BDCOM 2611 Router's Hardware Installation Manual

BDCOM 2611 Router’s Hardware Installation Manual

Table of Contents

Table of Contents

Chapter 1 BDCOM 2611 Modularized Router ...................................................................................................................... 1 1.1 Standard Configuration.......................................................................................................................................... 1 1.2 Characteristic Parameters of the Router ............................................................................................................... 3 1.3 ROHS Description ................................................................................................................................................. 4

Chapter 2 Installation Preparation ........................................................................................................................................ 5 2.1 Cautions ................................................................................................................................................................ 5 2.2 Safety Advice......................................................................................................................................................... 5

2.2.1 Safety Principles........................................................................................................................................ 5 2.2.2 Safety Notices ........................................................................................................................................... 5 2.2.3 Safety Principles for Live Working............................................................................................................. 6 2.2.4 Electrostatic Discharge Prevention ........................................................................................................... 6

2.3 Requirements for Common Locations ................................................................................................................... 7 2.3.1 Environment .............................................................................................................................................. 7 2.3.2 Location Configuration Prevention ............................................................................................................ 7 2.3.3 Cabinet Configuration................................................................................................................................ 7 2.3.4 Power Requirements................................................................................................................................. 8

2.4 Installation Tools and Device ................................................................................................................................. 8

Chapter 3 Router Installation ................................................................................................................................................ 9 3.1 Installation Procedure of BDCOM 2611 Router..................................................................................................... 9 3.2 Installing Router’s Machine box ............................................................................................................................ 9

3.2.1 Installing the Machine box on the Desk................................................................................................... 10 3.2.2 Installing the Machine box on the Cabinet .............................................................................................. 10

3.3 Connecting the Port............................................................................................................................................. 10 3.3.1 Connecting the Console Port .................................................................................................................. 10 3.3.2 Connecting Fast-Ethernet Interface ........................................................................................................ 12 3.3.3 Connecting Hi-Speed Serial Interface..................................................................................................... 14

3.4 Network Interface Card........................................................................................................................................ 19

Chapter 4 Router Maintenance........................................................................................................................................... 21 4.1 Opening the Machine box ................................................................................................................................... 21 4.2 Memory Upgrade................................................................................................................................................. 22

4.2.1 SDRAM Installation Method .................................................................................................................... 22 4.2.2 Expanding FLASH................................................................................................................................... 24

4.3 Closing Machine Box........................................................................................................................................... 25

Chapter 5 Hardware Fault Analysis .................................................................................................................................... 26 5.1 Fault Separation .................................................................................................................................................. 26

5.1.1 Faults Relative with Power and Cooling System..................................................................................... 26 5.1.2 Faults Relative with Port, Cable and Connection .................................................................................... 26

5.2 Indicator Description............................................................................................................................................ 26

- I -


Chapter 1 BDCOM 2611 Modularized Router The document describes the characteristics and parameters of BDCOM 2611 router and gives an overview of BDCOM 2611 router.

1.1 Standard Configuration

BDCOM 2611 router has four kinds of ports: two fast-Ethernet ports, one console port, one AUX port and one double-serial port. For details, see table 1-1.

Table 1-1 Attributes of the accessory port

Port Attribute

fast-Ethernet port A 10/100M auto-adaptable UTP (RJ45) port with LINK/ACT 100Mbps indicators

Console port An RJ45 port with a rate of 1200bps to 115200bps, which has no indicators

AUX port An RJ45 port with a rate of 1200bps to 57600bps, which has no indicators

Hi-speed serial port It is a DB60 port with a rate of 64000bps to 2048000bps.

There are also two interface card slots, one power socket, one power on-off, one grounding column, one ventilation hole and one long-shape ventilation hole.

The front template of the BDCOM 2611 modularized router is shown the following figure:

Table 1-2 Parts at the front template of BDCOM 2611 router

No. Abbrev. Name Description

1 PWR Power indicator It is on when the router is powered.

2 SYS System indicator It is on after the system is successfully started.

3 S0 Indicator of accessory slot 0

It is on if the necessary slot validates.

