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An ONU connected to a GPON port of an OLT fails to go online normally, but the queried Run state of the ONU is displayed as offline by running the display ont info command on the OLT.

  Location Method

NOTE:

Going online refers to a process that after being powered on, an ONU registers with an OLT and sets up a management channel with the OLT. An ONU can be managed by the OLT and be configured with services only after going online.

When an ONU fails to go online, locate the fault based on the following fault symptoms and possible causes.

Possible Cause

Judgment Criterion

Troubleshooting Method

The SN configured on the OLT is different  from the actual SN of the ONU; hence, the ONU fails to pass authentication  and to go online.

 Run the display ont info command to query the ONU information. It is  found that the SN in the result is different from the actual ONU SN.

Run the ont add command to re-add an ONU  and specify the correct ONU SN and password.  NOTE:  The ONU with a different SN is regarded as a new one and is founded by the  OLT.

The actual distance between the ONU and  OLT exceeds the ranging compensation distance configured on the OLT.

Run the display port info command to  query the minimum logical reach (Min distance) and maximum logical reach (Max  distance) configured for the GPON  port. It is found that the actual distance between the ONU and OLT exceeds  the ranging compensation distance.  For example, the actual length of the optical fiber between the ONU and OLT  is about 25 km, which exceeds the ranging compensation distance of 0-20 km.

Run  the port range command to adjust the minimum logical reach and maximum  logical reach so that the actual distance between the ONU and OLT is within  the ranging compensation distance.  NOTE:  By default, the ranging compensation distance of a GPON port is from 0 km to  20 km.  According to Class B+, the maximum logical reach of a GPON port must not  exceed 60 km, and the difference between the minimum logical reach and  maximum logical reach must not exceed 20 km.

The OLT deactivates the ONU.

Run the display ont info command to query  the ONU information. It is found that Control flag is displayed as deactive.

Run the ont activate command to activate  an ONU.  NOTE:  When an ONU is activated, its optical module only receives optical signals  but does not transmit optical signals.

The laser on the PON port is disabled.

Run the display port info command to  query the information about the PON port. It is found that Laser switch is in  the Off state.

Run the port laser-switch command to  enable the laser on the PON port.  NOTE:  By default, the laser on a GPON port is enabled.

The PON port is faulty.

If  either of the following two situations occurs, the PON pot is faulty.  Run the display port state command to query the status of the PON port. It is  found that abnormal items exist in the query result. For example, the laser  status (Laser state) is abnormal and the transmit optical power (TX power)  exceeds the normal range (1.5-5.0 dBm).  Migrate the service to another port. It is found that the ONU goes online  normally.

Replace the optical module of the PON  port or replace the board.

The board or the slot is faulty.

     All the ONUs connected to the board fail to go online.

     Change the board to another slot. If the fault persist, replace the board.

 CAUTION:

To facilitate fault report, save the results of the following steps.

The parameters of the optical module in this topic comply with Class B+. Note that such parameters are slightly different from the parameters in Class C.

Procedure

1.When the queried Run state of the ONU is displayed as offline, check whether the OLT generates the following alarms. If such alarms are generated, clear them and check whether the fault is rectified. If the fault persists, proceed to 2.

The following alarms may be generated:

2.Check for the possible causes on the OLT and troubleshoot the faults accordingly. If the ONU still fails to go online after that, proceed to 3.

Possible Cause

Judgment Criterion

Troubleshooting Method

The SN configured on the OLT is different  from the actual SN of the ONU; hence, the ONU fails to pass authentication  and to go online.

Run  the display ont info command to query the ONU information. It is found that  the SN in the result is different from the actual ONU SN.

Run the ont add command to re-add an ONU  and specify the correct ONU SN and password.  NOTE:    The ONU with a different SN is regarded as a new one and is founded by the  OLT.

The actual distance between the ONU and  OLT exceeds the ranging compensation distance configured on the OLT.

Run the display port info command to  query the minimum logical reach (Min distance) and maximum logical reach (Max  distance) configured for the GPON port. It is found that the actual distance  between the ONU and OLT exceeds the ranging compensation distance.    For example, the actual length of the optical fiber between the ONU and OLT  is about 25 km, which exceeds the ranging compensation distance of 0-20 km.

Run  the port range command to adjust the minimum logical reach and maximum  logical reach so that the actual distance between the ONU and OLT is within  the ranging compensation distance.  NOTE:  By default, the ranging compensation distance of a GPON port is from 0 km to  20 km.  According to Class B+, the maximum logical reach of a GPON port must not  exceed 60 km, and the difference between the minimum logical reach and  maximum logical reach must not exceed 20 km.

