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Using Your Hub Software

3-7

Hub ID Numbers

Here are two rules that determine hub ID numbers in a stack of hubs:

1

The lowest hub ID number in a stack (1) is always assigned to the hub with another hub
connected to its OUT port and with no hub connected to its IN port.

2

The highest hub ID number in a stack (any number from 2 to 5) is always assigned to
the hub with no hub connected to its OUT port and with another hub connected to its IN
port.

Figure 3-1 illustrates these rules.

Figure 3-1

Hub ID Numbers for Stacked Hubs

OUT

STACKCONNECT

IN

OUT

STACKCONNECT

IN

OUT

STACKCONNECT

IN

OUT

STACKCONNECT

IN

OUT

STACKCONNECT

IN

OUT

STACKCONNECT

IN

Hub ID = 1

Hub ID = 2

Hub ID = 3

Hub ID = 3

Hub ID = 2

Hub ID = 1

H1

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Содержание 1503

Страница 1: ...configure any Cisco Micro Hubs in a stack the stack must include at least one Micro Hub 1503 You can connect to the Micro Hub 1503 to configure it in one of two ways Direct Connection through the CONSOLE Port Connection Using Telnet Direct Connection through the CONSOLE Port You can configure the Micro Hub 1503 by connecting a terminal or a PC directly to the hub s CONSOLE port as described in the...

Страница 2: ...umb terminal you need a type of communication software called terminal emulation software to send commands to the hub Table 3 1 Common Terminal Emulation Software Programs Terminal emulation software has changeable settings To enable your PC to communicate to the hub specify the port used by your PC for example COM 1 and then configure the software settings to the following Terminal emulation type...

Страница 3: ...his prompt the user usually the system administrator must enter a password with the enable command Hub Hub enable Password Hub There are two editing modes provided by the configuration program normal and enhanced For more information about the enhanced editing mode refer to the terminal editing command in the section Editing Commands later in this chapter The following editing commands can be used...

Страница 4: ...ed privileged mode The commands available in guest mode are a subset of those available in administrator mode When you first connect to the hub the configuration program is set to guest mode If you are connecting to the hub using Telnet you must also enter a Telnet session password To enter administrator mode use the enable command and enter the administrator password You will then be prompted to ...

Страница 5: ...ng steps Step 1 Turn the hub OFF and wait 60 seconds before going to Step 2 Step 2 Turn the hub ON and wait while the following messages are displayed on the terminal Starting the system Boot option bootp get ip Enter BOOTP phase wait or press Ctrl C to break Bootup Error Timeout no response from BOOTP server Press RETURN to start a new session Step 3 Press Ctrl C Step 4 When the following prompt ...

Страница 6: ...nt to use the BOOTP feature IP address of the hub s gateway if you want to use Telnet or SNMP IP addresses for authorized Trap Managers if you want management stations to receive trap messages generated by the hub Note If you do not have this information you might need to get it from your system administrator or from your network plan before you can complete your hub configuration Hub ID Numbers T...

Страница 7: ... to its IN port 2 The highest hub ID number in a stack any number from 2 to 5 is always assigned to the hub with no hub connected to its OUT port and with another hub connected to its IN port Figure 3 1 illustrates these rules Figure 3 1 Hub ID Numbers for Stacked Hubs OUT STACKCONNECT IN OUT STACKCONNECT IN OUT STACKCONNECT IN OUT STACKCONNECT IN OUT STACKCONNECT IN OUT STACKCONNECT IN Hub ID 1 H...

Страница 8: ...y setting the power switch to the ON position Step 3 After a few seconds you will see the user prompt Use the enable command to enter administrator mode Hub enable Step 4 After entering the command you will be prompted to enter the administrator password If the administrator password has not been set you can enter administrator mode by pressing the Return key as shown below Hub enable Password Ret...

Страница 9: ...they will not work for your network You should substitute them with the IP addresses that apply to your network devices Step 1 Use the ip address command to configure the hub s IP address subnet mask and gateway address Hub ip address 172 16 10 2 255 255 255 0 172 16 10 1 Step 2 Use the snmp community command to configure the SNMP communities and their options Hub snmp community 1 private rw Serve...