4 S1 Indicator of slot 1 It is on if slot 1 has the interface card.

- 1 -

BDCOM 2611 Router’s Hardware Installation Manual The back template of BDCOM 2611 modularized router is shown in the following figure:

Table 1-3 Parts at the back template of BDCOM 2611 modularized router

No. Abbrev. Name Description 1 AC power socket AC100-240V

2 Power Power on-off Pressing upward means opening power, while pressing downward means cutting off the power.

3 Grounding column The grounding must be fine.

4 CON Console port

5 AUX AUX port

6 100M Ethernet 100M indicator It is on when the Ethernet 10/100M port works in the 100M mode.

7 LINK Indicator for valid connection of the Ethernet 10/100M port

It is on when Ethernet connects HUB effectively through twisted pair.

8 ACT Ethernet 10/100M data indicator It flickers when data is transmitted or received on the Ethernet port.

9 TP Ethernet 10/100M twisted-pair port It connects LAN through the twisted pair.

10 SLOT1 Slot 1 for interface card

It supports the following cards: the single serial-interface card, single Ethernet card, double serial-interface card, combo card (single Ethernet card and single serial interface card), asynchronous 8-path card, single-path ISDN BRI S/T card, DUT interface card, single-path

- 2 -

BDCOM 2611 Router’s Hardware Installation Manual ISDN U card and single-path Modem card.

11 SERIAL 0-1 Hi-speed serial port It is a DB60 port with a rate of 64000bps to 2048000bps.

The back template of BDCOM 2611-DC router is shown in the following figure:

1.2 Characteristic Parameters of the Router

The following table shows the characteristic parameters of BDCOM 2611 modularized router (BDCOM2611, BDCOM 2611-DC):

Memory

EPROM：512K Bytes；

Flash Memory：8~32M Bytes；

SDRAM：64MBytes；

Standard configuration

Two fast-Ethernet 10/100M ports

One Console port

One AUX port

Two hi-speed serial ports

One network interface card slot

Specifications 445mm× 3 10mm×45mm

Working temperature/humidity

0℃-40℃; 10%-85%; no condensation

Storage temperature/ humidity

-20℃-65℃; 5%-95%; no condensation

Power consumption Up to 50W

AC power

Input voltage:100-240V Input frequency: 50-60Hz

Input current: 1.2A

Hardw

are characteristics

Power characteri

stics DC power Input voltage: -72V to -36V (DC)

Input current: 1.5A

Note:

BDCOM 2611-DC uses the DC power.

- 3 -


1.3 ROHS Description

- 4 -


Chapter 2 Installation Preparation

2.1 Cautions

Similar to other electronic products, the semiconductor chip easily gets damaged if you power on and off abruptly and frequently. To restart up the router of BDCOM 2611, you have to open the power on-off after the power is cut down for three to five seconds.

Avoid severe collision or falling down from the height to protect the parts in the router.

Use correct outside ports to connect the router of BDCOM 2611. Do not insert the telephone plug (4-line RJ11 plug) into the Ethernet twisted-pair port or the console port (RJ45 8-line socket); do not insert the Ethernet twisted-pair plug into the console port. Similarly, do not insert the console cable into the Ethernet twisted-pair port (RJ45 8-line socket).

Note:

1) When you plug or dial out the power line, keep the power line horizontal with the power socket.

2) When the lifetime of our products ends, handle them according to national laws and regulations, or send these products to our company for collective processing.

2.2 Safety Advice

2.2.1 Safety Principles

Keep dustless and clean during or after the installation.

Put the cover at the safe place.

Put tools at the right place where they are not easily falling down.

Put on relatively tight clothes, fasten the tie or scarf well and roll up the sleeve, avoiding stumbling the machine box.

Put on the protective glasses if the environment may cause damage to your eyes.

Avoid incorrect operations that may cause damage to human or devices.