The OLT deactivates the ONU.

Run the display ont info command to query  the ONU information. It is found that Control flag is displayed as deactive.

Run the ont activate command to activate  an ONU.  NOTE:    When an ONU is activated, its optical module only receives optical signals  but does not transmit optical signals.

The laser on the PON port is disabled.

     Run the display port info command to query the information about the PON  port. It is found that Laser switch is in the Off state.

Run the port laser-switch command to  enable the laser on the PON port.  NOTE:    By default, the laser on a GPON port is enabled.

The PON port is faulty.

If  either of the following two situations occurs, the PON pot is faulty.  Run the display port state command to query the status of the PON port. It is  found that abnormal items exist in the query result.

Replace the optical module of the PON  port or replace the board.

The board or the slot is faulty.

All the ONUs connected to the board fail  to go online.

Change the board to another slot. If the  fault persist, replace the board.

  3.Check for the possible causes on the ODN and troubleshoot the faults accordingly. If the ONU still fails to go online after that, proceed to 4.

 4.Check for the possible causes on the ONU and troubleshoot the faults accordingly. If the ONU still fails to go online after that, proceed to 5.

 5.Record the results of the preceding steps in the form for reporting a fault, fill in the form completely, and then submit the form to Huawei for technical support.

 6.The fault is rectified.

  More related topics:

An Overall Introduction of FTTH Technology at Huanetwork

Huawei will Hold Safe City Africa Summit at the End of April

Huawei GPON ONT Capability Sets Applied to FTTH Configuration

Huawei GPON ONU Capability Sets Applied to FTTB and FTTC Configuration

How to Restore Factory Default S5700-24TP-PWR-SI via BOOTMODE

Question:

“How to  Restore Factory Default S5700-24TP-PWR-SI via BOOTMODE

I have problem to go back to default configuration from BIOS mode, because I forget the username & password

I have entered the BOOT menu but I don’t see “Reset Console Password” menu, here is the menu 

BOOTROM  MENU

1. Boot with default mode 2. Enter serial submenu 3. Enter startup submenu 4. Enter ethernet submenu 5. Enter filesystem submenu 6. Modify BOOTROM password 7. Reboot

I have done CHANGING the startup submenu too, but the RESULT its still the same…”

Suggestion；

Try booting with default mode (option 1) — by selecting this option your device will boot the default configuration file, thus no console password will be set

  How Can I Identify a Combo Port on Huawei S5700

How Can I Identify a Combo Port on Huawei S5700? I use the switch S5700-28P-LI-AC most time.

You can use the following methods to identify a combo port on a switch:

1. Identify a combo port based on the interface identifier on the switch panel. If two ports

have the same ID but connects to different transmission media, the two ports are

multiplexed as a combo port.

2. Run the display interface command to display the combo port.

<Quidway> display interface gigabitethernet 1/0/1

…

IP Sending Frames’ Format is PKTFMT_ETHNT_2, Hardware address is

0025-9e80-2494

Port Mode: COMBO AUTO

Speed : 100, Loopback:

NONE

…

You can run the combo-port command to set the working mode of a combo port.

1 COMBO AUTO: The combo port automatically selects the working mode.

2 FORCE FIBER: The combo port is configured to work as an optical port.

3 FORCE COPPER: The combo port is configured to work as an electrical port.

  How to Configure the interface rate of Huawei S5700

First, you should know: Configure the Ethernet interface rate in auto negotiation or non self negotiation two modes:

1 In auto negotiation mode, interface speed Ethernet electrical interface is and to end electrical interface negotiation, if the negotiation

Interface speed and the actual request does not match, can manually configure the interfacerates to control negotiation results. For example,

The two orresponding equipment interconnection interface, interface rate since the negotiation is 10Mbit/s, and the actual requirements of the

100Mbit/s do not match, auto speed 100 interface rate implementation of configurable interface for 100Mbit/s.

2 In non auto negotiation mode, need to manually configure the interface speed, avoidcommunication failure situation.

Configuration:

Auto negotiation mode, configuration interface rate

1 The command: System-View, enter the system view.

2 The command: interface interface-type interface-number, enter the Ethernet interface view.

3 The command: auto speed {10 | 100 | 1000}* rate: configuration Ethernet interface. (FE

The interface does not support this 1000 parameters)

By default, the interface speed of Ethernet interface is the interface negotiation.

Non auto negotiation mode, configuration interface rate

1The command: System-View, enter the system view.

