S12700 V200R012C00 Configuration Guide - Ethernet Switching

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, VLAN aggregation, MUX VLAN, VLAN termination, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.

About This Document
Ethernet Switching
- Overview of Ethernet Switching
- Basic Concepts of Ethernet
- Switching on the Ethernet
  - Layer 2 Switching
  - Layer 3 Switching
- Application Scenarios for Ethernet Switching
  - Building an Enterprise Network
- References for Ethernet Switching
MAC Address Table Configuration
- Overview of MAC Addresses
- Understanding MAC Address Tables
- Application Scenarios for MAC Address Tables
- Summary of MAC Address Table Configuration Tasks
- Licensing Requirements and Limitations for MAC Address Tables
- Default Settings for MAC Address Tables
- Configuring MAC Address Tables
- Configuring MAC Address Flapping Prevention
  - Configuring a MAC Address Learning Priority for an Interface
  - Preventing MAC Address Flapping Between Interfaces with the Same Priority
- Configuring MAC Address Flapping Detection
- Configuring the Switch to Discard Packets with an All-0 MAC Address
- Configuring the Switch to Discard Packets That Do Not Match Any MAC Address Entry
- Enabling MAC Address-triggered ARP Entry Update
- Enabling Port Bridge
- Configuring Re-marking of Destination MAC Addresses
- Maintaining MAC Address Tables
- Configuration Examples for MAC Address Tables
- Troubleshooting MAC Address Tables
  - MAC Address Entries Fail to Be Learned on an Interface
- FAQ About MAC Address Tables
- References for MAC Address Tables
Link Aggregation Configuration
- Overview of Link Aggregation
- Understanding Link Aggregation
- Application Scenarios for Link Aggregation
- Summary of Link Aggregation Configuration Tasks
- Licensing Requirements and Limitations for Link Aggregation
- Default Settings for Link Aggregation
- Configuring Link Aggregation in Manual Mode
- Configuring Link Aggregation in LACP Mode
- Configuring Preferential Forwarding of Local Traffic in a CSS
- Creating an Eth-Trunk Sub-interface
- Configuring an E-Trunk
- Maintaining Link Aggregation
- Configuration Examples for Link Aggregation
- Troubleshooting Link Aggregation
  - Traffic Is Unevenly Load Balanced Among Eth-Trunk Member Interfaces Because the Load Balancing Mode Is Incorrect
  - Eth-Trunk at Both Ends Cannot Be Up Because the Lower Threshold for the Number of Active Interfaces Is Incorrect
- FAQ About Link Aggregation
- References for Link Aggregation
VLAN Configuration
- Overview of VLANs
- Understanding VLANs
- Application Scenarios for VLANs
- Summary of VLAN Configuration Tasks
- Licensing Requirements and Limitations for VLANs
- Default Settings for VLANs
- Configuring VLANs
- Maintaining VLAN
- Configuration Examples for VLANs
- Troubleshooting VLANs
- FAQ About VLANs
- References for VLANs
VLAN Aggregation Configuration
- Overview of VLAN Aggregation
- Understanding VLAN Aggregation
- Application Scenarios for VLAN Aggregation
- Licensing Requirements and Limitations for VLAN Aggregation
- Default Settings for VLAN Aggregation
- Configuring VLAN Aggregation
- Example for Configuring VLAN Aggregation
- FAQ About VLAN Aggregation
  - How Do I Implement Communication Between Specific Sub-VLANs in a Super-VLAN
  - How Do I Make a Traffic Policy Take Effect in a Super-VLAN or Sub-VLAN
VLAN Switch Configuration
- Overview of VLAN Switch
- Application Scenarios for VLAN Switch
- Licensing Requirements and Limitations for VLAN Switch
- Default Settings for VLAN Switch
- Configuring VLAN Switch
- Maintaining VLAN Switch
- Example for Implementing Inter-VLAN Communication Using VLAN Switch
MUX VLAN Configuration
- Overview of MUX VLANs
- Licensing Requirements and Limitations for MUX VLANs
- Default Settings for MUX VLANs
- Configuring MUX VLANs
- Configuration Examples for MUX VLANs
  - Example for Configuring MUX VLAN on an Access Device
  - Example for Configuring MUX VLAN on an Aggregation Device
VLAN Termination Configuration
- Overview of VLAN Termination
- Application Scenarios for VLAN Termination
- Summary of VLAN Termination Configuration Tasks