2.2.2 Safety Notices

Read the installation guide carefully before you operate the system.

Only professionals are allowed to install or replace the router.

- 5 -

BDCOM 2611 Router’s Hardware Installation Manual Pull out the AC power socket and close the direct-current power before

operating on the machine box or working beside the power source.

The final configuration of products must comply with relative national laws and regulations.

2.2.3 Safety Principles for Live Working

Put off ornaments, such as ring, necklace, watch and bracelet, before you operate under live working. When metal articles connect the power to the ground, short circuit happens and components may be damaged.

Pull out the AC power socket and close the direct-current power before operating on the machine box or working beside the power source.

When the power is on, do not touch the power.

Correctly connect the device and the power socket.

Only professionals are allowed to operate and maintain the device.

Read the installation guide carefully before the system is powered on.

Note:

1) Check potential dangers, such as the humid floor, ungrounded extensible power line and tatty power line.

2) Install the emergent on-off at the working room for turning off the power when trouble happens.

3) Turn off the power on-off of the router and plug off the power line before installing or uninstalling the machine box or working beside the power.

4) Do not work alone if potential dangers exist.

5) Cut off the power before checkout.

6) If trouble happens, take the following measures:

A. Cut off the system’s power.

B. Alarm

C. Take proper measures to help persons who are hit by the disaster. Artificial respiration is needed if necessary.

D. Seek for medical help, or judge the loss and seek for available help.

2.2.4 Electrostatic Discharge Prevention

Electrostatic discharge may damage devices and circuits. Improper treatment may cause the router to malfunction completely or discontinuously.

- 6 -

BDCOM 2611 Router’s Hardware Installation Manual Move or locate the devices according to the measures of electrostatic discharge prevention, ensuring the machine box connects the ground. Another measure is to wear the static-proof hand ring. If there is no hand ring, use the metal clip with the metal cable to clip the unpainted metal part of the machine box. In this case, the static is discharged to the ground through the metal cable of the clip. You can also discharge the static to the ground through your body.

2.3 Requirements for Common Locations

This part describes the requirements for the installation locations.

2.3.1 Environment

The router can be installed on the desk or the cabinet. The location of the machine box, cabinet planning and indoor cabling are very important for normal system’s function. Short distance between devices, bad ventilation and untouchable control plate will cause maintenance problems, systematic faulty and breakdown.

For location planning and device locating, refer to section 2.3.2 “Location Configuration Prevention”.

2.3.2 Location Configuration Prevention

The following preventive measures assist you to design the proper environment for the router.

Make sure that the workshop is well-ventilated, the heat of electrical devices is well-discharged and sufficient air circulation is provided for device cooling.

Avoid to damage devices by following the electrostatic discharge prevention procedure.

Put the machine box at the place where cool air can blow off the heat inside the machine box. Make sure the machine box is sealed because the opened machine box will reverse the cool air flow.

2.3.3 Cabinet Configuration

The following content assists you to make a proper cabinet configuration:

Each device on the cabinet gives off heat when it runs. Therefore, the sealed cabinet must have the heat-discharge outlet and the cooling fan. Do not put the devices too close, avoiding bad ventilation.

When you install the machine box at the open cabinet, prevent the frame of the cabinet from blocking the airway of the machine box.

Ensure that nice ventilation is provided for the devices installed at the bottom of the cabinet.

The clapboard separates exhaust gas and inflow air, and boost the cool air to flow in the machine box. The best location of the clapboard is decided by the air

- 7 -

BDCOM 2611 Router’s Hardware Installation Manual flow mode in the machine box, which can be obtained through different location tests.

2.3.4 Power Requirements

Make sure that the power supply has nice grounding and the power at the input side of the router is reliable. The voltage control can be installed if necessary. At least a 240 V, 10A fuse or a breaker is provided in the phase line if you prepare the short-circuit prevention measures for a building.