2 The command: interface interface-type interface-number, enter the Ethernet interface view.

3 The Command: undo negotiation auto, configure the Ethernet interface in non auto negotiation mode.

4 The command: speed {10 | 100 | 1000}, configure the speed of interface  Ethernet interface. (FE electric interface does not support 1000 this parameter)

By default, the maximum rate of Ethernet interface interface is interface support rate.

 More related topics:

The review of Huawei S5700S-28P-LI-AC

Huawei S series switches stack connection topology

Collecting diagnostic information for Huawei switches

The display diagnostic-information command provides outputs of multiple commonly used display commands. You can use this command to view diagnostic information about the switch, including the startup configuration, current configuration, interface information, time, and system version.

The display diagnostic-information [ file-name ] command displays the device diagnostic information on screen or saves the information to a text file (.txt). The device diagnostic information includes startup configuration, current configuration, interface information, time, and system version. The following is an example:

<HUAWEI> display diagnostic-information dia-info.txt

 This operation will take several minutes, please wait.........................

................................................................................

...                                                                             Info: The diagnostic information was saved to the device successfully.

The default path of the text file is flash:/. You can run the dir command in the user view to check whether the text file has been created.

When a fault occurs on the switch, provide the diagnostic information to the Huawei agent or Huawei immediately for fast fault location. 

If diagnostic information is displayed on the screen, you can press Ctrl+C to stop the display any time.

This command is used to collect diagnostic information for fault location. Executing this command may affect the system performance. For example, it may cause a high CPU usage. Therefore, do not run this when the switch is running normally. Do not run this command on multiple terminals connected to the switch at the same time. Otherwise, the CPU usage of the switch will increase sharply, causing system performance deterioration.

NOTE: 

All the commonly used terminal configuration programs can save display information to a file. For example, if you are using HyperTerminal on a Windows operating system, choose Transfer > Capture Text, enter a file name, and then click Start. After that, run the display diagnostic-information command. All the diagnostic information is displayed on the terminal screen and automatically saved in a file in the specified path.

This methods can be applied for all the Huawei switches, such as Huawei S9700, S6700 switch, S5700 switch, S3700 switch, S2700 Switch, S9300, S6300, S5300, S3300, S2300…

The more information about technical support you can consult with our engineer the e-mail address is as below: [email protected]

The Huawei S2700EI series switch is next-generation energy-saving 100M Ethernet intelligent switches - is deployed at the access layer of a campus network to provide high performance, multi-service, and highly reliable enterprise network.

  Huawei S2700EI Series Switches Characteristics:

PoE

The S2700EI PWR provides improved PoE solutions. You can configure whether and when a PoE port supplies power. The S2700EI PWR can use PoE power supplies with different power levels to provide -48V DC power for powered devices (PDs), such as IP phones, WLAN APs, and Bluetooth APs. As the power sourcing equipment (PSE), the S2700EI PWR complies with IEEE 802.3af and 802.3at (PoE+) and can supply power to non-standard PDs. PoE ports can work in power-saving mode. Each 802.3at-enabled interface can provide 30 W power, so the S2700EI can connect to high-power terminals.

Various Reliability Mechanisms

The S2700EI supports iStack, which virtualizes multiple switches into one logical switch. iStack improves the switching capacity and enhances reliability and scalability. The stacked switches are managed using a single IP address, which greatly reduces system operation and maintenance costs.

Besides STP, RSTP, and MSTP, the S2700EI also supports enhanced Ethernet reliability technologies such as Smart Link and RRPP, which implement millisecond-level protection switching and ensure network reliability.

  The S2700EI supports the Smart Ethernet Protection (SEP) protocol, which is a ring network protocol applied to the link layer of an Ethernet network. SEP provides fast switchover within several milliseconds without interrupting services. SEP features simplicity, high reliability, high switchover performance, convenient maintenance, and flexible topology and enables users to manage and plan networks conveniently.

The S2700EI supports G.8032, also called Ethernet Ring Protection Switch (ERPS). ERPS is based on traditional Ethernet MAC and bridging functions. It uses the mature Ethernet OAM and Ring Automatic Protection Switching (Ring APS or R-APS) technologies to implement fast protection switching on Ethernet. ERPS supports multiple services and provides flexible networking, reducing the OPEX and CAPEX.

  Flexible Service Control

The S2700EI supports various ACLs. ACL rules can be applied to VLANs to flexibly control traffic on interfaces and schedule resources in VLANs.

The S2700EI supports VLAN assignment based on interfaces, MAC addresses, protocols, and IP subnets. It applies to networks where users move frequently and networks demanding high security.

