37-System Maintenance and Debugging Operation

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Table of Contents

Chapter 1 BootROM and Host Software Loading. 1-1

1.1 Introduction to Loading Approaches. 1-1

1.2 Local Software Loading. 1-1

1.2.1 Boot Menu. 1-2

1.2.2 Loading Software Using XMODEM through Console Port 1-3

1.2.3 Loading Software Using TFTP through Ethernet Port 1-8

1.2.4 Loading Software Using FTP through Ethernet Port 1-10

1.3 Remote Software Loading. 1-12

1.3.1 Remote Loading Using FTP. 1-12

1.3.2 Remote Loading Using TFTP. 1-18

Chapter 2 Basic System Configuration & Debugging. 2-1

2.1 Basic System Configuration. 2-1

2.1.1 Basic System Configuration Tasks. 2-1

2.1.2 Entering System View from User View. 2-1

2.1.3 Setting the System Name of the Switch. 2-2

2.1.4 Setting the Date and Time of the System.. 2-2

2.1.5 Setting the Local Time Zone. 2-2

2.1.6 Setting the Summer Time. 2-2

2.1.7 Setting the CLI Language Mode. 2-3

2.1.8 Returning from Current View to Lower Level View. 2-3

2.1.9 Returning from Current View to User View. 2-4

2.2 Displaying the System Status. 2-4

2.3 System Debugging. 2-4

2.3.1 Enabling/Disabling System Debugging. 2-4

2.3.2 Displaying Debugging Status. 2-6

2.3.3 Displaying Operating Information about Modules in System.. 2-6

Chapter 3 Network Connectivity Test 3-1

3.1 Network Connectivity Test 3-1

3.1.1 ping. 3-1

3.1.2 tracert 3-1

Chapter 4 Device Management 4-1

4.1 Introduction to Device Management 4-1

4.2 Device Management Configuration. 4-1

4.2.1 Device Management Configuration Tasks. 4-1

4.2.2 Restarting the Ethernet Switch. 4-2

4.2.3 Rebooting a Card of Ethernet Switch. 4-2

4.2.4 Scheduling a Reboot on the Switch. 4-3

4.2.5 Specifying the APP to be Adopted at Reboot 4-3

4.2.6 Updating the BootROM.. 4-4

4.2.7 Upgrading BootROM along with the Upgrade of ARP. 4-4

4.2.8 Setting Card Temperature Threshold. 4-5

4.2.9 Enabling/Disabling RDRAM.. 4-5

4.2.10 Enabling System Load Sharing. 4-5

4.3 Configuring Pause Frame Protection Mechanism.. 4-6

4.3.1 Pause Frame Protection Mechanism Configuration Task. 4-6

4.3.2 Pause Frame Protection Mechanism Configuration Example. 4-7

4.4 Configuring Layer 3 Connectivity Detection. 4-7

4.4.1 Introduction to layer 3 connectivity detection. 4-7

4.4.2 Layer 3 Connectivity Detection Configuration Task. 4-8

4.4.3 Layer 3 Connectivity Detection Configuration Example. 4-8

4.5 Configuring Queue Traffic Monitoring. 4-9

4.5.1 Queue Traffic Monitoring Configuration Task. 4-9

4.5.2 Queue Traffic Monitoring Configuration Example. 4-9

4.6 Configuring Error Packets Monitoring. 4-10

4.6.1 Error Packets Monitoring Configuration Task. 4-10

4.6.2 Error Packets Monitoring Configuration Example. 4-10

4.7 Displaying the Device Management Configuration. 4-11

4.8 Remote Switch Update Configuration Example. 4-12

 


Chapter 1  BootROM and Host Software Loading

Traditionally, the loading of switch software is accomplished through a serial port. This approach is slow, inconvenient, and cannot be used for remote loading. To resolve these problems, the TFTP and FTP modules are introduced into the switch. With these modules, you can load/download software/files conveniently to the switch through an Ethernet port.

This chapter introduces how to load BootROM and host software to a switch locally and how to do this remotely.

1.1  Introduction to Loading Approaches

You can load software locally by using:

l           XMODEM through Console port

l           TFTP through Ethernet port

l           FTP through Ethernet port

You can load software remotely by using:

l           FTP

l           TFTP

 

&  Note:

The BootROM software version should be compatible with the host software version when you load the BootROM and host software.

 

1.2  Local Software Loading

If your terminal is directly connected to the switch, you can load the BootROM and host software locally.