Caution:

If the power supply system does not have good grounding, or the input power disturbs too much and excessive pulses exist, the error code rate of communication devices increases and even the hardware system will be damaged.

2.4 Installation Tools and Device

The tools and devices to install the router are not provided. You need to prepare them yourself. The following are the tools and devices needed for the typical installation of the router:

Screwdriver

Static armguard

Bolt

Cable for LAN connecting WAN

HUB or PC with Ethernet card

Control terminal

MODEM

- 8 -


Chapter 3 Router Installation

Caution:

Only professionals are allowed to install or replace the devices of the router.

3.1 Installation Procedure of BDCOM 2611 Router

3.2 Installing Router’s Machine box

The machine box of the router can be installed on the desk or can be fixed to other cabinets.

Installing the Machine box on the Desk

Installing the Machine box on the Cabinet

- 9 -


3.2.1 Installing the Machine box on the Desk

BDCOM 2611 router can be directly put on the smooth and safe desk.

Note:

Do not put things weighing 4.5 kg or over 4.5 kg on the top of the router.

3.2.2 Installing the Machine box on the Cabinet

The machine box of the router is fixed on the cabinet through the brackets. When you fix the brackets, the front template of the router faces forward. The detailed operations are shown in the following figure.

After the brackets are installed, install the router on the cabinet. See the following figure:

3.3 Connecting the Port

3.3.1 Connecting the Console Port

BDCOM 2611 modularized router has one console port and one remote assistant console port.

- 10 -


1. Console port

The console port has a rate of 1200bps to 115200bps and a standard RJ45 plug, the parity check is an option for the console port and the flow on the console port can be controlled. Before configuring and monitoring the router, you must connect the console port and the terminal (such as STAR-510G+) or PC’s serial port through specific monitor cable and then run terminal imitation software (Windows super-terminal). The cable is provided according to the host. The communication parameters of the terminal serial port can be set to a rate of 9600bps, eight data bits, one stop bit, no sum check bit and traffic control.

The RJ45 connector of the console port is shown in the following figure. The RJ45 plug corresponds to the RJ45 socket, whose pins can be aligned from left to right with the value from 1 to 8.

The following figure shows how to connect the console port of BDCOM 2611 modularized router and the computer:

Definition of the pins of the console port:

No. Name Symbol Remarks

1 Carrier Detecting CD It is used to connect the Modem.

2 Data receiving RXD Input

3 Data-line device ready DSR It is used to connect the Modem.

4 Data transmitting TXD Output

5 Transmission requesting

RTS It is used to connect the Modem.

7 Data terminal ready DTR It is used to connect the Modem.

- 11 -


8 Signal ground SG

The cable is used to connect the console port of the BDCOM 2611 modularized router and the outside console terminal device. One end of the cable is a 8-pin RJ45 plug and the other end is a 9-hole plug (DB9). The inner line connection in the cable is shown in figure 3-1. The console cable is numbered as RLC0301.

Figure 3-1 RLC0301 inner line connection

3.3.2 Connecting Fast-Ethernet Interface

The 10/100M auto-adaptation Ethernet port provides the UTP (RJ45) interface and has the 100M link/ACT indicators. The 10/100M auto-adaptation Ethernet port can be connected to the UTP port of the router and then to HUB through the twisted pair. The numbering order of the pins in the UTP port is the same as the console port.

Figure 3-2 Pin numbering of the RJ45 port

- 12 -


1. Connecting the 10/100Mbps auto-adaptation Ethernet port and HUB

2. Pins of the UTP port

No. Name Symbol Remarks

1 Sending the normal phase of the data

TPTXD+ Output

2 Sending the paraphase of the data

TPTXD- Output

3 Receiving the normal phase of the data

TPRXD+ Input

6 Receiving the paraphase of the data

TPRXD- Input

3. Outside line connection of the 10/100M auto-adaptation Ethernet port of BDCOM 2611 router

The UTP port can be connected to the HUB through five-class twisted pair. The line connection is shown in the following figure:

Note: The color arrangement of UTP connection complies with EIA/TIA 568A.