  The S2700EI supports GVRP, which dynamically distributes, registers, and propagates VLAN attributes to reduce the manual configuration workloads of network administrators and ensure correct VLAN configuration. In addition, the S2700EI supports SSHv2, HWTACACS, RMON, interface-based traffic statistics, and NQA to help in network planning and upgrading.

  Various Security Measures

The S2700EI supports DHCP snooping, which generates user binding entries based on MAC addresses, IP addresses, IP address leases, VLAN IDs, and interface numbers of users. The DHCP snooping function protects networks against common attacks such as bogus IP packet attacks, man-in-the-middle attacks, and bogus DHCP server attacks.

  The S2700EI can limit the number of MAC addresses learned on an interface to prevent packet flooding that occurs when an attacker frequently changes source MAC addresses.

  The S2700EI supports strict ARP learning. This feature prevents ARP spoofing attackers from exhausting ARP entries so that users can connect to the Internet normally. It provides IP source check to prevent DoS attacks caused by IP address spoofing.

The S2700EI supports centralized MAC address authentication and 802.1x authentication. It authenticates users based on static or dynamic user binding information such as the user name, IP address, MAC address, VLAN ID, and interface number. VLANs and ACLs can be applied to users dynamically.

  Comprehensive QoS Policies

The S2700EI supports complex traffic classification based on VLAN IDs, MAC addresses, IP protocols, source addresses, destination addresses, priorities, or TCP or UDP port numbers of packets. By limiting the traffic rate based on flows, the S2700EI implements line-speed forwarding on each interface to ensure high quality of the voice, video, and data services. Each interface supports eight queues and multiple queue scheduling algorithms such as WRR, SP, and WRR+SP.

Powerful Surge Protection Capability

The S2700 adopts a Huawei patented surge protection technique to prevent lightning induced overvoltage. All interfaces of the S2700 have a surge protection capability of 6 kV. The Huawei patented surge protection technique greatly reduces the possibility of lightning damages on the equipment even in atrocious environments or in scenarios where grounding cannot be implemented.

  The most popular Huawei S2700EI switch as below:

S2700-9TP-EI-AC

S2700-9TP-PWR-EI

S2700-26TP-PWR-EI

S2750-28TP-EI-AC

S2700-52P-PWR-EI

Huawei AR150 & AR200 & AR1220 & AR2200 & AR3200 Series Enterprise Routers Configuration Guide: Example for outputting logs to the log file

  Networking Requirements

As shown in Figure 1, RouterA connects to the FTP server through the network. The network administrator wants to use the FTP server to view logs generated by RouterA and learn operations on RouterA.

  NOTE

FTP cannot secure secure file transfer. SFTP is recommended on networks that require high security.

Figure 1 Networking diagram for outputting logs to the log file

Huawei router Configuration Roadmap

The configuration roadmap is as follows:

1. Enable the information center.

2. Configure a channel and a rule for outputting logs to a log file so that logs are saved in the log file.

3. Configure RouterA to transfer the log file to the FTP server so that the network

administrator can use the FTP server to view logs generated by RouterA.

  Procedure

Step 1 Enable the information center.

<Huawei> system-view

[Huawei] sysname RouterA

[RouterA] info-center enable

  Step 2 Configure a channel and a rule for outputting logs to a log file.

# Configure a channel for outputting logs to a log file.

  [RouterA] info-center logfile channel channel6

  NOTE

By default, channel 9 is used to send logs to a log file. If the default setting is used, skip this step.

  # Configure a rule for outputting logs to a log file.

[RouterA] info-center source ip channel channel6 log level warning

  Step 3 Configure RouterA to transfer the log file to the FTP server.

# Log in to the FTP server.

<RouterA> ftp 10.1.1.1

Trying 10.1.1.1 ...

Press CTRL+K to abort

Connected to 10.1.1.1.

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

User(10.1.1.1:(none)):huawei

331 Give me your password, please

Enter password:

230 Logged in successfully

# Configure RouterA to transfer the log file to the FTP server.

[RouterA-ftp] put sd1:/logfile/log.log

200 PORT command okay

150 "D:\UPDATE\log.log" file ready to receive in ASCII mode

226 Transfer finished successfully.

FTP: 2761463 byte(s) sent in 26.062 second(s) 105.95Kbyte(s)/sec.

[RouterA-ftp] quit

  Step 4 Verify the configuration.