Before loading the software, make sure that your terminal is correctly connected to the switch to insure successful loading.


 

&  Note:

The loading process of the BootROM software is the same as that of the host software, except that during the former process, you should press <Ctrl+U> and <Enter> after entering the Boot Menu and the system gives different prompts. The following text mainly describes the BootROM loading process.

 

1.2.1  Boot Menu

Starting......

RAMLine.....OK

System is booting..........***..........

 

 

            ******************************************

            *                                        *

            *  H3C S7506 BOOTROM, Version 522    *

            *                                        *

            ******************************************

 

Copyright (c) 2004-2006 Hangzhou H3C Technology. Co.,Ltd. All rights reserved.

Creation date   : Apr 21 2006, 19:38:53

CPU type        : MPC8245

CPU Clock Speed : 300Mhz

BUS Clock Speed : 33Mhz

BOOT_FLASH type : AMD29LV040B

Flash  Size     : 32MB

Memory Size     : 256MB

 

 

 

S7506 main board self testing................................

SDRAM Data lines Selftest.................................OK!

SDRAM Address lines Selftest..............................OK!

SDRAM fast selftest.......................................OK!

Please check LEDs.....................LEDs selftest finished!

CPLD selftest.............................................OK!

FPGA selftest.............................................OK!

The switch Mac address is .....................000F.E218.D0D0

 

 

 

Press Ctrl+B to enter Boot Menu... 5 

Press <Ctrl+B>. The system displays:

Password :

 

&  Note:

To enter the Boot Menu, you should press <Ctrl+B> within five seconds after the information “Press Ctrl-B to enter Boot Menu...” appears. Otherwise, the system starts to decompress the program; and if you want to enter the Boot Menu at this time, you will have to restart the switch.

 

Input the correct BootROM password (no password is need by default). The system enters the Boot Menu:

BOOT  MENU

 

1. Download application file to flash

2. Select application file to boot

3. Display all files in flash

4. Delete file from flash

5. Modify bootrom password

0. Reboot

 

Enter your choice(0-5):  

1.2.2  Loading Software Using XMODEM through Console Port

I. Introduction to XMODEM

XMODEM is a file transfer protocol that is widely used due to its simplicity and good performance. XMODEM transfers files via Console port. It supports two types of data packets (128 bytes and 1 KB), two check methods (checksum and CRC), and multiple attempts of error packet retransmission (generally the maximum number of retransmission attempts is ten).

The XMODEM transmission procedure is completed by a receiving program and a sending program: The receiving program sends negotiation characters to negotiate a packet checking method. After the negotiation, the sending program starts to transmit data packets. When receiving a complete packet, the receiving program checks the packet using the agreed method. If the check succeeds, the receiving program sends an acknowledgement character and the sending program proceeds to send another packet; otherwise, the receiving program sends a negative acknowledgement character and the sending program retransmits the packet.

II. Loading BootROM software

Follow these steps to load the BootROM software:

Step 1: At the prompt "Enter your choice(0-5):" in the Boot Menu, press <Ctrl+U>, and then press <Enter> to enter the BootROM update menu shown below:

SRPG bootrom update menu:

 

1. Set TFTP protocol parameter

2. Set FTP protocol parameter

3. Set XMODEM protocol parameter

0. Return to boot menu

 

Enter your choice(0-3):     

Then you can choose different protocols to load BootROM.

Step 2: Enter 3 in the above menu to download the BootROM software using XMODEM. The system will prompt to enter the name of the BootROM file to load.

Load File name           :S7500.btm

The system displays the following download baud rate setting menu:

Please select your download baudrate:

1: 9600

2: 19200

3: 38400

4: 57600

5: 115200

0: Return

 

Enter your choice(0-5):

Step 3: Choose an appropriate download baud rate. For example, if you enter 5, the baud rate 115200 bps is chosen and the system displays the following information:

Download baudrate is 115200 bps

Please change the terminal's baudrate to 115200 bps and select XMODEM protocol

Press enter key when ready

&  Note:

If you have chosen 9600 bps as the download baud rate, you need not modify the HyperTerminal’s baud rate, and therefore you can skip Step 4 and 5 below and proceed to Step 6 directly. In this case, the system will not display the above information.

 

Following are configurations on PC. Take the Hyperterminal using Windows operating system as example.

Step 4: Choose [File/Properties] in HyperTerminal, click <Configure> in the pop-up dialog box, and then select the baud rate of 115200 bps in the Console port configuration dialog box that appears, as shown in Figure 1-1, Figure 1-2.

