Dell PowerConnect 3248 System User'S Manual Download Page 68

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Summary of Contents for PowerConnect 3248

Page 1: ...ude and DellNet are trademarks of Dell Computer Corporation Microsoft and Windows are registered trademarks of Microsoft Corporation Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names other than its own August 2002 P N ...

Page 2: ...uplex operation l Port mirroring l Auto MDI MDIX support for the 10 100BASE TX and the 10 100 1000BASE T ports l MAC addresses lookup based on port VLAN ID and MAC addresses l Redundant power supply RPS support for uninterrupted operation l System light emitting diode LED and per port LEDs l Standard 1U chassis l 19 inch rack mountable Management Features l Web based management with embedded HTTP ...

Page 3: ...d a fault Console Port You can access the console interface from the RS 232 serial port or a Telnet connection The console port uses a standard null modem cable For instructions on configuring your switch using the console see Management Interface Port LEDs One LED shows the operating status of each Fast Ethernet and Gigabit Ethernet port Each port LED has two modes of operation link activity or f...

Page 4: ...et You can also connect a computer or terminal to the serial console port or use Telnet to access the switch The command line driven interface provides complete access to all switch management features Most of the common commands are described in Management Interface For a full list of commands see the Command Line Reference which is included on the documentation CD SNMP Based Management You can m...

Page 5: ...l RFC 2618 RADIUS authentication client MIB l Dell PowerConnect 3248 Private MIB Back to Contents Page ...

Page 6: ...entimeters cm on each side of the switch and 5 inches 12 7 cm at the back for the power cable 2 Attach the rubber feet on the marked locations on the bottom of the chassis The rubber feet although optional are recommended to keep the unit from slipping Installing the Switch in a Rack You can install the switch in most standard 19 inch 48 3 cm racks 1 Use the supplied screws to attach a mounting br...

Page 7: ...ing the CLI in privileged access Privileged Exec mode 5 Enter the commands to complete your desired tasks Many commands require Privileged Exec level access CLI commands for most common tasks are provided in Management Interface See the Command Line Reference on the documentation CD for a list of all commands and additional information on using the CLI 6 When you have completed your tasks exit the...

Page 8: ...level global configuration mode type configure and press Enter 2 To delete the existing private community string type no snmp server community private and then press Enter 3 Type snmp server community string rw where string is your new community string case sensitive for read write access Press Enter 4 To delete the existing public community string type no snmp server community public and then pre...

Page 9: ...68 1 254 Console config To configure the switch for DHCP or BOOTP 1 From the Privileged Exec level global configuration mode prompt type interface vlan 1 to access the interface configuration mode Press Enter 2 At the next prompt use one of the following commands l To obtain IP settings through DHCP type ip address dhcp l To obtain IP setting through BOOTP type ip address bootp 3 Press Enter 4 To ...

Page 10: ...l SNMP l Multicast Support l Statistics System The System page contains a dynamic switch applet that displays the current status of the switch ports The color of each switch port icon indicates its link status l Green The link is up l Grey The link is down Clicking on any port icon displays the port configuration page Web Pages System Switch Ports Address Table Spanning Tree VLAN Class of Service ...

Page 11: ...ransfer a firmware upgrade to the switch l Configuration Allows you to save or restore switch configuration files l Reset Allows you to reboot the switch General Information The General page contains links to the following pages l Asset l Health l Versions l Logs Asset The Asset page contains the following information l MAC Address l SNMP Object ID l System Up Time It also includes the following e...

Page 12: ...29 69 seconds System Name Server Chassis 35 System Location WC 19 System Contact Paul MAC address 00 00 e8 00 00 01 Web server enable Web server port 80 POST result UART Loopback Test PASS Decrementer Test PASS CACHE Test PASS DRAM Test PASS I2C Initialization PASS Runtime Image Check PASS PCI Device Check PASS Switch Driver Initialization PASS Switch Internal Loopback Test PASS Command Usage show...

Page 13: ...llowing table summarizes the equivalent CLI command for items in the Switch General Health page Example Console show version Unit1 Serial number 123456 Service tag 1 Hardware version 2002 Number of ports 50 Main power status up Redundant power status not present Agent master Unit id 1 Loader version 0 0 5 5 Boot rom version 0 0 6 2 Operation code version 0 2 0 0 Console Versions The Versions page ...