# View information recorded by the channel.

<RouterA> display info-center

Information Center: enabled

Log host:

Console:

channel number: 0, channel name: console

Monitor:

channel number: 1, channel name: monitor

SNMP Agent:

channel number: 5, channel name: snmpagent

Log buffer:

enabled

max buffer size: 1024, current buffer size: 512

current messages: 204, channel number: 4, channel name: logbuffer

dropped messages: 0, overwritten messages: 0

Trap buffer:

enabled

max buffer size: 1024, current buffer size: 256

current messages: 256, channel number: 3, channel name: trapbuffer

dropped messages: 0, overwritten messages: 29

Logfile:

channel number: 6, channel name: channel6, language: English

Information timestamp setting:

log - date, trap - date, debug - date

Sent messages = 1514, Received messages = 1514

# View the received log file on the FTP server.

----End

  Configuration Files

l Configuration file of RouterA

#

sysname RouterA

#

info-center source IP channel 6 log level warning

info-center logfile channel 6

#

interface GigabitEthernet1/0/0

ip address 10.2.1.1 255.255.0.0

#

ip route-static 10.1.0.0 255.255.0.0 10.2.1.2

#

Return

 More related:

Example for Configuring the Netstream Function to Account User Traffic 

Example for Configuring the SNMP Function to Implement Communication Between the Device and the NMS 

Example for Connecting Intranet Users to the Internet in NAT Address Pool Mode

Example for Connecting Intranet Users to the Internet in Easy IP Mode 

Huawei router configuration:

This example applies to all of huawei AR router V200R002C00 and later versions.

Networking Requirements

As shown in Figure 1, the router functions as the egress gateway of an enterprise. The R&D department and marketing department of the enterprise connect to Ethernet2/0/0 and Ethernet2/0/1 on the router. The server (a data monitoring device) that has the monitoring software installed connects to Ethernet2/0/2 on the router to analyze the captured packets. To ensure enterprise information security, configure local port mirroring on the router to help the server monitor all the packets sent by the R&D department and marketing department.

Figure 1 Local port mirroring networking

Procedure

Configure the router AR1200, I use it on the network.

#                                                                              

 observe-port interface Ethernet2/0/2  //Configure the local observing port.                                        

#                                                                               

interface Ethernet2/0/0                                                        

 mirror to observe-port inbound  //Configure Ethernet2/0/0 as the local mirrored port, and mirror only incoming packets on a port.                                              

#                                                                              

interface Ethernet2/0/1                                                        

 mirror to observe-port inbound  //Configure Ethernet2/0/1 as the local mirrored port, and mirror only incoming packets on a port.                                              

#

Verify the configuration.

Run the display observe-port command on the router to view the observing port configuration. In the command output, the Interface field displays Ethernet2/0/2.

Run the display mirror-port command on the router to view the mirrored port configuration. In the command output, the Mirror-port field displays Ethernet2/0/0 and Ethernet2/0/1.

Run the display interface command on the router to view packet statistics on Ethernet2/0/0, Ethernet2/0/1, and Ethernet2/0/2. The command output shows that the number of outgoing packets on Ethernet2/0/2 equals the total number of incoming packets on Ethernet2/0/0 and Ethernet2/0/1. You can also view all the packets received by Ethernet2/0/0 and Ethernet2/0/1 on the server, indicating that packets on Ethernet2/0/0 and Ethernet2/0/1 have been mirrored by the router.

Configuration Notes

A router can have only one observing port, which must be a LAN-side Ethernet port.

On the router, the packets on multiple ports can be mirrored to one observing port.

When you configure the observing port and mirrored port, correctly allocate bandwidth to the ports. If a GE interface is used as the mirrored port and an Ethernet interface is used as the observing port, the observing port bandwidth is insufficient. This may result in the loss of mirrored packets.

After an interface is configured as the observing port, do not perform other configurations on the interface. Otherwise, the local port mirroring function may be affected. For example, if the observing port transmits both mirrored packets and other service traffic, the observing port cannot identify the source of the packets. When the observing port becomes congested, mirrored packets may be discarded because these packets have lower priority than service traffic.

 More related:

Example for Configuring the SNMP Function to Implement Communication Between the Device and the NMS

Example for Connecting Intranet Users to the Internet in Easy IP Mode

Example for Configuring the Device as a PPPoE Client to Connect Users to the Internet

How to Configure the PPPoE Client on Huawei AR1200?

Before logging in to the switch S5700-28C-EI-24S through the web system, complete the following configurations:

1. Upload the web page file to the device through FTP or TFTP.

  2. Run the http server load file-name command to load the web page file.

  3. Enable the HTTP function and create a web user account.

[HUAWEI] http secure-server enable

[HUAWEI] http server enable

[HUAWEI] local-user admin password cipher admin

[HUAWEI] local-user admin service-type http

  4. Open the web browser on your PC, enter the management IP address of the switch, and press Enter to display the Login page. (Ensure that the PC and switch huawei have a reachable route to each other.) Enter the web user name, password, and verification code, and select a language for the web system, as shown in Figure 1.