Страница 10: ...e SNMP management station receives traps from the Micro Hub 1503 and any Micro Hubs connected to it in a stack by configuring the management station as follows Make sure the management station has entries for all the Micro Hubs in the stack The entries for the Micro Hubs should have Get Community and Set Community configured as private The management station should be able to read SNMP information...

Страница 11: ... Micro Hub 1503 The configuration commands are organized into the following categories System Help Commands User Interface Commands Firmware Load and Restart Commands System Information Commands Management Configuration Commands Hub Configuration Command Port Configuration Commands Statistics Commands Chassis Information Commands ...

Страница 12: ...er SNMP Agent 1 1503 1 0 1 01 Active 2 1502 1 0 1 01 No 3 1503 1 0 1 01 Inactive Command Display Definitions Hub ID Number of the hub in the stack from top to bottom Type Model number of the hub 1502 or 1503 H W ver Hardware version of the hub F W ver Firmware version of the hub Agent Whether or not the hub contains an SNMP The name of the command How the command is entered Keywords in square brac...

Страница 13: ... brief description of the context sensitive help system Syntax Mode Guest Description Use this command in the following ways At anytime to list all commands available in the current command mode guest or administrator After an abbreviated command to list commands that start with that particular character set In a command in place of a keyword or argument to list the command s keywords or arguments...

Страница 14: ...the hub disable enable Syntax disable Mode Guest Description Exits administrator mode and returns the user to guest mode Syntax enable Mode Guest Description Use this command to enter administrator mode If you forgot your administrator password follow the process described in the section Forgot Your Password earlier in this chapter After entering enable you will be prompted for the administrator p...

Страница 15: ... closes an active terminal session Syntax help Mode Guest Description Refer to the previous section System Help Commands for more information on the help command Syntax show console lockout info Mode Guest Description Displays information about the console lockout settings The following information is displayed Status Whether console lockout is enabled or disabled Delay time Length of time of no k...

Страница 16: ...ts the console access to locked after a designated period of no keyboard activity Syntax no console lockout Mode Administrator Description Disables the console lockout feature Syntax console lockout time minutes Mode Administrator Description Configures the amount of time of no keyboard activity before console access is locked minutes Integer between 1 and 20 ...

Страница 17: ...rrent password and then the new password You will then be prompted to confirm the new password Password characters are represented by asterisks on the screen when you enter them as shown below Hub password Old password New password Re type new password Passwords can Contain up to 14 characters Contains any combination of alphanumeric characters including uppercase and lowercase letters Use spaces ...

Страница 18: ... to start a Telnet session with the hub Syntax no telnet session password Mode Administrator Description Clears any password that was entered with the telnet session password command Syntax telnet session enable disable Mode Administrator Description Configures the hub for allowing Telnet sessions Command Keyword Definitions enable Configures the hub to allow Telnet sessions disable Configures the...

Страница 19: ...mmands that are stored in the history buffer Syntax terminal history Mode Guest Description Enables the terminal history feature which configures the hub to retain commands in working memory The number of commands retained is configured with the terminal history size command The commands are not saved after the hub is rebooted with the restart command Syntax terminal no history Mode Guest Descript...

Страница 20: ... editing Syntax terminal history size size Mode Guest Description Sets the number of commands kept in the history buffer Command Keyword Definition size Integer value between 1 and 64 Syntax terminal editing Mode Guest Description Configures the hub for enhanced editing Enhanced editing enables you to use the key sequences listed in the appendix Terminal Editing Command Reference This is the defau...

Страница 21: ...turned on This setting is stored in the hub Flash read only memory Command Keyword Definitions normal Default setting for the Micro Hub 1502 The hub uses the IP address stored in the onboard firmware tftp download Downloads firmware from a TFTP server The download process is repeated every time the hub is rebooted bootp get ip Default setting for the Micro Hub 1503 The hub obtains the IP address f...

Страница 22: ...ax tftp download server ip address filename Mode Administrator Description Sets the IP address of the TFTP server that supports the hub Command Keyword Definitions server ip address IP address of the server where the firmware file is stored Should be in the format xxx xxx xxx xxx where xxx is a value between 0 and 255 The default value for this field is 255 255 255 255 The default value will work ...

Страница 23: ...nfigured the hub with an IP address using the ip address command Syntax start xmodem download Mode Administrator Description Downloads firmware updates to the hub with the Xmodem protocol Using Terminal Emulation Software After entering this command open the file transfer function in your terminal emulation software The software must support the Xmodem protocol Specify the firmware filename and st...

