3Com 3C16894 4-slot Chassis manual

http://www.3com.com/ 3Com Family Switch 7750 Installation Guide 3C16896 8-slot AC Chassis 3C16897 8-slot DC Chassis 3C16895 7-slot Chassis 3C16894 4-slot Chassis and associated modules Part No. 10016428-AB Published December 2007[...]

3Com Corporation 350 Campus Drive Marlbor ough, MA 01752-3064 Copyright © 2005, 2007 3Com Corporation. All rights r eserved. No part of this documentation may be repr oduced in any form or b y any means or used to make any derivative work (such as translation, transformation, or adaptation) without wr itten permission fr om 3Com Corporation. 3Com [...]

C ONTENTS A BOUT T HIS G UIDE Conventions 5 Related Docum entation 5 S WITCH 7750 C OMPONENTS Switch Chassis 7 Switch Backplane 7 Fabric Module 8 Fabric 32 Submodules 12 I/O Modules 14 Power Module 33 Power Distribution 33 Extern al PoE Power System 33 Fan Assembly 34 Switch 7750 Specifications 35 I NSTALLING T HE S WITCH 7750 Preparing to Install [...]

4 C ONTENTS M AINTAINING S OFTWAR E Upgrading Software 55 Lost Passwords 63 Using the BOO T Menu 63 T ROUBLESHOOTING T r oubleshooting t he Configuration 67 T r oubleshooting Po wer 67 T r oubleshooting the Fan 68 T r oubleshooting t he Modules 68 M AINTAINING H AR DWARE Replacing a Power Module 69 Replacing a Power Supply 70 Replacing I/O Modules [...]

A BOUT T HIS G UIDE This guide describes the 3Com ® Switch 7750 and how to install hardwar e, configure and boot softwar e, and maintain software and har dware. This guide also provides tr oubleshooting and supp ort informatio n for your switch. This guide is intended for qualified Se rvice personnel who are r esponsible for configuring, using, an[...]

6 A BOUT T HIS G UIDE[...]

1 S WITCH 7750 C OMPONENTS The chapter describes the following Switch 7750 components: ■ Switch Chassis ■ Switch Backplane ■ Fabric Module ■ Fabric 32 Submodules ■ I/O Modules ■ Power Module ■ Power Distribution ■ Exter nal PoE Power Syst em ■ Fan Assembly ■ Switch 7750 Specifications Switch Chassis The Switch 7750 is availab le[...]

8 C HAPTER 1: S WITCH 7750 C OMPONENTS Fabric Module There a re thr ee Fabric m odules for the Switch 7750: ■ Fabric 64 (3C16857 or 3C16857R) ■ Fabric 32 (3C16872) ■ PoE Fabric 96 (3C16886) The Fabric 64 and Fabric 32 are not inte rchangeable. Y ou can install the Fabric 32 only in a 4-slot chassis. Y ou can install the Fabric 64 only in the [...]

Fabric Module 9 5 Fan LEDs 6 Power module LEDs 7 I/O module LEDs Figure 3 illustrates the fr ont panel of the Fabric 32. Figure 3 Fabric 32 1 Submodule sl ot 2 Console port 3 Ethernet port 4 Ethernet port LEDs 5 Fan LEDs 6 Power LEDs 7 I/O module LEDs 8 Reset butto n Ta b l e 3 lists Fabric specifications. Submodule Slot The submodule slot in the F[...]

10 C HAPTER 1: S WITCH 7750 C OMPONENTS ■ 4-port 1000BASE-X-GBIC submodule ■ 4-port 10/100/1000BASE-T submodule For more information on these submod ules, see “Fabric 32 Submodules”on page 12 . Fixed Ports The Switch 7750 Fabric modules provide the following fixed p orts: ■ Compact Flash (CF) Port ■ 1000BASE-X-SFP (PoE Fabric 96 only) ?[...]

Fabric Module 11 Console Port The console port is connected to the configuration terminal usin g an RJ-45 connector . Y ou can use the console port for system debugging, configu ration, maintenance, management, and loading application files. The console port can also be connected to a modem for functions such as remote system debugging, configu rat[...]

12 C HAPTER 1: S WITCH 7750 C OMPONENTS Module LEDs The module LEDs show the status of the I/O modules, as described in T able 9. Power LEDs PWR1, PWR2, and PWR3 LEDs show the status of the pow er modules, as described in Ta b l e 10 . Fan LED Fan LEDs show the status of the fan frame, as described in T abl e 11. Reset Button The reset button reset[...]