Figure 1 Login page

When there are too many NEs, the concurrent conference calls affect the quality of the

conversation. You can assign the subnet number to optical ports, where the conference calls are configured, to allocate the NEs to different orderwire subnets. You can make the conference calls between NEs that are associated with the same orderwire subnet.

  Prerequisites

1 You must be an NM user with NE operator authority or higher.

2 Conference calls must be configured.

  Background Information

Set Huawei Transmission the length of the subnet number before dividing the orderwire subnet, which can be of one or two digits. Then configure the subnet number. You can obtain the subnet conference call number by overlaying the preceding digits of the conference call number by subnet number. For example, if the conference call number is 999 and the subnet number is 1, the subnet conference call number of the subnet 1 is 199.

  The optical interfaces with the same subnet number belong to the same orderwire subnet for OSN 8800.

The different optical interfaces on each NE can belong to different orderwire subnets. Hence, an NE can belong to several orderwire subnet at the same time.

  Procedure

Step 1 In the NE Explorer, click the NE and choose Configuration > Orderwire from the Function Tree.

  Step 2 Optional: Click the Auxiliary tab and set Subnet NO. Length.

NOTE         

When the Subnet NO. Length is set to 1, the Subnet of the Subnet No. for the Optical Interface is in the range of 0 to 9. When the Subnet NO. Length is set to 2, the Subnet of the Subnet No. for the OpticalInterface is in the range of 0 and 10 to 99.

  Step 3 Click the Subnet No. for the Optical Interface tab.

Step 4 Click Query to query information from the NE.

  Step 5 Select an optical port where conference calls are configured, and click the subnet field and enter a subnet number.

  NOTE

The optical ports that have the same subnet number belong to the same orderwire subnet.

  Step 6 Click Apply.

----End                

  More related Huawei SDH OSN 3500 topic, please visit:

How Can I Insert DHCPv6 Option Fields to DHCPv6 Packets? How Are Functions of Option Fields Classified?

The answer:

In S2700 &S3700& S5700 SV100R005 or S2700&S3700&S5700&S6700 SV100R006 and

SV200R001, S5700&S6700 SV200R002 and later versions, commands related to DHCPv6 Option are as follows:

  1 The dhcpv6 remote-id insert enable and dhcpv6 remote-id rebuild enable commands

apply to DHCPv6 relay, not DHCPv6 snooping.

  2 The dhcpv6 remote-id format command applies to DHCPv6 relay, not DHCPv6 snooping.

  3  The dhcpv6 {option18 | option37} insert enable command applies to DHCPv6 snooping,

not DHCPv6 relay. Option 18 and Option 37 can be configured in this command, which is

not defined by RFC. Only the server such as the ME60 supporting Option 18 and Option

37 can resolve the packets containing Option 18 and Option 37 when the server functions

as a DHCPv6 server. Non-Huawei products do not support this command.

Configuring interface-based traffic policing on Huawei NE40 router & 80E, you should configuring CAR on a layer 3 interface and configuring CAR on a layer 2 Port. Then check the configurations, here is the example for you.

  Checking the Configurations

After traffic policing is configured on an interface, you can view the CAR statistics on traffic in a specified direction on Layer 2 and 3 interfaces.

  Context

Run the following commands to check the previous configuration.

  The steps:

1 Using the display interface [ interface-type [ interface-number ] ] [ | { exclude | include }

regular-expression ] command to check the traffic information about an interface.

2 Using the display car statistics interface interface-type interface-number [ .subinterface

] { inbound | outbound } command to check the CAR statistics on a Layer 3

interface of a specified direction.

3 Using the display car statistics interface interface-type interface-number vlan vlan-id

{ inbound | outbound } command to check the CAR statistics on a Layer 2 port of a

specified direction.

----End

  Example

Using the display car statistics interface interface-type interface-number [ .sub-interface ]

{ inbound | outbound } command, you can view the statistics on an interface of a specified

direction. The statistics include the number of passed packets, number of passed bytes, and rate of passed packets; number of dropped packets, number of dropped bytes, and rate of dropped packets. For example:

  <HUAWEI> display car statistics interface gigabitEthernet 6/0/0 outbound

interface GigabitEthernet6/0/0

outbound

Committed Access Rate:

CIR 200(Kbps), PIR 0(Kbps), CBS 400(byte), PBS 500(byte)

Conform Action: pass

Yellow Action: pass

Exceed Action: discard

Passed: 840 bytes, 15 packets

Dropped: 56 bytes, 1 packets

Last 30 seconds passed rate: 0 bps, 0 pps

Last 30 seconds dropped rate: 0 bps, 0 pps

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Before configuring interface-based traffic policing on Huawei NE40-X3 & 80E, you should configuring CAR on a layer 3 interface and configuring CAR on a layer 2 Port.