Page 14: ...ts 50 Main power status up Redundant power status not present Agent master Unit id 1 Loader version 0 0 5 5 Boot rom version 0 0 6 2 Operation code version 0 2 0 0 Console Logs The Logs page allows you to scroll through the logged system and event messages The switch can store up to 2 kilobytes KB of log entries in temporary random access memory RAM memory flushed on power reset and up to 4 KB of ...

Page 15: ...tocol BOOTP l IP Address Identifies the IP address of the VLAN interface that allows management access to the switch l Subnet Mask Identifies the subnet mask that determines the host address bits used for routing to specific subnets l Gateway IP Address Identifies the IP address of the gateway router between the switch and management stations that exist on other network segments The Management VLA...

Page 16: ...ntains links to the following information Command Usage ip address ip address netmask bootp dhcp Sets the primary IP address for this device Use the no form command to remove the IP address or to disable IP address assignment through BOOTP or DHCP ip default gateway gateway Establishes a static route between the switch and management stations that exist on another network segment show ip interface...

Page 17: ...al Exec access to the switch and level 15 allows Privileged Exec access The RADIUS Settings page contains the following editable fields l Authentication Select the authentication or authentication sequence required Radius A RADIUS server authenticates the user Local The switch authenticates the user Radius Local A RADIUS server attempts to authenticate the user first and then the switch attempts t...

Page 18: ...s set as the Start Up file This allows you to try a new version of the software without overwriting the previous version The Firmware page contains the following fields l Current Operation Code Version It also contains the following editable fields l TFTP Server IP Address Specifies the server from which the system must retrieve the new version of the software l Source File Name Specifies the path...

Page 19: ...can contain only two software code files You cannot download a third file you must first replace an existing file or remove a file 4 Click Transfer from Server Deleting an Operation Code File from the Switch 1 In the Remove Operation Code Image File field select the file to delete from the drop down menu 2 Click Remove File Selecting the Operation Code Start up File 1 In the Start Up Operation Cod...

Page 20: ...iguration File from Server enter the IP address of the TFTP server in the TFTP Server IP Address field 2 In the Source File Name field type the filename of the configuration file to download 3 In the Destination File Name field select a configuration file to replace from the drop down menu or specify a new filename with no more than 32 characters Filenames are case sensitive and cannot contain spa...

Page 21: ...ss 10 1 0 99 Source configuration file name startup 01 Startup configuration file name startup Console Reset Click Reset to reboot the switch When prompted confirm that you want to reset the switch CLI Commands The following table summarizes the equivalent CLI command for items in the Switch Reset page Example Command Usage copy file file running config startup config tftp Uploads a configuration ...

Page 22: ...eed and mode l Flow Control Allows automatic or manual selection of support for flow control and indicates the type of flow control currently in use l Autonegotiation Port Capabilities Allows autonegotiation to be enabled disabled and indicates the capabilities of the port that are advertised during autonegotiation 10h Supports 10 megabits per second Mbps half duplex 10f Supports 10 Mbps full dupl...

Page 23: ...ndicates the capabilities of the port members To save any changes you make in this page click Apply Changes If you don t want to save the changes click Refresh interface ethernet unit port Configures an Ethernet port interface and enters interface configuration mode shutdown Disables an interface To restart a disabled interface use the no form command description string Adds a description to an in...

Page 24: ...Commands The following table summarizes the equivalent CLI command for items in the Ports Broadcast Control page Command Usage interface port channel channel id Configures a trunk and enters interface configuration mode shutdown Disables a trunk interface To restart a disabled interface use the no form command description string Adds a description to a trunk interface speed duplex 1000full 100full...

Page 25: ...hen click Add Mirror Session To delete a mirror session click the session in the Sessions Table and then click Remove Mirror Session CLI Commands The following table summarizes the equivalent CLI commands for items in the Ports Port Mirroring page Example Console config interface ethernet 1 6 Console config if port monitor ethernet 1 5 both Console config if Address Table The Address Table page in...

Page 26: ...n reset Console config Dynamic Addresses The Dynamic Address lookup table allows you to view the MAC addresses that are currently in the address database When addresses are in the database the packets intended for those addresses are forwarded directly to those ports You can sort the table by interface VLAN and MAC address by selecting the sort key from the drop down menu The Dynamic Addresses pag...