Fabric 32 Submodules 13 Figure 4 4-Port 1000BASE-X-GBIC Submodu le Ethernet GBIC port 2 Ethernet GBIC port LED Ta b l e 12 describes the 4-port 1000B ASE-X-GBIC submodule LEDs. Ta b l e 13 lists the specifications for each of the 4-port 1000BASE-X-GBIC submodule. 4-Port 10/100/1000BASE-T Submodule The 4-Port 10/100/1000B ASE-T submodul e provides f[...]

14 C HAPTER 1: S WITCH 7750 C OMPONENTS Ta b l e 14 describes the 4-port 10/100/1000BASE-T submodule LEDs . Ta b l e 15 lists specifications of the 4-port 10/100/1000BASE-T submod ule. See “Electrical Port Connector” on page 78 for an illustration of the RJ-45 connector and MDI/MDI-X pinout details. I/O Modules The Switch 7750 provides multiple[...]

I/O Modules 15 ■ Y ou must select I/O module por t cables th at are compatible with each installed I/O module 48-port 10/100BASE-T FE PoE Module The 48-port 10/100BASE-T FE PoE module provides 48 10/100 Mbps aut o-sensing Ether net ports that provide a remote power supply to powered devices Figure 12illustrates the 48-port 10/100B ASE-T FE PoE mo[...]

16 C HAPTER 1: S WITCH 7750 C OMPONENTS 48-port 10/100/1000BASE-T PoE Module The 48-port 10/100/100 0BASE-T PoE modu le provides 48 10/100/1000 Mbps auto-sensing Ether net ports that provide a remote power supply to powered devices. Figure 12illustrates the 48-port 10/1 00/1000BASE-T PoE module. Figure 8 48-port 10/100/1000BASE-T PoE Module Figure [...]

I/O Modules 17 Ta b l e 22 describes the 48-port 10/ 100/1000BASE- T PoE module LEDs. Ta b l e 23 describes the specifications of the 48-port 10/100/1 000BASE-T PoE module. 48-port 10/100BASE-TX FE Module The 48-port 10/100BASE-TX FE module prov ides 48 10/100 Mbps auto-sensing Ethernet electrical ports. Figure 10 illustrates the 48-port 10/100BASE[...]

18 C HAPTER 1: S WITCH 7750 C OMPONENTS Figure 11 illustrates the front panel and LE Ds of the 48-port 10/100BASE-TX FE module. Figure 11 Fr ont Panel of the 48-Port 10/100BASE-TX FE module 1 Ethernet port 2 Ethernet port LED Each 100 Mbps Ethern et port has a green LED, indicating LINK/ACTIVE status. Ta b l e 20 describes the 48-port 10/100BASE-TX[...]

I/O Modules 19 48-port 10/100/1000BASE-T Module The 48-port 10/100/1000 BASE-T module provides 48 10/100/10 00 Mbps auto-sensing Ether net electrical ports. Figure 12 illustrates the 48-port 10/100/1000BASE-T mo dule. Figure 12 48-port 10/100/1000BASE-T Module Figure 13 illustrates the front panel and LEDs of the 48-port 10/100/1000BASE- T module. [...]

20 C HAPTER 1: S WITCH 7750 C OMPONENTS 48-port 100BASE-X S FP Module The 48-port 100BASE-X SFP module provid es 48 100 Mbps full-duplex Ethernet optical ports. Figure 14 illustrates the 48-po rt 100BASE-X SFP module. Figure 14 48-port 48-port 100BASE-X SFP Module Figure 15 illustrates the front panel and LE Ds of the 48-port 100BASE-X SFP module. [...]

I/O Modules 21 Ta b l e 26 lists the cables for the 48-port 100BASE-X (SFP) ports 24-port 100BASE-FX MMF FE Module The 24-port 100BASE-FX MMF FE module provides 24 100 Mbps multi-mode Ethernet optical port ser vice channels. Figure 16 illustrates the 24-port 1 00BASE-FX MMF FE module. Dimensions (L X W) 36 6.7 x 340 mm (14.4 x 13.4 in.) Maximum pow[...]