  You can configure traffic policing in both inbound and outbound directions on Layer 2 main

interfaces by using a single token bucket or double token buckets.

  Context

The NE80E/40E supports configuration of traffic policing in both inbound and outbound

directions on Layer 2 interfaces.

1 To configure STB traffic policing, select parameters cir and cbs.

2 To configure DTB traffic policing, select parameters cir, pir, cbs and pbs.

3 To configure inbound traffic policing, select the parameter inbound.

4 To configure outbound traffic policing, select the parameter outbound.

  NOTE

1 You can configure traffic policing for the NE80E/40E Huawei NE5000E only on the physical GE and Ethernet interfaces.

  The configuration steps:

Step 1 Run:

system-view

The system view is displayed.

  Step 2 Run:

interface { ethernet | gigabitethernet } interface-number

The interface view is displayed.

  Step 3 Run:

portswitch

The Layer 2 interface view is displayed.

  Step 4 Run the following command as required:

1 Run: port default vlan vlan-id

A Layer 2 interface is added to a specified VLAN.

  NOTE

Please confirm the specified VLAN has been created before running this command.

2 Run:

port trunk allow-pass vlan { { vlan-id1 [ to vlan-id2 ] } & <1-10> | all }

The IDs of the VLANs allowed by the current interface are specified.

  Step 5 Run:

qos car { cir cir-value [ pir pir-value] } [ cbs cbs-value [ pbs pbs-value ] ]

[ green { discard | pass [ service-class class color color ] } | yellow { discard

| pass [ service-class class color color ] } | red { discard | pass [ serviceclass

class color color ] } ]* {inbound | outbound } [ vlan { vlan-id1 [to vlanid2

] &<1-10> } ] [ color-aware ]

  NOTE

CAR is configured on an interface. The parameter [ vlan { vlan-id1 [ to vlan-id2 ] &<1-10> } ] takes effect only on layer 2 interfaces, and VLAN ID must be configured. When this command is configured on a layer 3 interface, however, VLAN ID cannot be configured.

----End

  Follow-up Procedure

Before configuring interface-based traffic policing on Huawei router NE40E & 80E, you should configuring CAR on a layer 3 interface and configuring CAR on a layer 2 Port. Works for NE40e-X8 Huawei, too.

  By means of traffic policing, the total traffic and burst traffic that enter or leave a network can be controlled. Interface-based traffic policing controls all traffic that is received by an interface without considering the types of packets.

  Configuring CAR on a Layer 3 Interface

You can configure traffic policing in both inbound and outbound directions on Layer 3 main

interfaces by using a single token bucket or double token buckets.

  NOTE

You can configure traffic policing for the NE80E/40E only on the Ethernet, POS, Ethernet (excluding QinQ), Eth-Trunk sub-interface, ATM interface, ATM sub-interface, Atm-Trunk interface, Atm-Trunk sub-interface or IP-Trunk interface.

  The NE80E/40E supports configuration of traffic policing in both inbound and outbound

directions on major Layer 3 interfaces. Traffic policing includes two types: STB traffic policing and DTB traffic policing.

1 If the network traffic is simple, you can configure STB traffic policing with parameters

cir and cbs.

2 If the network traffic is complex, you need to configure DTB traffic policing with

parameters cir, pir, cbs, and pbs.

  The configuration steps:

Step 1 Run:

system-view

The system view is displayed.

  Step 2 Run:

interface interface-type interface-number

The interface view is displayed.

  Step 3 Run:

qos car { cir cir-value [ pir pir-value ] } [ cbs cbs-value [ pbs pbs-value ] ]

[ green { discard | pass [ service-class class color color ] } | yellow { discard

| pass [ service-class class color color ] } | red { discard | pass [ serviceclass

class color color ] } ]* {inbound | outbound } [ vlan { vlan-id1 [to vlanid2

] &<1-10> } ] [ color-aware ]

The interface is configured with CAR.

----End

  Follow-up Procedure

Question 1: What are common reasons why an OSPF neighbor relationship cannot change to full state on Huawei switch? I use the switch S5352C-EI and S2700-9TP-SI-AC most time on network time.