Page 27: ...ge this value to any number between 10 and 1000000 seconds The default is 300 seconds To save any changes you make in this page click Apply Changes If you don t want to save the changes click Refresh CLI Commands The following table summarizes the equivalent CLI command for items in the Address Tabled Address Aging page Example Console config bridge group 1 aging time 300 Console config Command Us...

Page 28: ... root port on the switch to the root device l Configuration Changes Specifies the number of times the Spanning Tree has been reconfigured l Last Topology Change Identifies the time since the Spanning Tree was last reconfigured From the Bridge Settings page under Attributes you can also enable and configure the following Spanning Tree parameters l Spanning Tree State Enables or disables the Spannin...

Page 29: ...inues learning addresses l Trunk Indicates whether the port is configured as a trunk member The Port Settings page also contains the following editable fields l Priority Indicates the priority assigned to the port for the Spanning Tree Protocol 0 to 255 A port with a higher priority is less likely to be blocked if the Spanning Tree Protocol detects network loops Low numeric value indicates a high ...

Page 30: ...riority 0 Console config if bridge group 1 portfast VLAN You can use virtual LANs VLANs to assign ports on the switch to any of up to 255 LAN groups In conventional networks with routers broadcast and multicast traffic is split up into separate domains Switches do not inherently support broadcast domains which can lead to broadcast storms in large networks By using IEEE 802 1Q compliant VLANs and ...

Page 31: ... associated with this VLAN will not be transmitted by the port The VLAN tagging option is a standard set by the IEEE to facilitate the spanning of VLANs across multiple switches For more information see VLANs and the IEEE Std 802 1Q 1998 Virtual Bridged Local Area Networks To save any changes you make in this page click Apply Changes If you don t want to save the changes click Refresh Adding a VLA...

Page 32: ...r each port listed in the Port column the following options are available l PVID Specifies the VLAN ID assigned to untagged frames received on the port To assign a VLAN ID as the port s PVID the port must be an untagged VLAN member Command Usage vlan database Allows you to enter VLAN database mode vlan vlan id name vlan name media ethernet state suspend active Configures a VLAN Use the no form com...

Page 33: ...lent CLI commands for items in the VLAN Port Settings page Example Console config interface ethernet 1 1 Command Usage switchport native vlan vlan id Configures the PVID default VLAN ID for a port switchport acceptable frame types all tagged Configures the acceptable frame types for a port switchport ingress filtering Enables ingress filtering for a port switchport gvrp Enables GVRP for a port gar...

Page 34: ...the advertised VLAN All GVRP dynamically learned VLANs operate as tagged VLANs A GVRP enabled port only joins a VLAN when an advertisement for that VLAN is received on that specific port A GVRP enabled port forwards advertisements from other ports on the switch but does not join the advertised VLAN To implement GVRP in a network you must first configure the static VLANs required on switches that a...

Page 35: ...port priority and then sorted into the appropriate priority queue at the output port For each port listed in the Port column you can assign the default port priority from 0 to 7 to untagged frames received on the port The default setting for ports is 0 CLI Commands The following table summarizes the equivalent CLI command for items in the Class of Service Port Settings page Example Console config ...

Page 36: ...represents a low priority and higher values represent higher priorities CLI Commands The following table summarizes the equivalent CLI commands for items in the Class of Service Traffic Classes page Example Console config interface ethernet 1 1 Console config if queue cos map 0 0 1 2 Console config if queue cos map 1 3 Command Usage switchport priority default default priority id Sets a priority f...

Page 37: ... for a CoS To change a table setting select the entry in the WRR Setting Table type the new weight in the Weight Value box and then click Apply Changes If you don t want to save the changes click Refresh CLI Commands The following table summarizes the equivalent CLI commands for items in the Class of Service Queue Scheduling page Example Console config queue bandwidth 1 4 16 64 Console config exit...

Page 38: ...oS field structure for IP Precedence and IP DSCP From the IP Precedence section you can map IP Precedence values to traffic class values These settings apply to all ports on the switch The following options are available l IP Precedence Priority Table Displays a list of IP Precedence values with mapped CoS values l Class of Service Value Maps a CoS value to an IP Precedence value The number 0 repr...

Page 39: ...nce DSCP Priority Status field to enable this feature Each IP DSCP value from 0 to 63 is mapped to one CoS value from 0 to 7 The number 0 represents the lowest priority and 7 represents the highest priority The following table shows the default priority mapping All of the DSCP values that are not specified are mapped to CoS value 0 To change a table setting select the entry in the DSCP Priority Ta...