22 C HAPTER 1: S WITCH 7750 C OMPONENTS Figure 16 24-Port 100BASE-FX MMF FE Module Each 100 Mbps optical port has a green LED, as shown in Figure 17. Figure 17 Fr ont Panel of the 24-Port 100BASE-FX MMF FE Module 1 Ethernet port 2 Ethernet port LED Ta b l e 27 describes the status of the 24-port 100BASE-FX MMF FE module LEDs. The 24-port 100BASE-FX[...]

I/O Modules 23 20-Port 10/100/1000BASE-T Module The 20-Port 10/100/1000BASE-T modu le provides 20 10/100/1000BASE-T auto-sensing Ether net ports. Figure 18 illustrates the 20-Port 10/100/1000B ASE-T Module. Figure 18 20-Port 10/100/1000BASE-T Mod ule Figure 19 illustrates the front panel of the 20-port 10/100/1000BASE-T module. Figure 19 Fr ont Pan[...]

24 C HAPTER 1: S WITCH 7750 C OMPONENTS Ta b l e 30 lists specifications of the 20-port 10/100/1000 BASE-T module. 20-Port 1000BASE- X-SFP Module The 20-port 1000BASE-X- SFP module provides 20 1000 BASE-X fu ll duplex ports and uses an SFP cable. Figure 20 illustrates the 20-po rt 1000BASE-X-SFP module. Figure 20 20-Port 1000BASE-X-SFP Module Figur[...]

I/O Modules 25 1 Ethernet port 2 Ethernet port LED Ta b l e 31 describes the 20-port 1000BASE-X-SFP module LEDs. Ta b l e 32 lists specifications of th e 20-port 1000 BASE-X-SFP module. 12-port 10/100/1000BASE-T and 4-port 1000BASE-X SFP Module The 12-port 10/100/10 00BASE-T and 4-por t 1000BASE-X SFP module provides 12 10/100/1000 BASE-T ports an [...]

26 C HAPTER 1: S WITCH 7750 C OMPONENTS Figure 23 Fr ont Panel of the 12-port 10/100/10 00BASE-T and 4-port 1 000BASE-X SFP Module 1 Ethernet port 2 Ethernet port LED 3 SFP port 4 SFP LED Ta b l e 31 describes the 12-port 10/100/100 0BASE-T and 4-port 1000B ASE-X SFP module LEDs. Ta b l e 34 lists specifications of the 12-port 10/100/1000BASE-T and[...]

I/O Modules 27 Ta b l e 35 lists the cables for the 1000BASE-X (SFP) por ts. 12-port 1000BASE-X SFP and 4-port 10/100/1000BASE-T Module The 12-port 1000BASE-X SFP and 4-port 10/100/10 00BASE-T module provides 12 1000BASE-X SFP ports and 4 10/100/1000BASE-X SFP ports. Figure 24 illustrates the 12-port 1000BASE -X SFP and 4-port 10/100 /1000BASE-T mo[...]

28 C HAPTER 1: S WITCH 7750 C OMPONENTS Figure 24 12-port 1000BASE-X SFP and 4-por t 10/100/1000BASE- T Module Figure 25 illustrates the front panel of the 12-port 1000BA SE-X SFP module. Figure 25 Fr ont Panel of the 12-port 1000BASE- X SFP and 4-port 10/100/1000BASE-T Mo dule 1 SFP port 2 SFP port LED 3 Ethernet port 4 Ethernet port LED Ta b l e [...]

I/O Modules 29 Ta b l e 38 lists the cables for the 1000BASE-X SFP port s. Number of ports 16 Transmission rate 1000 Mbps full duplex (optical/electrical) 10/100 Mbps half-/full-duplex (electrical) Cable and maximum transmission distance Category-5 twisted pair with maximum transmission distance of 100 m (328 ft) Compliance IEEE 802.3 IEEE 802.3u I[...]

30 C HAPTER 1: S WITCH 7750 C OMPONENTS 8-port 1000BASE-X GBIC Module The 8-port 1000BASE-X GBIC module provides 8 external GBIC module ports. A GBIC module is used for each data receiving/transmitting cha nnel. The follo wing modules are available: ■ 3CGBIC91 ■ 3CGBIC92 ■ 3CGBIC97 Figure 26 illustrates the 8-port 1 000BASE-X GBIC module. Fig[...]