Страница 24: ... Syntax restart Mode Administrator Description Performs a firmware reset for the hub using the bootup option selected with the bootup option command See the section Bootup Option Commands earlier in this chapter for a description The hub ports and statistic configurations are saved during a firmware reset ...

Страница 25: ... description Cisco Stackable Ethernet Hub System up time hour 56 minutes System name Stack 1 System contact Mike System location Software Group Command Display Definitions System description Hub model System up time Length of time that the management agent inside the hub has been running System name Name of the hub configured with the system name command System contact Name of the person responsib...

Страница 26: ...tered for this option the default hub is used Syntax no system name Mode Administrator Description Resets the hub s system name to the default system name hub Syntax system contact string Mode Administrator Description Configures the hub with the name of the person responsible for the hub Command Keyword Definition string String containing 1 to 255 alphanumeric characters which can be any combinat...

Страница 27: ...ription Configures the hub with the name of the hub location Command Keyword Definition string String containing 1 to 255 alphanumeric characters which can be any combination of uppercase and lowercase A number cannot be the first character Spaces are valid characters but leading spaces are ignored If nothing is entered for this option the default headquarters is used Syntax no system location Mod...

Страница 28: ...fy the hub in a stack An integer between 1 and 5 Read the section Hub ID Numbers earlier in this chapter for information about how to determine hub ID numbers H W version Hardware version of the hub F W version Firmware version of the hub Bootup option Bootup option configured with the bootup option command as described in the section Bootup Option Commands earlier in this chapter Physical address...

Страница 29: ...s to use SNMP Telnet and TFTP functions show ip configuration Syntax show ip configuration Mode Guest Description Shows the current configuration for IP as shown below Hub show ip configuration IP address 10 10 10 10 Subnet mask 255 255 255 0 Gateway IP 10 10 10 254 Command Display Definitions IP address Hub s IP address Subnet mask Hub s subnet mask the host address bits used for routing traffic ...

Страница 30: ... subnet mask of the hub The default value is 255 255 255 0 gateway ip IP address of the gateway used by the hub The default value is xxx xxx xxx 254 where xxx xxx xxx are the same fields as the first three fields of the ip address field The gateway address is usually the IP address of a router on the same LAN as the hub Syntax no ip address Mode Administrator Description Resets the hub with the de...

Страница 31: ...ation about all of the configured community strings Following is example output from this command Hub show snmp communities Index Community Name Access Right Status 1 public read write enabled 2 private read only enabled 3 read only disabled 4 read only disabled Command Display Definitions Index Index number of the community string Community Name Name used for management access Can be up to 20 alp...

Страница 32: ...y table entries An integer from 1 to 5 string Community name An alphanumeric string that contains from 1 to 20 characters A number cannot be the first character Spaces are not valid characters ro Optional Sets the community for read only access This is the default value rw Optional Sets the community for read write access Syntax snmp community disable index Mode Administrator Description Disables ...

Страница 33: ...nables a community string Command Keyword Definition index Index of an entry in the community table An integer between 1 and 5 Syntax snmp trap authentication Mode Administrator Description Enables trap message authentication Trap message sent from the hub are authenticated by the SNMP community string Syntax no snmp trap authentication Mode Administrator Description Disables trap message authenti...

Страница 34: ...show ip trap managers Mode Guest Description Displays information about authorized trap managers as shown in the following example Hub show ip trap managers Index IP Address Community Name Status 1 222 222 222 222 public enabled 2 11 11 11 11 public disabled 3 0 0 0 0 public disabled 4 0 0 0 0 public disabled 5 0 0 0 0 public disabled Command Display Definitions IP Address IP address of the networ...

Страница 35: ...m 1 to 5 ip address IP address of the trap receiver in the following format xxx xxx xxx xxx community name Community string that is required for trap access Syntax ip trap manager enable index Mode Administrator Description Enables a trap manager entry Command Keyword Definition index Index of a trap manager table entry An integer between 1 and 5 Syntax ip trap manager disable index Mode Administr...