Page 40: ...heir mapped CoS values l IP Port Number TCP UDP Sets a new IP port number l Class of Service Value Sets a CoS value for a new IP port The number 0 represents low priority and 7 represents high priority To add an IP port type the port number in the IP Port Number box and the new CoS value in the Class of Service Value box and then click Add IP Port To delete an IP port setting click the entry in th...

Page 41: ... ports on the switch as LACP as long as they are not already configured as part of another trunk If ports on another device are also configured as LACP the switch and the other device negotiate a trunk link between them If an LACP trunk consists of four ports all other ports are placed in a standby mode If one link in the trunk fails one of the standby ports is automatically activated to replace i...

Page 42: ...gregation Trunk Settings page Example Console config interface port channel 1 Console config if exit Console config interface ethernet 1 11 Console config if channel group 1 Console config if exit Console config interface ethernet 1 8 Console config if lacp Console config if SNMP The SNMP page contains links to the following pages l Communities l Traps Communities NOTICE All ports on both ends of ...

Page 43: ...le config snmp server community private rw Console config Traps On the Traps page you can specify management stations that receive authentication failure messages and other trap messages from the switch The following options are available l Trap Manager Capability Indicates that the switch supports up to five trap managers l Trap Manager List Displays a list of the trap managers currently configur...

Page 44: ...dicating to multicast groups that they wish to join or to which group they already belong The querier then propagates the service requests on to any adjacent multicast switch router to ensure that it continues to receive the multicast services IGMP enabled devices prune multicast traffic on the network by passively snooping on IGMP report messages passing through their ports The devices monitor ho...

Page 45: ...y Changes If you don t want to save the changes click Refresh CLI Commands The following table summarizes the equivalent CLI commands for items in the Multicast Support IGMP Setting page Example Console config ip igmp snooping Console config ip igmp snooping querier Console config ip igmp snooping query count 10 Console config ip igmp snooping query interval 100 Console config ip igmp snooping que...

Page 46: ...lticast service To save any changes you make in this page click Apply Changes If you don t want to save the changes click Refresh CLI Commands The following tables summarize the equivalent CLI commands for items in the Multicast Support IGMP Member Port Table page Example Console config ip igmp snooping vlan 1 static 224 1 2 3 ethernet 1 11 Console config exit Console show bridge 1 multicast VLAN ...

Page 47: ...nooping vlan 1 mrouter ethernet 1 5 Console config exit Console show ip igmp snooping mrouter vlan 1 VLAN M cast Router Port Type 1 Eth 1 5 Static Console Statistics From the Statistics page you can chart a variety of system data You can see the value of each bar or line in the chart by clicking the bar For each chart after you have set all the variables click Draw The Statistics page contains lin...

Page 48: ...items in the Statistics Table page Example Console show interfaces counters ethernet 1 17 Ethernet 1 17 Iftable stats Octets input 91248 Octets output 343887 Unitcast input 680 Unitcast output 593 Discard input 0 Discard output 0 Error input 0 Error output 0 Unknown protos input 0 QLen output 0 Extended iftable stats Command Usage show interfaces counters interface Statically configures a multicas...

Page 49: ...rrors 0 Frame too longs 0 Carrier sense errors 0 RMON stats Drop events 0 Octets 435135 Packets 3430 Broadcast pkts 303 Multi cast pkts 1854 Undersize pkts 0 Oversize pkts 0 Fragments 0 Jabbers 0 CRC align errors 0 Collisions 997976404 Packet size 64 octets 2584 Packet size 65 to 127 octets 211 Packet size 128 to 255 octets 198 Packet size 256 to 511 octets 317 Packet size 512 to 1023 octets 95 Pa...

Page 50: ...the switch without tags must be made by the user of the switch This configuration can be made either through the web or console interface or through Simple Network Management Protocol SNMP Assigning Ports to VLANs Before enabling VLANs for the switch you must first assign each port to the VLAN groups in which it will participate By default all ports are assigned to VLAN 1 as untagged ports You sho...

