Ethernet supported by Transparent LAN bridging

• PPP Bridging Control Protocol (RFC 1638) with auto detection for

compatibility with existing Patton Bridge Modules

• 4096 MAC address table

• 1 MB RAM; 128KB FLASH

• Throughput latency of 1 frame

• Automatic LAN MAC address aging

• Nine LEDs monitor power, LAN, and DTE Interface signals

2.2 DESCRIPTION

The Patton Model 2124/2130 MicroBridge is an Ethernet Bridge that pro-

vides LAN extension when used in conjunction with a V.24 or EIA-530

DCE device, such as a DSU/CSU, NTU, or router.The Model 2124/2130

performs transparent Ethernet bridging and functions at the MAC level,

thus is transparent to higher level protocols such as TCP/IP, DECnet,

NETBIOS, and IPX network protocols.Only broadcast, multicast, or

frames set up for peered LAN are forwarded.The Model 2124/2130 is

802.3 Ethernet compliant and supports PPP Bridging Control Protocol

(RFC 1638) on the DTE side.

3.0 PPP OPERATIONAL BACKGROUND

PPP is a protocol used for multi-plexed transport over a point-to-point

link. PPP operates on all full duplex media, and is a symmetric peer-to-

peer protocol, which can be broken into three main components:1. A

standard method to encapsulate datagrams over serial links; 2. A Link

Control Protocol (LCP) to establish, conﬁgure, and test the data-link con-

nection;3.A family of Network Control Protocols (NCPs) to establish and

conﬁgure different network layer protocols.

In order to establish communications over a point-to-point link, each end

of the PPP link must ﬁrst announce its capabilities and agree on the

parameters of the link’s operation.This exchange is facilitated through

LCP Conﬁgure-Request packets.

Once the link has been established and optional facilities have been

negotiated, PPP will attempt to establish a network protocol. PPP will

use Network Control Protocol (NCP) to choose and conﬁgure one or

more network layer protocols. Once each of the network layer protocols

have been conﬁgured, datagrams from the established network layer

protocol can be sent over the link. The link will remain conﬁgured for

these communications until explicit LCP or NCP packets close the link

down, or until some external event occurs.

The PPP Bridging Control Protocol (BCP), deﬁned in RFC 1638, conﬁg-

ures and enables/disables the bridge protocol on both ends of the point-

to-point link. BCP uses the same packet exchange mechanism as the

Link Control Protocol (LCP). BCP is a Network Control Protocol of PPP,

bridge packets may not be exchanged until PPP has reached the net-

work layer protocol phase.

3.1 APPLICATIONS

In situations where a routed network requires connectivity to a remote

Ethernet network, the interface on a router can be conﬁgured as a PPP

IP Half Bridge. The serial line to the remote bridge functions as a Virtual

Ethernet interface, effectively extending the routers serial port connec-

tion to the remote network.The bridge device sends bridge packets

(BPDU's) to the router's serial interface.The router will receive the layer

three address information and will forward these packets based on its IP

address.

Figure 1 shows a typical Cisco router with a serial interface conﬁgured

as a PPP Half Bridge.The router serial interface uses a remote device

that supports PPP bridging to function as a node on the remote Ethernet

network.The serial interface on the Cisco will have an IP address on the

same Ethernet subnet as the bridge.

Figure 1.

Cisco router with serial interface, conﬁgured as PPP Half Bridge.

For example, the customer site is assigned the addresses 192.168.1.0/

24 through 192.168.1.1/24.The address 192.168.1.1/24 is also the

default gateway for the remote network.The above settings remove any

routing/forwarding intelligence from the CPE.The associated Cisco con-

ﬁguration will set serial interface (s0) to accommodate half bridging for

the above example.

Authentication is optional under PPP. In a point-to-point leased-line link,

incoming customer facilities are usually ﬁxed in nature, therefore authen-

tication is generally not required.If the foreign device requires authenti-

cation via PAP or CHAP, the PPP software will respond with default

Peer-ID consisting of the units Ethernet MAC address and a password

which consists of the unit’s Ethernet MAC address.

Some networking systems do not deﬁne network numbers in packets

sent out over a network. If a packet does not have a speciﬁc destination

network number, a router will assume that the packet is set up for the

local segment and will not forward it to any other sub-network. However,

in cases where two devices need to communicate over the wide-area,

bridging can be used to transport non-routable protocols.

Figure 2 illustrates transparent bridging between two routers over a

serial interface (s0). Bridging will occur between the two Ethernet Inter-

faces on Router A (e0 and e1) and the two Ethernet Interfaces on Router

B (e0 and e1).

Figure 2.

Transparent bridging between two routers over a serial link.

4.0 INSTALLATION

The 2124/2130 is equipped with Network, DTE, and power interfaces.

This section brieﬂy describes connnection to each interface.

4.1 CONNECT TO 10BASET ETHERNET PORT

The shielded RJ-45 Ethernet port on the Model 2124/2130 is designed to

connect directly to a 10BaseT network. Figure 3 shows the 10BaseT RJ-

45 port pin description.You may make connections up to 300 feet using

type 4 or 5 cable.

Figure 3.

Model 2124/2130 Ethernet connector pinout

Connect the 10BaseT Ethernet Port to a Hub

The Model 2124/2130 10BaseT interface is conﬁgured as DTE (Data

Terminal Equipment).Use the diagram below to construct a cable to con-

nect the 2124/2130 to a 10BaseT Hub.

Connect the 10BaseT Ethernet Port to a PC (DTE)

The Model 2124/2130 10BaseT interface is conﬁgured as DTE (Data

Terminal Equipment).To connect the 2124/2130 to another DTE such as

a 10BaseT network interface card in a PC, construct a 10BaseT cross-

over cable as shown in the diagram below.

4.2 POWER CONNECTION

The Model 2124/2130 offers either an AC or DC power supply.

The 2124/2130 provides a strap selectable power supply.

AC Power Supply (100-240VAC)

The Model 2124/2130 uses a 5VDC, 2A universal input 100-240VAC,

power supply (center pin is +5V).The universal input power supply is

equipped with a male IEC-320 connector.This power supply connects to

the Model 2124/2130 via a barrel jack on the rear panel.A variety of

international power cords are available for the universal power supply.

The Model 2124/2130 powers up as soon as it is plugged into an AC out-

let.The unit does not have a power switch.

The 2124/2130 is factory set to be used with the AC power supply.

Note

Default setting has strap on position 7 and 8 on J3 for AC power

supply. See Figure 4 below.

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