Figure 1-1 Properties dialog box

Figure 1-2 Console port configuration dialog box

Step 5: Click the <Disconnect> button to disconnect the HyperTerminal from the switch and then click the <Connect> button to reconnect the HyperTerminal to the switch, as shown in Figure 1-3.

Figure 1-3 Connect and disconnect buttons

 

&  Note:

The new baud rate takes effect only after you disconnect and reconnect the HyperTerminal program.

 

Step 6: Press <Enter> to start downloading the program. The system displays the following information:

Now please start transfer file with XMODEM protocol.

If you want to exit, Press <Ctrl+X>.

Loading ...CCCCCCCCCC

Step 7: Choose [Transfer/Send File] in the HyperTerminal’s window, and click <Browse> in pop-up dialog box, as shown in Figure 1-4. Select the software you need to download, and set the protocol to XMODEM.

Figure 1-4 Send file dialog box

Step 8: Click <Send>. The system displays the page, as shown in Figure 1-5.

Figure 1-5 Sending file page

Step 9: After the download completes, the system displays the following information:

Loading ...CCCCCCCCCC done!

Step 10: Reset HyperTerminal’s baud rate to 9600 bps (refer to Step 4 and 5). Then, press any key as prompted. The system will display the following information when it completes the loading.

Bootrom updating.....................................done!

 

&  Note:

l      If the HyperTerminal’s baud rate is not reset to 9600 bps, the system prompts "Your baudrate should be set to 9600 bps again! Press enter key when ready".

l      You need not reset the HyperTerminal’s baud rate and can skip the last step if you have chosen 9600 bps. In this case, the system upgrades BootROM automatically and prompts “Bootrom updating now.....................................done!”.

 

III. Loading host software

Follow these steps to load the host software:

Step 1: Select <1> in Boot Menu and press <Enter>. The system displays the following information:

1. Set TFTP protocol parameter

2. Set FTP protocol parameter

3. Set XMODEM protocol parameter

0. Return to boot menu

 

Enter your choice(0-3):

Step 2: Enter 3 in the above menu to download the host software using XMODEM.

The subsequent steps are the same as those for loading the BootROM software, except that the system gives the prompt for host software loading instead of BootROM loading.

1.2.3  Loading Software Using TFTP through Ethernet Port

I. Introduction to TFTP

TFTP, one protocol in TCP/IP protocol suite, is used for trivial file transfer between client and server. It uses UDP to provide unreliable data stream transfer service.

II. Loading BootROM software

Figure 1-6 Local loading using TFTP

Step 1: As shown in Figure 1-6, connect the switch through an Ethernet port to the TFTP server, and connect the switch through the Console port to the configuration PC.

 

&  Note:

You can use one PC as both the configuration device and the TFTP server.

 

Step2: Run the TFTP server program on the TFTP server, and specify the path of the program to be downloaded.

 

  Caution:

TFTP server program is not provided with the H3C Series Ethernet Switches.

 

Step 3: Run the HyperTerminal program on the configuration PC. Start the switch. Then enter the Boot Menu.

At the prompt "Enter your choice(0-5):" in the Boot Menu, press <Ctrl+U>, and then press <Enter> to enter the BootROM update menu shown below:

SRPG bootrom update menu:

 

1. Set TFTP protocol parameter

2. Set FTP protocol parameter

3. Set XMODEM protocol parameter

0. Return to boot menu

 

Enter your choice(0-3):

Step 4: Enter 1 to in the above menu to download the BootROM software using TFTP. Then set the following TFTP-related parameters as required:

Load File name           :S7500.btm

Switch IP address        :1.1.1.2

Server IP address        :1.1.1.1

Step 5: Press <Enter>. The system displays the following information:

Are you sure you want update SRPG bootrom?Yes or No(Y/N)

Step 6: Enter Y to start file downloading or N to return to the Bootrom update menu. If you enter Y, the system begins to download and update the BootROM software. Upon completion, the system displays the following information:

Prepare for loading...OK! 

Loading........................................done

Bootrom updating..........done!

III. Loading host software

Follow these steps to load the host software.

Step 1: Select <1> in Boot Menu and press <Enter>. The system displays the following information:

1. Set TFTP protocol parameter

2. Set FTP protocol parameter

3. Set XMODEM protocol parameter

0. Return to boot menu

 

Enter your choice(0-3):3

Step 2: Enter 1 in the above menu to download the host software using TFTP.