I/O Modules 31 Ta b l e 39 describes the 8-Port 1000BASE-X GBIC module LEDs. The cables for each of the supported 8GBIC modules are described inT able 40. Ta b l e 41 describes the specifications of the 8-port 1 000BASE-X GBIC module. 8-port 10/100/1000BA SE-T GE Module The 8-port 10/100/1000BASE- T GE module provides 8 external 10/100/1000 Mbps au[...]

32 C HAPTER 1: S WITCH 7750 C OMPONENTS Figure 28 8-Port 10/100/1000BASE-T GE Module Each port on the 8-port 10/1 00/1000BASE-T GE module has 2 LEDs, as shown in Figure 29 . Figure 29 Fr ont Panel of the 8-Port 10/100/1000BASE-T GE Module 1 Ethernet port 2 Ethernet port LEDs Ta b l e 42 describes the LEDs on the 8- port 10/100/1000BASE-T GE module.[...]

Power Module 33 Power Module Only one AC power module is requir ed for the 4-slot chassis, although two power module slots are pr ovided to implement N+1 redundancy . The 7-slot and 8-slot chass is provides th r ee power module slots to implement N+1 redundancy . However , two power modules are sufficient to power one of these fully loaded Switch 7[...]

34 C HAPTER 1: S WITCH 7750 C OMPONENTS Figure 30 Switch 7750 PoE Power Supply The Switch 7750 supports PoE extern al input power up to 2400 W . Ta b l e 45 describes the capabilities of the Switch 7750 PoE power module. The Switch 7750 provides power through Ethernet po rts on the PoE-supp orted I/O modules, supporting the maximum distance of 100 [...]

Switch 7750 Sp ecificatio ns 35 Figure 31 Fan Assembly Switch 7750 Specifications Ta b l e 46 pr ovides detailed information about features of the Switch 7750. Ta b l e 46 Specifications for the Switch 7750 System Item 4-Slot Chassis 7-Slot Chassis 8-Slot Chassis Dimensions (W x H x D) 436 x 352.8 x 480 mm (17 x 14 x 19 in) 436 x 486.2 x 480 mm (17[...]

36 C HAPTER 1: S WITCH 7750 C OMPONENTS Input voltage AC: 100 V to 240 V, 50 to 60 Hz AC: 100 V to 240 V, 50 to 60 Hz DC: -48 V to -60 V PoE input voltage -46 V to -55 V; 55.0 A Max power consumption (all components installed) 350 W 650 W 800 W Environment temperature and humidity 0 to 40 0 C (32 to 104 0 F) and 10% to 90% T able 46 Specifications [...]

2 I NSTALLING T HE S WITCH 7750 The following sections describe how to prepare and install the components of the Switch 7750: ■ Preparing to Install ■ General Site Requirements ■ Installation Checklist ■ Installing the Chassis ■ Installing the Cabling Rack ■ Installing a Module ■ Installing a Submodule ■ Connecting the Ground W ire [...]

38 C HAPTER 2: I NSTALLING T HE S WITCH 7750 ■ During the installation, wear an antistatic wrist strap and antistatic gloves. See “Static Electricity” on page 39 for additional information on preventing static. WARNING: Follow local safety regulations when performing any operation with the Switch 7750. Follow the related safety information an[...]

Installation Checklist 39 Static Electricity T o prevent damage caused by t he static electricity , ensure that: ■ The equipment is grounded ■ The equipment room is dust-proof ■ Adequate temperature and humid ity conditions are maintained. ■ The operator wears an antistatic wr ist strap while ha ndlin g the modu le. ■ The module is placed[...]

40 C HAPTER 2: I NSTALLING T HE S WITCH 7750 ■ T ools ■ Phillips screwdriver ■ Flat-head screwdriver ■ Antistatic wrist strap ■ Cables ■ Console cable ■ AUX cable ■ Power cord and chassis gr ound wire ■ Interface cabl es for the sele cted interface modu les ■ Equipm ent ■ The switch ■ Ethernet 100BASE- T Hub or LAN switch ?[...]

Installing a Module 41 Installing a Module T o install a module: 1 Wear an antistatic wrist strap. 2 Remove the blanking plate from the chassis slot and save it for future use. 3 Hold the ejector levers of the module with both han ds and push them outward. 4 Align the module with the guides in the chassis and slide it gently into the slot. 5 Push t[...]