- 13 -

BDCOM 2611 Router’s Hardware Installation Manual You can use the UTP intersection cable when Ethernet ports of two BDCOM 2611 routers connect. The UTP intersection cable can also be used to directly connect a router and a UTP port of a single host. Hence, a HUB can be saved during network connection. However, HUB must be used when more than two Ethernet UTP ports are interconnected. See the following figure for UTP connection:

Note: The color arrangement of UTP connection complies with EIA/TIA 568A.

3.3.3 Connecting Hi-Speed Serial Interface

The hi-speed serial interface supports V.24/V.28(EIA/TIA-232) and V.35 physical-layer protocols and provides the DB60 port. You can select the corresponding cable and specific devices to connect it.

The serial interface has its corresponding communication distance limitation at any rate. In general, the lower the communication rate is, the farther the communication distance is. All serial-interface signals have distance limitation. If the regulated distance is exceeded, the signal attenuates rapidly or even loses completely. The following table shows the corresponding rate and distance limitation of different types of interfaces.

Rate and transmission distance of cable V.24/V.28(EIA/TIA-232):

Baud Rate (bps) Maximum Transmission Distance (m)

2400 60

4800 30

9600 15

19200 15

38400 15

57600 8

64000 8

115200 8

Rate and transmission distance of V.35 cable:

Baud Rate (bps) Maximum Transmission Distance (m)

2400 1250

4800 625

9600 312

- 14 -


19200 156

38400 78

56000 31

64000 20

2M 12

The V.28/V.35 synchronous/asynchronous serial port can run as DTE or DCE. Table 3-1 shows the attributes of the V.28/V.35 synchronous/asynchronous serial port.

Table 3-1 Attributes of the V.28/V.35 synchronous/asynchronous serial port

Description Attribute

Synchronous Asynchronous

Connector DB60, 60-pin and 4-row plug-in DB60, 60-pin and 4-row plug-in

Cable DB60-V28 cable DB60-35 cable DB60-V28 cable

Interface standard V.24/V.28(EIA/TIA-232) V．35 V.24/V.28(EIA/TIA-232)

Maximum baud rate (bps) 128K 2M 115．2K

Supported protocol X.25、X.32、FR、HDLC、SLIP、PPP、SDLC PPP、SLIP

Figure 3-3 shows the line connection between V.28/V.35 synchronous/asynchronous serial port and exterior device.

Figure 3-3 Line connection between V.28/V.35 synchronous/asynchronous serial port and exterior device

The V.28/V.35 synchronous/asynchronous serial port adopts the 60-pin DB60 connector. One DB60 interface supports two synchronous/asynchronous serial ports.