The subsequent steps are the same as those for loading the BootROM program, except that the system gives the prompt for host software loading instead of BootROM loading.

 

  Caution:

When loading BootROM and host software using Boot menu, you are recommended to use the PC directly connected to the device as TFTP server to promote upgrading reliability.

 

1.2.4  Loading Software Using FTP through Ethernet Port

I. Introduction to FTP

FTP is an application-layer protocol in the TCP/IP protocol suite. It is used for file transfer between server and client, and is widely used in IP networks.

You can use the switch as an FTP client or a server, and download software to the switch through an Ethernet port. The following is an example.

II. Loading Process Using FTP Client

l           Loading BootROM software

Figure 1-7 Local loading using FTP client

Step 1: As shown in Figure 1-7, connect the switch through an Ethernet port to the FTP server, and connect the switch through the Console port to the configuration PC.

 

&  Note:

You can use one computer as both configuration device and FTP server.

 

Step 2: Run the FTP server program on the FTP server, configure an FTP user name and password, and copy the program file to the specified FTP directory.

Step 3: Run the HyperTerminal program on the configuration PC. Start the switch. Then enter the Boot Menu.

At the prompt "Enter your choice(0-5):" in the Boot Menu, press <Ctrl+U>, and then press <Enter> to enter the BootROM update menu shown below:

SRPG bootrom update menu:

 

1. Set TFTP protocol parameter

2. Set FTP protocol parameter

3. Set XMODEM protocol parameter

0. Return to boot menu

 

Enter your choice(0-3):

Step 4: Enter 2 in the above menu to download the BootROM software using FTP. Then set the following FTP-related parameters as required:

Load File name           :S7500.btm

Switch IP address        :10.1.1.2

Server IP address        : 10.1.1.1

FTP User Name            :7500

FTP User Password        :abc

Step 5: Press <Enter>. The system displays the following information:

Are you sure you want update SRPG bootrom?Yes or No(Y/N)

Step 6: Enter Y to start file downloading or N to return to the Bootrom update menu. If you enter Y, the system begins to download and update the program. Upon completion, the system displays the following information:

Prepare for loading...OK! 

Loading........................................done

Bootrom updating..........done!

l           Loading host software

Follow these steps to load the host software:

Step 1: Select <1> in Boot Menu and press <Enter>. The system displays the following information:

1. Set TFTP protocol parameter

2. Set FTP protocol parameter

3. Set XMODEM protocol parameter

0. Return to boot menu

Enter your choice(0-3):

Enter 2 in the above menu to download the host software using FTP.

The subsequent steps are the same as those for loading the BootROM program, except for that the system gives the prompt for host software loading instead of BootROM loading.

 

  Caution:

When loading BootROM and host software using Boot menu, you are recommended to use the PC directly connected to the device as TFTP server to promote upgrading reliability.

 

1.3  Remote Software Loading

If your terminal is not directly connected to the switch, you can telnet to the switch, and use FTP or TFTP to load BootROM and host software remotely.

1.3.1  Remote Loading Using FTP

I. Loading Process Using FTP Client

1)         Loading BootROM

As shown in Figure 1-8, a PC is used as both the configuration device and the FTP server. You can telnet to the switch, and then execute the FTP commands to download the BootROM program s7500.btm from the remote FTP server (with an IP address 10.1.1.1) to the switch.

Figure 1-8 Remote loading using FTP

Step 1: Download the software to the switch using FTP commands.

<H3C> ftp 10.1.1.1

Trying ...

Press CTRL+K to abort

Connected. 

220 WFTPD 2.0 service (by Texas Imperial Software) ready for new user

User(none):abc  

331 Give me your password, please

Password:

230 Logged in successfully

[ftp] get s7500.btm

200 Port command okay.

150 Opening ASCII mode data connection for s7500.btm.

...226 Transfer complete.

FTP: 1177900 byte(s) received in 4.594 second(s) 256.39K byte(s)/sec. 

[ftp] bye

 

&  Note:

When using different FTP server software on PC, different information will be output to the switch.

 

Step 2: Update the BootROM program on SRPU of the switch.

<H3C>boot bootrom s7500.btm slot 0

 This will update BootRom file on board 0 . Continue? [Y/N] y

 Board 0 upgrading BOOTROM, please wait...

 Upgrade board 0 BOOTROM succeeded! 

Step 3: Restart the switch.