42 C HAPTER 2: I NSTALLING T HE S WITCH 7750 Connecting the Ground Wir e T o connect the ground wir e: 1 Wear an antistatic wrist strap. 2 Remove the screw fr om the grounding hole in the switch chassis. 3 Set the ground wir e connector around the gr ounding screw . 4 Fasten the grounding screw in the hole on the chassis. 5 Connect the other end of[...]

Connecting and Configuring Power 43 Connecting DC Power Cords T o connect DC power cords, do the following: 1 Power off all the r elated parts of the switch when connecting the DC power cord. 2 Loosen the mounting screw and remove the cover of t he connection terminals on the DC power distributio n box. 3 Loosen the mount ing nut of the connec tion[...]

44 C HAPTER 2: I NSTALLING T HE S WITCH 7750 Connecting the PoE Power Cord Follow these steps to con nect the power cord from the PoE rack: 1 Loosen the mounting screw of the PoE term inal block on the rear panel of the switch. 2 Insert the -48V OT terminal of the DC pow er cord to the NEG (-) terminal of the switch and fasten the mounting scr ew; [...]

Installing the Fan Assembly 45 Installing the Fan Assembly T o install the fan: 1 Wear an antistatic wrist strap. 2 Remove the fan frame from the pack. 3 Hold the ejector levers on the fan frame w ith both hands and push th em outward. 4 Align the fan with the guides in the cha ssis and slide it gently into the slot. 5 Push the fan until its positi[...]

46 C HAPTER 2: I NSTALLING T HE S WITCH 7750 Connecting Module Cables This section describes how to conn ect electrical and optical cables. Connecting Electrical Port Cables The 48-port 10/1 00BASE-T module a nd 8-port 10/1 00/1000BASE-T module requir e a RJ-45 connector and category-5 twisted pair cable. See “Electrical Port Connector” on page[...]

Installing Cabling 47 CAUTION: When connecting an SC fiber connector , the switch TX must be connected to the RX of the device on the network, and the switch RX must be connected to the TX of the device on the network. MT -RJ fiber connector The 24-port 100BASE-FX MMF FE module requir es an MT -RJ optical fiber connector . T o attach the MT -RJ fib[...]

48 C HAPTER 2: I NSTALLING T HE S WITCH 7750 Follow the parameters defined in T ab le 48 for binding cables with ties. Post-installation Checklist After you install your switch , use the checklist in T able 49 to verify that you r switch operates correctly . WARNING: Confirm that you have turned off the power before checking your installation. Impr[...]

3 C ONFIGURING THE S WITCH 7750 The following sections of this chap ter describe how to configure and boot the Switch 7750: ■ Configuring the Switch 7750 and a Local T erminal ■ Setting T e rminal Pa rameters ■ Booting the Switch 7 750 Configuring the Switch 7750 and a Local T ermina l Configure the local terminal and Switch 7750, using Figur[...]

50 C HAPTER 3: C ONFIGURING THE S WITCH 7750 Figure 37 Connection Description Dialog Box 2 Enter the name of t he new connection in the Name field and click OK . The dialog box, shown in Figure 38 displays. Select the serial port to be used from the Connect using dropdown menu. Figure 38 Properties Dialog Box 3 After selecting serial ports, click O[...]

Setting Terminal Parameters 51 Figure 39 COM1 Pr operties Dialog Box 4 Click OK . The HyperT erminal dialogue b ox displays, as shown in Figur e 40 . Figure 40 HyperT erminal Window 5 Select Properties . 6 In the Properties dialog box, select the Settings tab, shown in Figure 41 . 7 Select VT100 in the Emula tion dr opdown menu. 8 Click OK .[...]

52 C HAPTER 3: C ONFIGURING THE S WITCH 7750 Figure 41 Settings T ab Booting the Switch 7750 Before powering on the Switch 7750, verify that: ■ Power cords have been pr operly connected. ■ The voltage of power supply can me et the r equirements on the switch. ■ The console cable has been connected properly . ■ The PC or terminal for conf ig[...]

Booting the Switch 77 50 53 Powering up and Booting T urn on the po wer for the Switch 775 0 and run the B ootROM program. The terminal displays the following infor mation: Starting...... RAM Line....OK System is booting..................... *************************** *************** * * * Switch 7750 BOOTROM, Ver sion 300 * * * ******************[...]

54 C HAPTER 3: C ONFIGURING THE S WITCH 7750 The display of these messages indica tes the completion o f the switc h auto-booting. Press Enter and th e terminal screen displays: <3Com> Y ou can now begin the co nfiguration for the Switch 7750.[...]

