When use the windows as NTP server, equipment not synchronization or continuance shock

Issue Description

When used Windows as NTP server, equipment have problem to synchronization NTP time, not synchronization or continuance shock. Use other equipment as the NTP server, can synchronization time.

Handling Process

Step 1: confirm the NTP server version, is usually have this problem in Windows 2003 or Windows 2008, other versions windows rarely have this problem.

Step 2: open debugging ntp all in the  equipment, check the response packet receive from server.

Packet from *.*.*.* (server address) to *.*.*.* (local address) on Vlanif1
Leap: 0, version: 3, mode: 4
Stratum., poll 1: 64, precision: 2 ^6
Rdel: 0.000, rdsp: 10110.870, refid LOCL.

The packet’s rdsp value is 10110.870, which is about 10000ms, can determine the problem  is that the rsp value in windows response packet is too large, lead to NTP does not function normally.

Root Cause

Windows 2003 and windows 2008 the two versions, the default NTP rdsp value is 10s, lead to Huawei equipment thinks it’s not normal, affected NTP synchronization.

Other windows versions, the default values are all 0, Huawei equipment can process normally, but have the possibilty of modified to a non-zero value.

Solution

Step 1: In Windows server, enter regedit to into regedit, change as follow:

HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ services W32Time \ Config \ LocalClockDispersion this field, from 10 change it to 0

For more information

Telephone: 852-30623083
Email: Sales@Thunder-link.com
Supports@Thunder-link.com
Website: http://www.thunder-link.com

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Which Switch Models Support the PoE Function

Issue Description

Which Switch Models Support the PoE Function?

Solution

Fixed switches

You can use the display device command to check a switch’s product name and determine whether the switch supports the PoE function according to its product name.

  • If the product name contains PWR, this switch model supports the PoE function.
  • If the product name does not contain PWR, this switch model does not support the PoE function.

Modular switches

Among modular switches, only the S7700 series switches support the PoE function. The PoE card of an S7700 is ES0D0G48VA00.

Why 802.1x or MAC Address Authentication Does Not Take Effect After Being Enabled and the Configuration Is Displayed in the Configuration File

Issue Description

Why 802.1x or MAC Address Authentication Does Not Take Effect After Being Enabled and the Configuration Is Displayed in the Configuration File?

Solution

If ACL resources are used up, the dot1x enable or mac-authen command run globally or on an interface does not take effect.

Contact information:

Telephone: 852-30623083
Email: Sales@Thunder-link.com
Supports@Thunder-link.com
Website: http://www.thunder-link.com

 

Why Are Only Two Optical Interfaces Displayed After a 4-Port Front subcard Is Installed in an S5700

Issue Description

Why Are Only Two Optical Interfaces Displayed After a 4-Port Front subcard Is Installed in an S5700?

Solution

This is because no extended channel rear card is installed in the switch.

An S5700SI or S5700EI switch can provide only two optical interfaces for front subcard. If a 4-port front subcard is installed, the switch must use an ES5D00ETPB00 extended channel rear subcard to provide the other two interfaces. Without an extended channel rear subcard, only two optical interfaces are displayed.

If a 4-port GE front subcard (ES5D000G4S01/ES5D00G4SA01) and an ES5D00ETPC00 rear stack card (working normally) are used together in a switch, only the first and second interfaces on the front card can work normally, and the other two interfaces cannot be used.

QQ图片20170915094002

If a 4-port 10GE front subcard (ES5D000X4S01) and an ES5D00ETPC00 rear stack card (working normally) are used together in a switch, only the first and third interfaces on the front subcard can work normally, and the other two interfaces cannot be used.

QQ图片20170915094053

NOTE:
The available interfaces on the ES5D000X4S01 front subcard are displayed as XGigabitEthernet */1/1 and XGigabitEthernet */1/2 on the CLI, corresponding to physical interfaces 1 and 3 on the front subcard.
* indicates a slot ID on the switch.

Which Are the Default Passwords Used on S Series Switches

Issue Description

Which Are the Default Passwords Used on S Series Huawei Switches?

Solution

On the S series switches of all versions:

  • When you log in a a switch through a console port, no default user name or password is provided. The system asks you to set the user name and password when you log in to the switch for the first time.
  • Before you log in to a switch through Telnet, create a Telnet account.

You can set the Telnet login authentication method in the VTY. If the password authentication mode is configured, set a password in the VTY. If the AAA local authentication mode is configured, set the user name and password in the AAA view. If the remote AAA authentication mode is configured, set the user name and password on the AAA server.

  • When you log in to a switch through web, your default user level is 0: visit level.

For other default passwords, see Table 1

NOTE:
By default, the console login password, BootROM password, and Telnet password are case-sensitive.

Table 1 Default passwords used by S series switches

QQ图片20170908113909

QQ图片20170908113949

QQ图片20170908114012

QQ图片20170908114034

Why POE Interface board is not registered on S9300

Issue Description

FAQ-Why POE Interface board is not registered on S9300?

Alarm Information

None

Handling Process

FAQ-Why POE Interface board is not registered on S9300?
A: There should be POE power on S9300 so that POE interface board can be registered. We can check elabel to confirm if board can support poe function or not. If one board can support POE function, the description should contain “POE Interface Card” like below:
Description=Quidway S9300,LE02G48VA,48-Port 10/100/1000BASE-T POE Interface Card(EA,RJ45,POE),32K MAC,1*1
Then you can confirm whether interface board is registered or not with command “display device”
There are four poe power slots on S9306 and S9312. But there is only one on S9303. There are some cautions:
1.Only AC power modules can be installed in PoE slots.
2.When inserted into a PoE slot, an AC power module is used as a PoE power module and provides power for powered devices (PDs) by using an Ethernet PoE electrical interface card. When inserted into slot PWR1 or PWR2, an AC power module provides power for the entire device.

Root Cause

None

Suggestions

None