<H3C> reboot

 

&  Note:

Before restarting the switch, make sure you have saved all other configurations that you want, so as to avoid losing configuration information.

 

2)         Loading host software

Loading the host software is the same as loading the BootROM program, except for that the file to be downloaded is the host software file, and that you need to use the boot boot-loader command to select the host software at reboot of the switch.

After the above operations, the BootROM and host software loading is completed.

Pay attention to the following:

l           The loading of BootROM and host software takes effect only after you restart the switch with the reboot command.

l           If the space of the Flash memory is not enough, you can delete the useless files in the Flash memory before software downloading.

l           No power-down is permitted during software loading.

II. Loading Process Using FTP Server

As shown in Figure 1-9, the switch is used as the FTP server. You can telnet to the switch, and then execute the FTP commands to download the BootROM program s7500.btm from the switch.

1)         Loading BootROM

Figure 1-9 Remote loading using FTP server

Step 1: As shown in Figure 1-9, connect the switch through an Ethernet port to the PC (with IP address 10.1.1.1)

Step 2: Configure the IP address of VLAN1 on the switch to 192.168.0.65, and subnet mask to 255.255.255.0.

 

&        Note:

You can configure the IP address for any VLAN on the switch for FTP transmission. However, before configuring the IP address for a VLAN interface, you have to make sure whether the IP addresses of this VLAN and PC are routable.

 

<H3C> system-view

System View: return to User View with Ctrl+Z.

[H3C] interface Vlan-interface 1

[H3C-Vlan-interface1] ip address 192.168.0.65 255.255.255.0

Step 3: Enable FTP service on the switch, configure the FTP user name to test, password to pass, and directory to FLASH root directory.

[H3C-Vlan-interface1] quit

[H3C] ftp server enable

[H3C] local-user test

New local user added.

[H3C-luser-test] password simple pass

[H3C-luser-test] service-type ftp ftp-directory flash:/

Step 4: Enable FTP client software on PC. Refer to Figure 1-10 for the command line interface in Windows operating system.

Figure 1-10 Command line interface

Step 5: Enter cd in the interface to switch to the path that the BootROM upgrade file is to be stored, and assume the name of the path is “D:\Bootrom”, as shown in Figure 1-11.

Figure 1-11 Switch to BootROM

Step 6: Enter “ftp 192.168.0.65” and enter the user name test, password pass, as shown in Figure 1-12, to log on the FTP server.

Figure 1-12 Log on the FTP server

Step 7: Use the put command to upload the file s7500.btm to the switch, as shown in Figure 1-13.

Figure 1-13 Upload file s7500.btm to the switch

Step 8: Configure s7500.btm to be the BootROM at reboot, and then restart the switch.

<H3C> boot bootrom s7500.btm slot 0

 This will update Bootrom on unit 1.  Continue? [Y/N] y

 Upgrading Bootrom, please wait...

 Upgrade Bootrom succeeded! 

<H3C> reboot

When rebooting the switch, use the file s7500.btm as BootROM to finish BootROM loading.

2)         Loading host software

Loading the host software is the same as loading the BootROM program, except for that the file to be downloaded is the host software file, and that you need to use the boot boot-loader command to select the host software at reboot of the switch.

 

&  Note:

l      The steps listed above are performed in the Windows operating system, if you use other FTP client software, refer to the corresponding user’s guide before operation.

l      Only the configurations steps concerning loading are illustrated here, for detailed description on the corresponding configuration commands, refer to the chapter “FTP and TFTP”.

 

1.3.2  Remote Loading Using TFTP

The remote loading using TFTP is similar to that using FTP. The only difference is that TFTP is used instead off FTP to load software to the switch, and the switch can only act as a TFTP client.

 

  Caution

l      SRPU software and LPU (line processing unit) software must be identical. Otherwise S7500 Ethernet Switches cannot work normally.

l      To keep the software of SRPU and LPU identical, you need to restart the LPU after you upgrade the host software of the SRPU of the S7500 series Ethernet switches.

l      S7506R switches feature the double SRPUs and active-standby switchover function. If a switch possesses two SRPUs, with the active-standby switchover function enabled, you can in turn upgrade and restart the two SRPUs with one SRPU being active. Although SRPU can be upgraded through hot backup, because the LPU must be restarted to keep identical with the SRPU’s software, your services will still be interrupted during the LPU restart period. Therefore, you are recommended to restart the whole switch straight after you upgrade the host software of the SRPU of the S7506R switch.