4 M AINTAINING S OFTWAR E This chapter covers the following topics: ■ Upgrading Sof tware ■ Lost Passwords ■ Using the BOOT Menu Upgrading Software The following sections describe how to upgrade software on your Switch 7750: ■ Upgrading the Software Image ■ Upgrading Softwa re with F TP ■ Upgrading Software Using The BOOT Menu ■ Upgra[...]

56 C HAPTER 4: M AINTAINING S OFTWARE Privilege note: 0-VISIT, 1-MONITOR , 2-SYSTEM, 3-MANAGE <SW7750> ftp 10.10.110.1 Trying ... Press CTRL+K to abort Connected. 220 3Com 3CDaemon FTP Server Versi on 2.0 User(none): anonymous 331 User name ok, need password Password: xxxxxxx 230 User logged in [ftp] bin 200 Type set to I. [ftp] get sw7750003[...]

Upgrading Software 57 FAB96 self testing...................................... .... SDRAM Data lines Selftest.............. ...................OK! SDRAM Address lines Selftest........... ...................OK! SDRAM fast selftest..................................... ..OK! Please check LEDs.....................L EDs selftest finished! CPLD selftest.[...]

58 C HAPTER 4: M AINTAINING S OFTWARE Selecting the Application File for the Boot If the Switch 7750 primary image fails be cause o f a CRC error or a file format error , you can conf igure the system to fi nd the backup image you select t o boot from. T o select the image file that you want the system to boot from: 1 Select 0 to return to the Boot[...]

Upgrading Software 59 The file you selected is SW7750-V300R-. app, are you sure? Yes or No(Y/N) y On reboot,SW7750-V300R-.app will become the default appl ication file to boot! 7 Ty p e Y to run the primary image: Do you want to run snec400.app now? Yes or No(Y/N)? Y No Backup Image If you do not enter the number of a backup boot file, the followin[...]

60 C HAPTER 4: M AINTAINING S OFTWARE Assert at file: 'vfs_flsh.c', Line : 4549 There are 3 files in this package SRPU app file error! backup boot f ile is corrupted! Select a file to boot from! the num is 1 the num is 2 File SW7750-V300RE-8016.app is sel ected for autoBoot: backup file is SW7750-V300RE-8016. app There are 3 files in this[...]

Upgrading Software 61 packet. If the check fails, negat ive characters are sent and the sending program sends the packet again. 1 Enter 1 in the BOOT Menu and press Enter . The system accesses the download application file menu: 1. Set TFTP protocol parameter 2. Set FTP protocol parameter 3. Set XMODEM protocol parameter 0. Return to boot menu Ente[...]

62 C HAPTER 4: M AINTAINING S OFTWARE Figure 42 Send File dialog box 11 Change the protocol name for the download to Xmodem . 12 Click Send . The dialog box shown in Figu re 43 displays. Figure 43 Xmodem File Send Dialog Box 13 After the download is complete, the system interface is shown, as follows: Loading ...CCCCCCCCCCCCCCCCCCCCCCC CCCCCCCCCCCC[...]

Lost Passwords 63 A TF TP Server program is shipped on the CDROM with the Switch 7750. Before you upgrade: ■ V erify that there is a connection bet w een the TF TP server and the Switch 7750 (use the ping command.) ■ V erify th at the TF TP server is set up according to the manufacturer's instructions and that it is enabled and pointing to[...]

64 C HAPTER 4: M AINTAINING S OFTWARE Starting...... RAMLine.....OK System is booting................. .... ********************** ******************** * * * Switch 7750 BOOTROM , Version 516 * * * ********************** ******************** Copyright (c) : 2003-2005 3Com Corporation Creation date : Jan 20 200 5, 09:37:12 CPU type : MPC8245 CPU Clo[...]

Using the BOOT Menu 65 CAUTION: While using the switch, please keep in mind the modi fied BOOTROM password.[...]

66 C HAPTER 4: M AINTAINING S OFTWARE[...]

5 T R OUBLESHOOTING This chapter covers the following topics: ■ T r oubleshooting the Config uration ■ T r oubleshooting Power ■ T r oubleshooting the Fan ■ T r oubleshooting the Mo dules The simplest way to diagnose a fault is to check the system status LEDs on the Fabric modules. In addition , with th e DeviceMg r network management syste[...]