- Licensing Requirements and Limitations for VLAN Termination
- Default Settings for VLAN Termination
- Configuring a Dot1q Termination Sub-interface to Implement Inter-VLAN Communication
- Configuring a Dot1q Termination Sub-interface and Connecting It to an L2VPN
- Configuring a Dot1q Termination Sub-interface and Connecting It to an L3VPN
- Configuring a QinQ Termination Sub-interface and Connecting It to an L2VPN
- Configuring a QinQ Termination Sub-interface and Connecting It to an L3VPN
- Configuration Examples for VLAN Termination
Voice VLAN Configuration
- Overview of Voice VLANs
- Voice VLAN Typical Networking
- Understanding Voice VLANs
- Application Scenarios for Voice VLANs
- Licensing Requirements and Limitations for Voice VLANs
- Default Settings for Voice VLANs
- Configuring a MAC Address-based Voice VLAN
- Configuring a VLAN ID-based Voice VLAN
- Configuration Examples for Voice VLANs
  - Example for Configuring a MAC Address-based Voice VLAN (IP Phones Send Untagged Voice Packets)
  - Example for Configuring a VLAN ID-based Voice VLAN (IP Phones Send Tagged Voice Packets)
QinQ Configuration
- Overview of QinQ
- Understanding QinQ
- Application Scenarios for QinQ
  - Public User Services on a Metro Ethernet Network
  - Enterprise Network Connection Through Private Lines
- Summary of QinQ Configuration Tasks
- Licensing Requirements and Limitations for QinQ
- Configuring Basic QinQ
- Configuring Selective QinQ
- Configuring the TPID Value in an Outer VLAN Tag
- Configuring the Switch to Add Double VLAN Tags to Untagged Packets
- Configuring QinQ Mapping
  - Configuring 1-to-1 QinQ Mapping
  - Configuring 2-to-1 QinQ Mapping
- Checking the VLAN Translation Resource Usage
- Configuration Examples for QinQ
- Troubleshooting QinQ
  - QinQ Traffic Forwarding Fails Because the Outer VLAN Is Not Created
  - QinQ Traffic Forwarding Fails Because the Interface Does Not Transparently Transmit the Outer VLAN ID
- FAQ About QinQ
- References for QinQ
VLAN Mapping Configuration
- Overview of VLAN Mapping
- Understanding VLAN Mapping
- Application Scenarios for VLAN Mapping
- Licensing Requirements and Limitations for VLAN Mapping
- Configuring VLAN ID-based VLAN Mapping
- Configuring 802.1p Priority-based VLAN Mapping
- Configuring MQC-based VLAN Mapping
- Displaying VLAN Translation Resource Usage
- Configuration Examples for VLAN Mapping
- Troubleshooting VLAN Mapping
  - Communication Failure After VLAN Mapping Configuration
GVRP Configuration
- Overview of GVRP
- Understanding GVRP
- Application Scenarios for GVRP
- Licensing Requirements and Limitations for GVRP
- Default Settings for GVRP
- Configuring GVRP
- Clearing GVRP Statistics
- Example for Configuring GVRP
- References for GVRP
VCMP Configuration
- Overview of VCMP
- Understanding VCMP
  - Basic Concepts of VCMP
  - VCMP Implementation
- Application Scenarios for VCMP
- Licensing Requirements and Limitations for VCMP
- Default Settings for VCMP
- Configuring VCMP
- Maintaining VCMP
  - Displaying VCMP Running Information
  - Clearing VCMP Running Information
- Example for Configuring VCMP to Implement Centralized VLAN Management
STP/RSTP Configuration
- Overview of STP/RSTP
- Understanding STP/RSTP
- Application Scenarios for STP/RSTP
- Summary of STP/RSTP Configuration Tasks
- Licensing Requirements and Limitations for STP/RSTP
- Default Settings for STP/RSTP
- Configuring STP/RSTP
- Configuring STP Parameters That Affect the STP Convergence Speed
- Configuring RSTP Parameters That Affect the RSTP Convergence Speed
- Configuring RSTP Protection Functions
- Configuring Parameters for Interoperation Between Huawei and Non-Huawei Devices
- Maintaining STP/RSTP
  - Clearing STP/RSTP Statistics
  - Monitoring STP/RSTP Topology Change Statistics
- Configuration Examples for STP/RSTP
  - Example for Configuring STP
  - Example for Configuring RSTP
- FAQ About STP/RSTP
- References for STP/RSTP
MSTP Configuration
- Overview of MSTP
- Understanding MSTP
- Application Scenarios for MSTP
- Summary of MSTP Configuration Tasks
- Licensing Requirements and Limitations for MSTP
- Default Settings for MSTP
- Configuring MSTP
- Configuring MSTP Multi-Process