 


Chapter 2  Basic System Configuration & Debugging

2.1  Basic System Configuration

2.1.1  Basic System Configuration Tasks

Table 2-1 Basic system configuration tasks

Operation

Description

Related section

Enter system view from user view

Section 2.1.2  Entering System View from User View

Set the system name of the switch

Optional

Section 2.1.3  Setting the System Name of the Switch

Set the date and time of the system

Optional

Section 2.1.4  Setting the Date and Time of the System

Set the local time zone

Optional

Section 2.1.5  Setting the Local Time Zone

Set the summer time

Optional

Section 2.1.6  Setting the Summer Time

Set the CLI language mode

Optional

Section 2.1.7  Setting the CLI Language Mode

Return from current view to lower level view

Section 2.1.8  Returning from Current View to Lower Level View

Return from current view to user view

Section 2.1.9  Returning from Current View to User View

 

2.1.2  Entering System View from User View

Table 2-2 Enter system view from user view

Operation

Command

Description

Enter system view from user view

system-view

2.1.3  Setting the System Name of the Switch

Table 2-3 Set the system name of the switch

Operation

Command

Description

Enter system view

system-view

Set the system name of the switch

sysname sysname

Optional

By default, the name is H3C.

 

2.1.4  Setting the Date and Time of the System

Table 2-4 Set the date and time of the system

Operation

Command

Description

Set the current date and time of the system

clock datetime HH:MM:SS YYYY/MM/DD

Optional

 

2.1.5  Setting the Local Time Zone

This configuration task is to set the name of the local time zone and the difference between the local time zone and the standard UTC (universal time coordinated) time.

Table 2-5 Set the local time zone

Operation

Command

Description

Set the local time zone

clock timezone zone-name { add | minus } HH:MM:SS

Optional

By default, it is the UTC time zone.

 

2.1.6  Setting the Summer Time

This configuration task is to set the name, time range (start time and end time), and time offset of the summer timer. The operation here saves you from manually adjust the system time.

l           When the system reaches the specified start time, it automatically adds the specified offset to the current time, so as to toggle the system time to the summer time.

l           When the system reaches the specified end time, it automatically subtracts the specified offset from the current time, so as to toggle the summer time to normal system time.

Perform the following configuration in user view.

Table 2-6 Set the summer time

Operation

Command

Description

Set the name and time range of the summer time

clock summer-time zone-name one-off start-time start-date end-time end-date offset-time

clock summer-time zone-name  repeating { start-time start-date end-time end-date | start-time start-year start-month start-week start-day end-time end-year end-month end-week end-day } offset-time

Optional

 

2.1.7  Setting the CLI Language Mode

Table 2-7 Set the CLI language mode

Operation

Command

Description

Set the CLI language mode

language-mode { chinese | english }

Optional

By default, the command line interface (CLI) language mode is English.

 

2.1.8  Returning from Current View to Lower Level View

Table 2-8 Return from current view to lower level view

Operation

Command

Description

Return from current view to lower level view

quit

This operation will result in exiting the system if current view is user view.

 

2.1.9  Returning from Current View to User View

Table 2-9 Return from current view to user view

Operation

Command

Description

Return from current view to user view

return

The composite key <Ctrl+Z> has the same effect with the return command.

 

2.2  Displaying the System Status

You can use the following display commands to check the status and configuration information about the system. For information about protocols and ports, and the associated display commands, refer to relevant sections.

Table 2-10 System display commands

Operation

Command

Description

Display the current date and time of the system

display clock

You can execute the display command in any view

Display the version of the system

display version

Display the information about user terminal interfaces

display users [ all ]

Display the debugging status

display debugging [ interface interface-type interface-number ] [ module-name ]

 

2.3  System Debugging

2.3.1  Enabling/Disabling System Debugging

The Ethernet switch provides a variety of debugging functions. Most of the protocols and features supported by the Ethernet switch are provided with corresponding debugging functions. These debugging functions are a great help for you to diagnose and troubleshoot your switch system.

The output of debugging information is controlled by two kinds of switches:

l           Protocol debugging, which controls whether the debugging information of a protocol is output.

l           Terminal display, which controls whether the debugging information is output to a user screen.

The relation between the two switches is as follows:

Figure 2-1 Debugging information output

You can use the following commands to operate the two kinds of switches.

Perform the following operations in user view.

Table 2-11 Enable debugging and terminal display

Operation

Command

Description

Enable system debugging

debugging { all [ timeout inte