Table 3-1 Pins of the DB60 serial port

- 15 -


No. Pin name Symbol Remarks

3 2nd group of carrier detection J1CD DTE ← DCE, applied to V28 and V35

4 2nd group of data-line device ready

J1DSR DTE ← DCE, applied to V28 and V35

5 2nd group allowable to be transmitted

J1CTS DTE ← DCE, applied to V28 and V35

6 2nd group of data received J1RxD DTE ← DCE, applied to V28

7 2nd group of ports transmitting the clock

J1TxC DTE ← DCE, applied to V28

8 2nd group of ports receiving the clock

J1RxC DTE ← DCE, applied to V28

9 2nd group of inner clock outputting

CLK232-1 DTE → DCE, applied to V28

10 2nd group of inner clock outputting


11 2nd group of data transmitting J1TXD DTE → DCE, applied to V28

12 2nd group requesting to be transmitted

J1RTS DTE → DCE, applied to V28 and V35

13 2nd group of data terminals ready

J1DTR DTE → DCE, applied to V28 and V35

15 Signal ground GND Signal ground for DTE and DCE together

17 1st group sending the normal phase of the data

TXD0+~ DTE → DCE, applied to V35

18 1st group sending the normal phase of the data

TXD0-~ DTE → DCE, applied to V35

19 1st group of interior clocks exporting the normal phase

ECLK0A+~ DTE → DCE, applied to V35

20 1st group of interior clocks exporting the paraphase

ECLK0A-~ DTE → DCE, applied to V35

21 1st group of interior clocks exporting the normal phase

ECLK0B+~ DTE → DCE, applied to V35

22 1st group of interior clocks exporting the paraphase

ECLK0B-~ DTE → DCE, applied to V35

23 1st group transmitting the normal phase of the clock

TXC0+ DTE ← DCE, applied to V35

24 1st group sending the paraphase of the clock

TXC0- DTE ← DCE, applied to V35

25 1st group receiving the normal phase of the clock

RXC0+ DTE ← DCE, applied to V35

26 1st group receiving the paraphase of the clock

RXC0- DTE ← DCE, applied to V35

27 1st group receiving the normal phase of the data

RXD0+ DTE ← DCE, applied to V35

28 1st group receiving the RXD0- DTE ← DCE, applied to V35

- 16 -

BDCOM 2611 Router’s Hardware Installation Manual paraphase of the data

29 2nd group of interior clocks exporting the normal phase

ECLK1B+~ DTE → DCE, applied to V35

30 2nd group of interior clocks exporting the paraphase

ECLK1B-~ DTE → DCE, applied to V35

31 2nd group of interior clocks exporting the paraphase

ECLK1A-~ DTE → DCE, applied to V35

32 2nd group of interior clocks exporting the normal phase

ECLK1A+~ DTE → DCE, applied to V35

33 1st group of carrier detection J0CD DTE ← DCE, applied to V28 and V35

34 1st group of data-line devices ready

J0DSR DTE ← DCE, applied to V28 and V35

35 1st group allowable to be transmitted

J0CTS DTE ← DCE, applied to V28 and V35

36 1st group of data received J0RXD DTE ← DCE, applied to V28

37 1st group of ports transmitting the clock

J0TXC DTE ← DCE, applied to V28

38 1st group of ports receiving the clock

J0RXC DTE ← DCE, applied to V28

39 1st group of interior clocks outputting


40 1st group of interior clocks outputting


41 1st group of data transmitting J0TXD DTE → DCE, applied to V28

42 1st group requesting to be transmitted

J0RTS DTE → DCE, applied to V28 and V35

43 1st group of data terminals ready

J0DTR DTE → DCE, applied to V28 and V35


47 2nd group sending the normal phase of the data

TXD1+~ DTE → DCE, applied to V35


49 1st group of port mode selecting

PORTMODE0 DTE ← DCE, used to select V28 and V35

50 2nd group sending the paraphase of the data

TXD1-~ DTE → DCE, applied to V35


53 2nd group sending the normal phase of the clock

TXC1+ DTE ← DCE, applied to V35

54 2nd group sending the paraphase of the clock

TXC1- DTE ← DCE, applied to V35

- 17 -


55 2nd group receiving the normal phase of the clock

RXC1+ DTE ← DCE, applied to V35

56 2nd group receiving the paraphase of the clock

RXC1- DTE ← DCE, applied to V35

57 2nd group sending/receiving the normal phase of the data

RXD1+ DTE ← DCE, applied to V35

58 2nd group sending/receiving the paraphase of the data

RXD1- DTE ← DCE, applied to V35

60 2nd group of port mode selecting

PORTMODE1 DTE ← DCE, used to select V28 and V35

The 1-to-2 cable matches the DB60 Asyn/Syn serial port and is used to connect outside devices. The 1-to-2 cable has three types: 1-to-2 straight-through V.28 cable (RCLS101), 1-to-2 straight-through V.35 cable (RLS0111) and 1-to-V.28&V.35 straight-through V.35 cable (RCLS002).

The appearance of the 1-to-2 straight-through V.28 cable (RCLS101) shown in figure 3-4.

