Patton electronics IM2RC/I-100B User manual

USER

MANUAL

MODEL IM2RC/I-100B

Ethernet Bridge Module

SALES OFFICE

(301) 975-1000

TECHNICAL SUPPORT

(301) 975-1007

Part# 07MIM2RC-I100B-UM

Rev. A

Revised 11/26/10

1.0 Warranty Information ................................................................. 3

1.1 Service.......................................................................................... 3

1.2 Safety When Working With Electricity .......................................... 4

2.0 General Information.................................................................... 6

2.1 Features........................................................................................ 6

2.2 Description.................................................................................... 6

2.3 Typical Application........................................................................ 7

3.0 PPP Operational Background.................................................... 8

3.1 Applications .................................................................................. 8

4.0 Configuration ............................................................................ 10

4.1 Connecting the Interface Driver Board ....................................... 11

5.0 Installation................................................................................. 12

5.1 The Model 1001R14 rack chassis .............................................. 12

The Rack Power Supply............................................................. 12

5.2 Installing the Rear IM2RC/I-100B Card and Front Function Card...

5.3 Connecting to the 10/100Base-T Ethernet port.......................... 14

5.4 Connecting the Line Interface..................................................... 15

6.0 Operation................................................................................... 16

6.1 Operating Instructions................................................................. 16

6.2 Power-Up.................................................................................... 16

6.3 LED status Monitors ................................................................... 16

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

A.1 LAN Connection ......................................................................... 17

A.2 Line Connection .......................................................................... 17

A.3 Protocol ....................................................................................... 17

A.4 MAC Address Aging ................................................................... 17

A.5 On-Board Memory ...................................................................... 17

A.6 Interface ...................................................................................... 17

A.7 LED Indicators ............................................................................ 17

A.8 Power Consumption .................................................................... 17

A.9 Temperature Range .................................................................... 17

A.10 Dimensions ................................................................................. 17

1.0 WARRANTY INFORMATION

Patton Electronics warrants all Model IM2RC/I-100B 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 the 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 performs 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 spe-

cifically disclaims all other warranties, expressed or implied, and the

installation or use of this product shall be deemed an acceptance of

these terms by the user.

1.1 SERVICE

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

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

als Authorization number on the outside of the shipping container. This

number may be obtained from Patton Electronics Technical Services at:

•Tel:+1 (301) 975-1007

•Email:support@patton.com

• URL: http://www.patton.com

Note Packages received without an RMA number will not be

accepted.

1.2 SAFETY WHEN WORKING WITH ELECTRICITY

• Do not open the device when the power cord is con-

nected. For systems without a power switch and

without an external power adapter, line voltages

are present within the device when the power cord

is connected.

• For devices with an external power adapter, the

power adapter shall be a listed Limited Power

Source The mains outlet that is utilized to power

the device shall be within 10 feet (3 meters) of the

device, shall be easily accessible, and protected

by a circuit breaker in compliance with local regu-

latory requirements.

• For AC powered devices, ensure that the power

cable used meets all applicable standards for the

country in which it is to be installed.

• For AC powered devices which have 3 conductor

power plugs (L1, L2 & GND or Hot, Neutral &

Safety/Protective Ground), the wall outlet (or

socket) must have an earth ground.

• For DC powered devices, ensure that the intercon-

necting cables are rated for proper voltage, cur-

rent, anticipated temperature, flammability, and

mechanical serviceability.

• WAN, LAN & PSTN ports (connections) may have

hazardous voltages present regardless of whether

the device is powered ON or OFF. PSTN relates to

interfaces such as telephone lines, FXS, FXO, DSL,

xDSL, T1, E1, ISDN, Voice, etc. These are known

as “hazardous network voltages” and to avoid

electric shock use caution when working near these

ports. When disconnecting cables for these ports,

detach the far end connection first.

• Do not work on the device or connect or disconnect

cables during periods of lightning activity.

WARNING

This device contains no user serviceable parts. This device can

only be repaired by qualified service personnel.

This device is NOT intended nor approved for connection to the

PSTN. It is intended only for connection to customer premise

equipment.

Electrostatic Discharge (ESD) can damage equipment and impair

electrical circuitry. It occurs when electronic printed circuit cards

are improperly handled and can result in complete or intermittent

failures. Do the following to prevent ESD:

• Always follow ESD prevention procedures when removing and

replacing cards.

• Wear an ESD-preventive wrist strap, ensuring that it makes

good skin contact. Connect the clip to an unpainted surface of

the chassis frame to safely channel unwanted ESD voltages

to ground.

• To properly guard against ESD damage and shocks, the wrist

strap and cord must operate effectively. If no wrist strap is

available, ground yourself by touching the metal part of the

chassis.