- Configuring MSTP Parameters on an Interface
- Configuring MSTP Protection Functions
- Configuring MSTP Interoperation Between Huawei and Non-Huawei Devices
- Maintaining MSTP
  - Clearing MSTP Statistics
  - Monitoring the Statistics on MSTP Topology Changes
- Configuration Examples for MSTP
- FAQ About MSTP
- References for MSTP
VBST Configuration
- Overview of VBST
- Understanding VBST
- Application Scenarios for VBST
- Summary of VBST Configuration Tasks
- Licensing Requirements and Limitations for VBST
- Default Settings for VBST
- Configuring VBST
- Setting VBST Parameters That Affect VBST Convergence
- Configuring Protection Functions of VBST
- Setting Parameters for Interworking Between a Huawei Datacom Device and a Non-Huawei Device
- Maintaining VBST
  - Displaying VBST Running Information and Statistics
  - Clearing VBST Statistics
- Example for Configuring VBST
SEP Configuration
- Overview of SEP
- Understanding SEP
- Application Scenarios for SEP
- Summary of SEP Configuration Tasks
- Licensing Requirements and Limitations for SEP
- Configuring SEP
- Specifying an Interface to Block
- Configuring SEP Multi-Instance
- Configuring the Topology Change Notification Function
- Clearing SEP Statistics
- Configuration Examples for SEP
RRPP Configuration
- Overview of RRPP
- Understanding RRPP
- Application Scenarios for RRPP
- Summary of RRPP Configuration Tasks
- Licensing Requirements and Limitations for RRPP
- Default Settings for RRPP
- Configuring RRPP
- Configuring RRPP Snooping
- Clearing RRPP Statistics
- Configuration Examples for RRPP
- Troubleshooting RRPP
  - A Loop Occurs After the RRPP Configuration is Complete
  - After the Primary Port of a Transit Node on an RRPP Ring Network Becomes Down and Then Recovers, the Transit Node and Other Transit Nodes Cannot Register With the Master Node
- FAQ About RRPP
  - What Should Be Noted When Configuring RRPP?
- References for RRPP
ERPS (G.8032) Configuration
- Overview of ERPS
- Understanding ERPS
- Application Scenarios for ERPS
- Summary of ERPS Configuration Tasks
- Licensing Requirements and Limitations for ERPS
- Default Settings for ERPS
- Configuring ERPSv1
- Configuring ERPSv2
- Configuring the ERPS over VPLS Function
- Clearing ERPS Statistics
- Configuration Examples for ERPS
- Troubleshooting ERPS
  - Traffic Forwarding Fails in an ERPS Ring
- References for ERPS
LDT and LBDT Configuration
- Overview of LBDT and LDT
- Understanding LDT and LBDT
- Application Scenarios for LDT and LBDT
- Licensing Requirements and Limitations for LDT and LBDT
- Default Settings for LDT and LBDT
- Configuring LDT to Detect Loops
- Configuring Automatic LBDT
- Configuring Manual LBDT
- Configuration Examples for LBDT
Layer 2 Protocol Transparent Transmission Configuration
- Overview of Layer 2 Protocol Transparent Transmission
- Understanding Layer 2 Protocol Transparent Transmission
- Application Scenarios for Layer 2 Protocol Transparent Transmission
- Summary of Layer 2 Protocol Transparent Transmission Configuration Tasks
- Licensing Requirements and Limitations for Layer 2 Protocol Transparent Transmission
- Configuring Interface-based Layer 2 Protocol Transparent Transmission
- Configuring VLAN-based Layer 2 Protocol Transparent Transmission
- Configuring QinQ-based Layer 2 Protocol Transparent Transmission
- Configuring VPLS-based Layer 2 Protocol Transparent Transmission
- Configuration Examples for Layer 2 Protocol Transparent Transmission
- FAQ About Layer 2 Protocol Transparent Transmission
- References for Layer 2 Protocol Transparent Transmission

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Using E-Trunk Between Multiple PEs Connected to a CE

As shown in Figure 3-18, the Enhanced Trunk (E-Trunk) protects the links between CE1 and two PEs (PE1 and PE2) on the network. CE1 is connected to PE1 and PE2 using two Eth-Trunks in LACP mode. The two Eth-Trunks form an E-Trunk to implement backup and enhance the network reliability.

Figure 3-18 E-Trunk networking

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Updated: 2019-01-18

Document ID: EDOC1100038103

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