Page 51: ...vertise static VLANs to other switches in the network Any GVRP enabled device receiving the advertisements can dynamically join the advertised VLAN All GVRP dynamically learned VLANs operate as tagged VLANs A GVRP enabled port only joins a VLAN when an advertisement for that VLAN is received on that specific port A GVRP enabled port forwards advertisements from other ports on the switch but does n...

Page 52: ...om the Show VLAN drop down menu 2 In the Name box type New to represent the new VLAN 3 In the VLAN ID box type 2 for the new VLAN 4 Click Apply Changes to create the new VLAN 5 Select VLAN 2 from the Show VLAN drop down menu Because there are no ports in the new VLAN all the port and trunk toggle buttons are blank 6 Click the toggle buttons in the Static row under the port trunk numbers to select ...

Page 53: ...rs of the default VLAN VLAN ID 1 2 Set up the Port VLAN IDs PVIDs as shown in the following figure The specific ports shown in the previous figure have the following PVID settings The PVID settings for each port are configured in the Port Settings page VLAN ID Name Port Members Tagged Untagged 2 Admin 1 U 2 U 10 U 5 Internal 1 U 4 U 5 U 10 Web 1 T 9 T 10 T 11 U 12 U 15 Collocation 1 U 2 U 14 U ...

Page 54: ...t l If a tagged packet with a VLAN tag value 15 enters Port 9 it is forwarded to ports in VLAN 15 even though Port 9 is not a member of VLAN 15 The tagged packet enters Port 9 because the Ingress Filtering parameter for Port 9 is set to disabled the default If Ingress Filtering is disabled a tagged packet is forwarded if its VLAN tag value matches a VLAN ID already configured on the switch otherwi...

Page 55: ...each network segment to only two of the VLANs For example users attached to Switch 3 have access to VLANs 11 and 22 but not to VLAN 33 End user requests enable ports on Switch 3 to join VLAN 33 but these users do not have access to the rest of the network Example 4 Example 4 illustrates how GVRP is implemented where VLANs configured in wiring closet switches are automatically recognized by a core ...

Page 56: ...are sent to the core switch When the core switch receives the advertisements it dynamically creates the VLANs and places the receiving ports in these VLANs The GVRP port settings on the wiring closet switches need to be set to disabled This setting prevents these switches from dynamically creating other VLANs or adding port members to the existing static VLANs The global GVRP switch setting still ...

Page 57: ...autonegotiation feature is enabled at the switch See Port Configuration for more information Management Access l The terminal cannot access the switch Ensure that Your terminal is correctly configured to operate as a VT100 terminal You are using a proper null modem cable You have set the terminal emulator program to VT100 compatible 8 data bits 1 stop bit no parity and 9600 bps See Connecting the ...

Page 58: ...s The VLAN port memberships should be set up as shown in the following figure In the preceding figure the management VLAN is VID 2 and all inter switch ports are configured as tagged ports The ports that interconnect the switches must be configured as members of the management VLAN and the management station must be connected to a port that is also a member of the same VLAN For management VLAN acc...

Page 59: ...by connecting a computer directly to the serial console port on the switch s front panel and using VT100 terminal emulation software that supports the XModem protocol See Connecting the Console Port To download firmware 1 Connect a computer to the switch s console port using a null modem or crossover RS 232 cable with a female DB 9 connector 2 Configure the terminal emulation software s communicat...

Page 60: ...lowing figure shows an example of the download procedure for a runtime code file Select x Xmodem Receiving Start R untime D iagnostic Update Image File r Runtime Image Filename run_10030 Updating file system File system updated Press any key to continue 12 To set the new downloaded file as the startup file click the S et Startup File menu option 13 When you have finished downloading code files cli...

Page 61: ... on the WELCOME TO DELL SUPPORT page and fill in the requested details to access help tools and information You can contact Dell electronically using the following addresses l World Wide Web www dell com www dell com ap for Asian Pacific countries only www euro dell com for Europe only www dell com la for Latin American countries l Anonymous file transfer protocol FTP ftp dell com Log in as user a...

Page 62: ...l items being returned whether for repair or credit as follows 1 Call Dell to obtain a Return Material Authorization Number and write it clearly and prominently on the outside of the box For the telephone number to call see the contact numbers for your region 2 Include a copy of the invoice and a letter describing the reason for the return 3 Include a copy of the Diagnostics Checklist indicating t...