Figure 3-4 Appearance of the 1-to-2 straight-through V.28 cable (RCLS101)

- 18 -


Figure 3-5 Appearance of the 1-to-2 straight-through V.35 cable (RLS0111)

Figure 3-6 Appearance of the 1-to-V.28&V.35 straight-through V.35 cable (RCLS002)

The synchronous/asynchronous serial port can connect DTE or DCE of different connectors through different cable adapters.

3.4 Network Interface Card

BDCOM 2611 modularized router provides one Network Interface Card (NIC) slot which are shown in the following figure.

- 19 -


The following table lists slot-supported NICs:

Note: Do configuration according to the following table and do not incorrectly insert NIC into a slot.

Type of NIC

No. Module ID

Slot1

WIC/VIC Slot

1 Single-path E1 card WIC-1CE1 Yes 2 ISDN BRI S/T interface card WIC-1B-S/T Yes 3 Single serial card WIC-1T Yes 4 Single-path differentiation

serial card WIC-1T-V11 Yes

5 Double-serial-interface card WIC-2T Yes 6 two-path differentiation serial

card WIC-2T-V11 Yes

7 Single Ethernet plus single serial-interface card

WIC-1E1T Yes

8 Single-Ethernet card WIC-1ETH Yes 9 Double-Ethernet card WIC-2ETH Yes 10 8-path asynchronous card EIC-8ASY Yes 11 Single-path asynchronous

Modem card WIC-1AM Yes

12 Two-path UE1 card WIC-2UE1 Yes

13 Single-path UE1 card WIC-1UE1 Yes

14 Single-path T1 card WIC-1CT1 Yes

For the details of each NIC, see Interface Card Installation Manual.

- 20 -


Chapter 4 Router Maintenance

Caution:

Before opening the machine box, make sure that you have released the static you carried and then turn off the power on-off of the router. Before operating any step in Appendix B, read the section “Safety Advice”.

Before performing operations beside the power source or on the machine box, plug out the power cable.

4.1 Opening the Machine box

This section describes how to open the cover of the router, required tools and operation methods.

Caution:

When the power cable still connects the power source, do not touch it.

When you open the cover the router, you may use the following tools:

Crossed screwdriver

Static armguard

Perform the following steps to open the cover of the router:

(1) Turn off the power on-off of the router.

(2) Plug out all cables connected the back of the router.

(3) Take out the bolt from the machine box with the screwdriver.

Note:

The machine box comprises of two parts: cover and bottom.

(4) Open the cover by holding two sides of the cover towards the direction of the arrow key shown in the following figure:

- 21 -


(5) When the cover is opened, put it aside. The main board of the system appears.

Layout of the main board

Note:

After taking off the cover, put it horizontally and avoid it to be crushed or collided. Otherwise, the machine box is hard to install.

4.2 Memory Upgrade

4.2.1 SDRAM Installation Method

If you want to upgrade or replace BDCOM 2611 router, uninstall and install SDRAM according to the following steps:

(1) Turn off the power on-off of BDCOM 2611 router and plug out the power plug.

- 22 -


(2) According to the procedure of opening the machine box of BDCOM 2611 router, uninstall the cover. The system mainboard of the switch appears.

(3) Find the SARAM SIMM slot on BDCOM 2611 router by referring figure 4-1.

(4) According to Figure 4-2, break off the pinchcock at both sides of the SDRAM SIMM slot with the thumb. When the SDRAM bar is taken out from the SDRAM slot, lightly press it to make it spring out from the pinchcock and then plug it out in an angle of 45 degree.

Figure 4-1 Inserting and plugging the SDRAM

Figure 4-2 SDRAM bar

Note:

If the SDRAM slot cannot be broken off, check whether it is locked. Slowly break off the pinchcock at both sides of the SDRAM SIMM slot according to the previous method.

- 23 -

BDCOM 2611 Router’s Hardware Installation Manual (5) After taking off the original SDRAM bar, make the brim of the gold finger of the

SDRAM bar point down. See figure 4-2.