Страница 36: ...nformation about how to determine hub ID numbers If no number is entered information about all hubs in the stack will be displayed The display appears as follows Hub show hub information Hub ID Type H W ver F W ver SNMP Agent 1 1503 1 0 1 01 Yes 2 1502 1 0 1 01 No 3 1503 1 0 1 01 No Command Display Definitions Hub ID Number used to identify the hub in a stack An integer between 1 and 5 Read the se...

Страница 37: ...nabled Not connected not partitioned 2 enabled Not connected not partitioned 3 enabled Connected not partitioned 4 enabled Not connected not partitioned 5 enabled Not connected not partitioned 6 enabled Connected not partitioned 7 enabled Not connected not partitioned 8 enabled Not connected not partitioned Command Display Definitions Hub ID Number used to identify the hub in a stack An integer be...

Страница 38: ... the stack Command Keyword Definitions hub id Number used to identify the hub in a stack An integer between 1 and 5 Read the section Hub ID Numbers earlier in this chapter for information about how to determine hub ID numbers port id Number of the port on the hub based on the yellow label on the rear panel of the hub A number from 1 to 8 enable Enables the port disable Disables the port ...

Страница 39: ...ics Frames 9755 Bytes 78040 Collisions 671 Alignment errors 45 CRC errors 33 Total errors 867 Command Display Definitions Frames Number of frames packets passing through the hub Bytes Number of bytes passing through the hub Collisions Number of times that network devices attached to any one of the hubs in the stack have attempted to send data simultaneously Alignment errors Number of mis synchroni...

Страница 40: ...Hub show hub statistics 1 Alignment CRC Total Hub ID Frames Bytes Collisions Errors Errors Errors 1 1039 29354 264 23 12 486 Command Display Definitions Hub ID Position of the hub in the stack from top to bottom Frames Number of frames packets passing through the hub Bytes Number of bytes passing through the hub Collisions Number of times that network devices attached to any one of the hubs in the...

Страница 41: ...e displayed in the following format Hub show port statistics 1 5 Hub id 1 Port id 5 Readable frames 78040 Readable bytes 2360 CRC errors 671 Alignment errors 16 Frames too long 16 Short events 45 Runts 12 Collisions 33 Late events 32 Data rate mismatches 867 Auto partitions 0 Total errors 124 LSA changes 0 Last source address 0000000093AE Command Display Definitions Hub id Number used to identify ...

Страница 42: ...usly Late events Number of frames that experienced a collision late in transmission Data rate mismatches Number of frames for which the data rate does not match the local frequency Auto partition Number of times this port has been automatically partitioned due to a network loop Total errors Total number of errors including the following types frame control sequence alignment frames too long short ...

Страница 43: ...b Clears statistic for the specified hub If no hub is specified statistics are cleared for all hubs in the stack port Clears statistics for the specified port on the specified hub If no port is specified statistic are cleared for all ports in the stack hub id Optional Number used to identify the hub in a stack An integer between 1 and 5 Read the section Hub ID Numbers earlier in this chapter for i...

Страница 44: ...n Syntax show chassis information Mode Guest Description Displays general information about the hub s hardware and software Information is shown in the following format Hub show chassis information Chassis type c1500 72 Chassis version 1 0 Chassis ID ROM system software version 1 0 Bytes of RAM available to CPU 2048K Bytes System up time at last chassis change 2 days 10 hours 56 minutes ...

Страница 45: ...ion about the hardware and firmware in the hub Information is shown in the following format Hub show card table Card index 2 Function type of this card cpu 1503 38 Card serial number 0 Hardware version 1 0 Firmware version 1 0 Slot number relative to the containing card 2 Operational status of this card up Number of slots on this card 0 ...

Страница 46: ... 18 32 4 123 34 18 25 Command Display Definitions Stack name Name of the stack Index Location of hub in the stack from top to bottom IP address IP address of the hub Syntax stack name name Mode Administrator Description Configures the Micro Hub 1503 with a name for the stack Command Keyword Definition name Optional String of 1 to 32 alphanumeric characters Characters can be any combination of uppe...

Страница 47: ...dress Mode Administrator Description Configures a Micro Hub 1503 that is a part of a stack with an IP address Command Keyword Definition ip address IP address of the stack Must be in the format xxx xxx xxx xxx Syntax clear stack table Mode Administrator Description Clears all general stack information from the stack table ...

Страница 48: ...Command Summary Cisco Micro Hub User Guide 3 48 ...

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