68 C HAPTER 5: T ROUBLESHOOTING Ta b l e 50 describes power LEDs on the Fabric. (continued) T roubleshooting the Fan If the fan OK LED is off, check that: ■ The fan has been installed in the corr ect position for normal communication with the backplane. ■ Every heat dissipation fan is working normally . ■ There is nothing blocking the vent of[...]

6 M AINTAINING H AR DWAR E This chapter covers the following topics: ■ Replacing a Power Module ■ Replacing a Power Supply ■ Replacing I/O Modules ■ Replacing th e Fan Assembly The procedures in this chapter should be performed by traine d ser vice personnel only . Replacing a Power Module T o replace a power module, you need: ■ An antist[...]

70 C HAPTER 6: M AINTAINING H ARDWARE 6 Connect the power cords to separate AC power sour ces on separat e power grid s or to a UPS/backup power system. WARNING: Do not power on the switch until you reconnect all the components. Replacing a Power Supply T o replace a power supply , you need: ■ An antistatic wrist strap ■ A screwdriver WARNING: [...]

Replacing I/O Modules 71 Replacing I/O Modules T o replace an I/O module, you need: ■ An antistatic wrist strap ■ A Screwdriver T o remove a module: 1 Remove all the cables from the module to be removed. 2 Loosen the captive screws. 3 Hold the ejector levers on the module with both han ds, and press them towar d both sides to separate the conne[...]

72 C HAPTER 6: M AINTAINING H ARDWARE WARNING: If the fan fails, replace it with a new one without delay before operating the Switch 7750. Failure to do so will cause the switch to overheat.[...]

B O BTAINING S UPPORT FOR YOUR S WITCH Register Y our Product to Gain Service Benefits T o take advantage of warranty and other se rvice benefits, you must first register your product at http://eSupport.3com.com/ . 3Com eSupport services ar e based on accounts that you create or have author ization to access. First time users must apply for a user [...]

74 C HAPTER B: O BTAINING S UPPORT FO R YOUR S WITCH Software Upgrades ar e the software releases that follow the software version included with your original product. In order to access upgrades and r elated documentation you must first pu rchase a service contract from 3Com or your res e l le r . Contact Us 3Com offers telephone, e-mail and inter[...]

Telephone Technical Support and Repair 75 Europe, Middle East, and Africa T e lephone T echnical Support and Repair From anywhere in these regions, call: +44 (0)1442 435529 From the following countries, you may u se the numb ers shown: Austria Belgium Denmark Finland France Germany Hungary Ireland Israel Italy 01 7956 7 124 070 700 770 7010 7289 01[...]

76 C HAPTER B: O BTAINING S UPPORT FO R YOUR S WITCH[...]

A S WITCH 7750 C ABLES This appendix covers the following types of cables and connectors: ■ Console Cable ■ AUX Cable ■ Electrical Port Connector ■ Optical Fiber Cable Connectors Console Cable Figure 44 illustrates the consol e cable and connectors. Figure 44 The Console cable Ta b l e 53 lists console cable pin-outs. AUX Cable Figure 45 il[...]

78 A PPENDIX A: S WITCH 7750 C ABLES Figure 45 The AUX Cable Ta b l e 54 lists the AUX cable pin-outs. Electrical Port Connector Figure 46 illustrates the RJ-45 connector . Figure 46 The RJ-45 Connector Ta b l e 55 lists RJ-45 MDI port pin-outs. Ta b l e 54 AUX Cable Pin-outs RJ-45 Signal Direction DB-25 DB-9 1 RTS ---> 4 7 2 DTR ---> 20 4 3 [...]

Optical Fiber Cable Connectors 79 Tx = Send data Rx = Receive da ta BI = I-directional data. Ta b l e 56 lists RJ-45 MDI-X Port Pin-outs. Optical Fiber Cable Connectors Figure 47 illustrates the SC optical fiber cable connector . Figure 47 SC Optical Fiber Connector 3 Rx+ Receive data BIDB+ Send data to direction B 4 Reserved - BIDC+ Receive data f[...]

80 A PPENDIX A: S WITCH 7750 C ABLES Figure 48. illustrates the MT -RJ fi ber optic cable connector . Figure 48 The MT -RJ Fiber Connector Figure 49 illustrates the LC connector . Figure 49 LC Connector[...]