A. Tilt the SDRAM extensible bar to 45 degree and push it into the extensible slot. B. Lightly push it upwards and make two locating steel slices tie the circuit board. C. When uninstalling the two locating steel slices, break off them outwards. At

the same time, push down the SDRAM extensible bar until the circuit board completely breaks away the locating steel slices. Plug out the SDRAM extensible bar in an angle of 45 degree.

(6) After the SDRAM bar is installed, install the machine box according to the procedure of closing the machine box.

4.2.2 Expanding FLASH

The standard configuration of the Flash of BDCOM 2611 router is 8Mbyte and the Flash can be expanded to 32M.

(1) Shut down the power source of BDCOM 2611 modularized router.

(2) Open the machine box of BDCOM 2611 router according to the reverse installation order of BDCOM 2611 router.

(3) Find the Flash socket on BDCOM 2611 router by referring figure 4-1.

(4) If the expanded Flash bar has already been inserted, take the previous expanded Flash bar out first.

A. Tilt the SDRAM extensible bar at 45 degree and push it into the bottom of the extensible slot. B. Lightly push it upwards and make two locating steel slices tie the circuit board. C. When uninstalling the two locating steel slices, break off them outwards. At

the same time, push down the SDRAM extensible bar until the circuit board completely breaks away the locating steel slices. Plug out the SDRAM extensible bar in an angle of 45 degree.

Figure 4-4 Inserting or plugging the extensible FLASH bar

- 24 -


Figure 4-5 Extensible FLASH bar

(5) After the SDRAM bar is installed, install the machine box according to the procedure of closing the machine box.

4.3 Closing Machine Box

The section mainly describes how to put the cover and close the machine box. Do as follows:

(1) Put them well according to their locations and joint them together along their sides.

(2) See the following figure.

(3) When the cover and the bottom are closely tied, let the cover slide the slot of the front template at the bottom.

(4) Nail the bolt and screw it tightly with the screwdriver.

(5) Reinstall the router on the cabinet or the desk.

(6) Reconnect all cables of the switch.

- 25 -


Chapter 5 Hardware Fault Analysis

The part describes how to remove the fault from the router.

5.1 Fault Separation

The key for resolving the systematic faults is to separate the fault from the system. You can compare what the system is doing with what the system should do to detect the fault. You need to check the following subsystems:

Power and cooling systems—power, cable and fan

Port, cable and connection—ports on the front template of the router and the cables connecting these ports

5.1.1 Faults Relative with Power and Cooling System

Do the following checkups to help remove the fault:

When the power on-off is at the “ON” location, check whether the fan works normally. If the fan does not work well, check the fan.

If the srouter is too hot, check whether the air outlet and air inlet are clean and then do relative operations in section “Requirements for Common Locations”. The working temperature of the router is from 0 to 40 Celsius degrees.

If the router cannot be started but the LED indicator is on, check the power.

5.1.2 Faults Relative with Port, Cable and Connection

Do the following checkups to help remove the fault:

Check the cable if the router cannot find the port.

If the power on-off is at the “ON” location, check the power source and the power cable.

If the console port does not work after the system is started up, check whether the console port is set to a baud rate of 9600 bps, eight data bits, no sum check bit, one stop bit and no traffic control.

5.2 Indicator Description

The LED indicator shows that the router is running. The following table shows the indicators of BDCOM 2611 router and their description:

No. Abbrev. Name Description

- 26 -


1 100M Ethernet 100M indicator It is on when the Ethernet 10/100M port works in the 100M mode.

2 ACT Ethernet 10/100M data indicator

It flickers when data is received on the Ethernet port.

3 LINK Indicator for showing the valid connection of Ethernet 10/100M TP port

It is on when the TP port successfully connects HUB through the twisted pair.

Each BDCOM 2611 router has its own indicators, names and description of which can be seen in Interface Card Installation Manual.

- 27 -

Documents

BDCOM 2611 Router's Hardware Installation Manual