Page 63: ...dell com Home and Small Business 1 300 65 55 33 Government and Business toll free 1 800 633 559 Preferred Accounts Division PAD toll free 1 800 060 889 Customer Care toll free 1 800 819 339 Corporate Sales toll free 1 800 808 385 Transaction Sales toll free 1 800 808 312 Fax toll free 1 800 818 341 Austria Vienna International Access Code 900 Country Code 43 City Code 1 Website support euro dell c...

Page 64: ...l free 800 858 2222 Preferred Accounts Division toll free 800 858 2062 Large Corporate Accounts GCP toll free 800 858 2055 Large Corporate Accounts Key Accounts toll free 800 858 2628 Large Corporate Accounts North toll free 800 858 2999 Large Corporate Accounts North Government and Education toll free 800 858 2955 Large Corporate Accounts East toll free 800 858 2020 Large Corporate Accounts East ...

Page 65: ...Code 6103 Website support euro dell com E mail tech_support_central_europe dell com Technical Support 06103 766 7200 Home Small Business Customer Care 0180 5 224400 Global Segment Customer Care 06103 766 9570 Preferred Accounts Customer Care 06103 766 9420 Large Accounts Customer Care 06103 766 9560 Public Accounts Customer Care 06103 766 9555 Switchboard 06103 766 7000 Grenada General Support tol...

Page 66: ...ness Sales Division up to 400 employees 044 556 1465 Preferred Accounts Division Sales over 400 employees 044 556 3433 Large Corporate Accounts Sales over 3500 employees 044 556 3430 Public Sales government agencies educational institutions and medical institutions 044 556 1469 Global Segment Japan 044 556 3469 Individual User 044 556 1760 Faxbox Service 044 556 3490 Switchboard 044 556 4300 Korea...

Page 67: ...all and Medium Business Customer Care 020 674 42 00 Corporate 020 674 50 00 Corporate Fax 020 674 47 79 Corporate Customer Care 020 674 43 25 New Zealand International Access Code 00 Country Code 64 E mail New Zealand nz_tech_support dell com E mail Australia au_tech_support dell com Home and Small Business 0800 446 255 Government and Business 0800 444 617 Sales 0800 441 567 Fax 0800 441 566 Nicar...

Page 68: ...pain Madrid International Access Code 00 Country Code 34 City Code 91 Website support euro dell com E mail support euro dell com es es emaildell Home and Small Business Technical Support 902 100 130 Customer Care 902 118 540 Sales 902 118 541 Switchboard 902 118 541 Fax 902 118 539 Corporate Technical Support 902 100 130 Customer Care 902 118 546 Switchboard 91 722 92 00 Fax 91 722 95 83 Sweden Up...

Page 69: ...rnment Education Customer Care 01344 373 199 Health Customer Care 01344 373 194 Home and Small Business Sales 0870 907 4000 Corporate Public Sector Sales 01344 860 456 Uruguay General Support toll free 000 413 598 2521 U S A Austin Texas International Access Code 011 Country Code 1 Automated Order Status Service toll free 1 800 433 9014 AutoTech portable and desktop computers toll free 1 800 247 9...

Page 70: ...rference with radio communications Operation of this equipment in a residential area is likely to cause harmful interference in which case you will be required to correct the interference at your own expense This device complies with Part 15 of the FCC Rules Operation is subject to the following two conditions l This device may not cause harmful interference l This device must accept any interfere...

Page 71: ... WARNING This is a Class A product In a domestic environment this product may cause radio frequency RF interference in which case the user may be required to take adequate measures A Declaration of Conformity in accordance with the preceding directives and standards has been made and is on file at Dell Computer Corporation Products Europe BV Limerick Ireland VCCI Notice Japan Only Class A ITE This...

Page 72: ...wer cable that is approved for use in your country The power cable must be rated for the product and for the voltage and current marked on the product s electrical ratings label The voltage and current rating of the cable should be greater than the ratings marked on the product l To help prevent electric shock plug the system and peripheral power cables into properly grounded electrical outlets Th...

Page 73: ...cuit rating l Ensure that proper airflow is provided to components in the rack l Do not step on or stand on any component when servicing other components in a rack CAUTION A qualified electrician must perform all connections to DC power and to safety grounds All electrical wiring must comply with applicable local or national codes and practices CAUTION Never defeat the ground conductor or operate ...

Page 74: ...Back to Contents Page site For information about such batteries refer to the documentation for the specific card or component ...

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