In accordance with the requirements of council direc-

tive 2002/96/EC on Waste of Electrical and Electronic

Equipment (WEEE), ensure that at end-of-life you sepa-

rate this product from other waste and scrap and deliver

to the WEEE collection system in your country for recy-

cling.

WARNING

CAUTION

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

One Year parts and labor. If any questions arise during installation or use

of this product, please contact Patton Electronics Technical Support at:

(301) 975-1007.

2.1 FEATURES

• Installs in Patton’s NetLink Rack Systems

• Provides MAC level connection between two peered Ethernet LANs

• RJ-45 line connection

• Operates transparently to higher level protocols such as TCP/IP,

DECnet, NETBIOS and IPX

• PPP (RFC 1661) with Bridging Control Protocol (RFC 1638)

• No configuration necessary

• Automatically discovers, loads and deletes MAC addresses

• Modular 10/100Base-T connection (RJ-45)

• Two LED indicators: status & link integrity

2.2 DESCRIPTION

The Patton IM2RC/I-100B, Ethernet Bridge Module installs in the NetLink

Rack system to provide seamless Ethernet LAN extension. The Patton

IM2RC/I-100B performs the bridging function between two physically

separate Ethernet LANs at the MAC level. Operation of the Patton

IM2RC/I-100B is transparent to higher network level protocols such as

TCP/IP, DECnet, NETBIOS and IPX. The Model IM2RC/I-100B is 802.3

compliant and supports PPP (RFC 1661) with Bridging Control Protocol

(RFC 1638).

Once installed in the local Patton NetLink rack, the Patton IM2RC/I-100B

works in a “plug and play” manner to forward LAN broadcasts, multicasts

and frames destined for the peered Ethernet LAN at the remote end (the

Patton base unit at the remote end must be equipped with an IM1/I mod-

ule). Using the Patton IM2RC/I-100B in conjuction with a G.SHDSL front

card (3088RC) or NTU (2701RC), peered Ethernet LANs can be linked

over leased 2-wire or E1 circuits. The NTU features externally-accessible

DIP switches, loopback diagnostics, SNMP/HTTP remote-management

capabilities using RocketLink Plug ‘n’ Play, as well as in-band manage-

ment.

2.3 TYPICAL APPLICATION

The Model IM2RC/I-100B is designed to plug directly into the rear of a

Patton Electronics rack card modem (i.e. Model 3088RC or 2701RC).

The Model IM2RC/I-100B is designed to be used as one of a pair of

units. Figure 1 (below) illustrates a typical Model IM2RC/I-100B installa-

tion.

Figure 1. Typical Model IM2RC/I-100B application

4.6 Mbps

Leased Line

(Model 3088RC or 2701RC)

Rack-Mounted Ethernet

WAN Bridge Module

Remote/Satellite

Office

Patton Model 3088

LAN

Corporate

Headquarters

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 router can be configured as a PPP IP

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

Ethernet interface, effectively bridge functions as a Virtual Ethernet inter-

face, effectively extending the routers serial port connection to the

remote network. The bridge devicesends 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 2 on page 9 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 functions 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 2. Cisco router with serial interface, configured as PPP Half Bridge

For example, the customer site is assigned the addresses 192.168.1.1

through 192.168.1.254. The address 192.168.1.1 is also the default

gateway for the remote network. The above settings remove any routing/

forwarding intelligence from the CPE. The associated Cisco configura-

tion 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. The IM2RC/I-100B does not require

authentication. It also does not respond to authentication requests.

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 3 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 3. Transparent bridging between two routers over a serial link.

4.0 CONFIGURATION

The Model IM2RC/I-100B module plugs into Patton’s 3088RC and

2701RC modems to provide Ethernet LAN extension. The IM2RC/I-

100B has no switches or jumpers and does not need to be configured.

However, factors such as the type of medium, throughput across the link

and clocking mode must be determined by the settings of the baseband

modems. Please refer to your baseband modem (i.e. 3088RC and

2701RC) to make the following settings.

1. Bit Rate: The DTE rate setting of your base unit corresponds to the

throughput of your IM2RC/I-100B bridge module. Use higher speeds

to allow maximum throughput to your extended LAN. Use lower

speeds to limit the access of your extended LAN.

Note The IM2RC/I-100B only supports synchronous speeds.

2. Clocking Mode: Set the clocking modes on the base units so that

one unit is configured for Internal clocking mode and the other unit is

set for Receive Recover clocking mode.

3. When using the IM2RC/I-100B, DISABLE, the “Enable Loop from

DTE” Switch on the front function card (3088RC or 2701RC).

4. All other base unit settings depend upon your application and on the

application medium (twisted pair or coaxial cable).

BASE UNIT CLOCK MODES

Unit “A” Unit “B”

Internal Clock Setting Receive/Recover Clock Setting

Note Unit “A” and Unit “B” are arbitrarily chosen. It does not mat-

ter which unit is “A”, and which is “B”.

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