  Answer 1: Common causes of this problems are:

1 The OSPF network is a non-broadcast multiple access (NBMA) network, and no neighbor

is configured.

2 The interval at which the OSPF neighbor sends Hello packets is longer than the aging time

of the neighbor relationship.

3 In a stub area or not-so-stubby area (NSSA) area, some devices are not configured as stub

routers or NSSA routers.

4 The configuration of OSPF verification is incorrect.

5 The OSPF router IDs on two ends of the OSPF link are different.

6 The network types on two ends of the OSPF link are different.

7 The MTU values on two ends of the OSPF link are different.

8 OSPF is not enabled on the local or remote device.

9 The area numbers on two ends of the OSPF link are different.

  Question 2: Why do static routes imported to OSPF fail to take effect?

Huawei Transmission OptiX Metro 500 has two kinds of shapes. Compared with OptiX Metro 500and Metro 500 Ⅰ OptiX Ⅱ, increased battery function, product appearanceand installation in different ways. Type II device provides 220V AC power supply and battery charge and discharge function, the wall hanging typeinstallation.

The business interface rich

SDH interface: OSN 500 STM-1 optical interface specifications

PDH interface: OptiX Metro 500 can provide multiple E1, T1, E3, T3 interface

Ethernet interface: OptiX Metro 500 10/100M Ethernet interface

N * 64K interface: OptiX Metro 500 supports multiple N * 64K interface

Clock interface: OptiX Metro 500 provides external clock input and output interface

Switch interface: OptiX Metro 500 provides the switch input and output interface

Transparent data interface: OptiX Metro 500 provides asynchronoustransparent data port, the maximum rate of 19.2k

The ability to cross

Cross capacity OptiX Metro 500 devices is 6 × 6VC-4 crossover. Crosscapacity OptiX Metro 500 devices is 6 × 6VC-4 crossover.

Network and protection

Network and protection can be composed of chain type network, also canform a ring network, support single bidirectional path protection, linear multiplex section protection.

Network management

1 What is the backplane bandwidth?

Only the module switches S1700-28FR-2T2P-AC (with expansion slots, can flexibly change the portnumber) to have this concept, a fixed port switch is not the concept, andbackplane capacity fixed port of the switch and switching capacity is equal to the size. Backplane bandwidth determines the card (including the expansioncard is not installed in the slot) the maximum connection bandwidth and exchange engine room. The architecture of a modular switch is different, the real performance backplane bandwidth cannot completely and effectivelyrepresent the switch.

2 How to know Whether the backplane bandwidth is enough?

1, 2 times the number of) all X ports and port capacity (2 times in order to consider the port mode for full duplex case) should be less than the backplane bandwidth, can realize full duplex nonblocking switching, proof switch has thecondition of maximum data exchange performance of the play.

2, full configuration throughput (Mpps) = full configuration of the GE port number 1.488Mpps 1 Gigabit ports in the packet length as the theoreticalthroughput of 64 bytes per second when 1.488Mpps forwarding 1.488Mpackets of 64 bytes. For example, one can provide a maximum of 64 Gigabit ports on the switch, the full configuration throughput should reach 64 ×1.488Mpps = 95.2Mpps, can ensure that all port average speed (maximum rate theory to) work, provide a nonblocking packet switch. If a switch up to 176Gigabit ports, and claimed that the throughput is less than 261.8Mpps (176 x1.488Mpps = 261.8), then the user has reason to believe that the switch is used to structure design of obstruction.

The general is both meet the switch is qualified switches.

3 What is the switch packet forwarding rate?

The forwarding performance exchange engine (exchange capacity, forwarding capability)

The engine is due to the exchange as a modular switch packet core, so theperformance of this index can reflect the switch. For a fixed port switch,switching engine and network interface template is one, so the forwardingperformance parameters provided by the manufacturer is forwarding performance exchange engine, this index is the key to the performance of switches. 

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What is the essential condition of switches can be stacked?

  Only Huawei S2700 54P support stack with ordinary business port.

Huawei S3700 has stack port, but need special with SFP cable, also the version has requirements.

Huawei S5700 have to stack with special stacking line.

S5700EI, S5700SI(such as S5700-28C-PWR-SI )and S5710LI support stack cards to make stacked, does not support the service port stack. Stacking device through the connecting separate stack module and specialcable into the stack.

  S5700LI supports business export stack, stack the cards stacked not supported. Stackingdevice connected between the ports of call stack port. Stacking device connected between theuse of SFP+ stack cable or specific SFP+ stacked optical module and optical fiber.