Overview of Ethernet Interfaces

NetEngine AR V300R019 CLI-based Configuration Guide - Interface Management

About This Document
Basic Configuration for Interfaces
- Overview of Interfaces
  - Interface Types
  - Interface Numbering Rules
- Licensing Requirements and Limitations for Basic Interfaces
- Configuring Basic Interface Parameters
- Clearing Interface Traffic Statistics
- FAQ About Basic Interfaces
  - How Do I View and Clear Traffic Statistics on an Interface?
  - How Do I Identify the Virtual Port of the Device?
Ethernet Interface Configuration
- Overview of Ethernet Interfaces
- Licensing Requirements and Limitations for Ethernet Interfaces
- Default Settings for Ethernet Interfaces
- Configuring a Port Group
- Configuring General Attributes of Ethernet Interfaces
- Configuring Layer 2 Ethernet Interfaces
- Configuring Layer 3 Ethernet Interfaces
- Maintaining Ethernet Interfaces
  - Configuring Loopback Detection
  - Clearing Interface Statistics
- Configuration Examples for Ethernet Interfaces
  - Example for Configuring the Auto-Negotiation Rate Range
  - Example for Configuring Interface Isolation
- Troubleshooting Ethernet Interfaces
  - Local and Remote Interfaces Have Different Duplex Modes, Rates, and Negotiation modes
- FAQ About Ethernet Interfaces
Serial Interface Configuration
- Overview of Serial Interfaces
- Licensing Requirements and Limitations for Serial Interfaces
- Application Scenarios for Serial Interfaces
  - Networking Diagram of Synchronous Serial Interfaces
- Default Settings for Serial Interfaces
- Configuring a Synchronous Serial Interface
- Configuring an Asynchronous Serial Interface
- Configuration Examples for Serial Interfaces
  - Example for Configuring Network Interworking by Using Synchronous Serial Interfaces
- FAQ About Serial Interfaces
  - When an SA Card Connects to an E1 Card, the Protocol Status Cannot Become Up. How Do I Solve the Problem?
Async Interface Configuration
- Overview of Async Interfaces
- Licensing Requirements and Limitations for Async Interfaces
- Default Settings for Async Interfaces
- Configuring an Async Interface
CE1/PRI Interface Configuration
- Overview of CE1/PRI Interfaces
- Licensing Requirements and Limitations for CE1/PRI Interfaces
- Application Scenarios for CE1/PRI Interfaces
- Default Settings for CE1/PRI Interfaces
- Configuring CE1/PRI Interface
- Maintaining a CE1/PRI Interface
  - Configuring Loopback Detection
  - Clearing Traffic Statistics on a CE1/PRI Interface
- Troubleshooting CE1/PRI Interfaces
  - CE1/PRI Interface Fails to Communicate with a Serial Interface (V.35DTE/DCE)
  - CE1/PRI Interface Fails to Communicate with an E1-F Interface
CT1/PRI Interface Configuration
- Overview of CT1/PRI Interfaces
- Licensing Requirements and Limitations for CT1/PRI Interfaces
- Application Scenarios for CT1/PRI Interfaces
- Default Settings for CT1/PRI Interfaces
- Configuring a CT1/PRI Interface
  - Configuring a CT1/PRI Interface (CT1 Mode)
  - Configuring a CT1/PRI Interface (PRI Mode)
- Maintaining a CT1/PRI Interface
  - Configuring Loopback Detection
  - Clearing Traffic Statistics on a CT1/PRI Interface
CE3 Interface Configuration
- Overview of CE3 Interfaces
- Licensing Requirements and Limitations for CE3 Interfaces
- Application Scenarios for CE3 Interfaces
- Default Settings for CE3 Interfaces
- Configuring a CE3 Interface to Work in E3 Mode
- Maintaining a CE3 Interface
  - Configuring Loopback Detection
  - Clearing Statistics on a CE3 Interface
E1-F Interface Configuration
- Overview of E1-F Interfaces
- Licensing Requirements and Limitations for E1-F Interfaces
- Application Scenarios for E1-F Interfaces
- Default Settings for E1-F Interfaces
- Configuring an E1-F Interface
  - Configuring an E1-F Interface (Unframed Mode)
  - Configuring an E1-F Interface (Framed Mode)
- Maintaining an E1-F Interface
  - Configuring Loopback Detection
  - Clearing Traffic Statistics on an E1-F Interface
- FAQ About Basic Interfaces
T1-F Interface Configuration
- Overview of T1-F Interfaces
- Licensing Requirements and Limitations for T1-F Interfaces
- Application Scenarios for T1-F Interfaces
- Default Settings for T1-F Interfaces
- Configuring a T1-F Interface
- Maintaining a T1-F Interface
  - Configuring Loopback Detection
  - Clearing Traffic Statistics on a T1-F Interface
E&M Interface Configuration
- Overview of E&M Interfaces
- Understanding E&M Interfaces
- Licensing Requirements and Limitations for E&M Interfaces
- Application Scenarios for E&M Interfaces
- Default Settings for E&M Interfaces
- Configuring Line Attributes for an E&M Interface
- Configuration Examples for E&M Interfaces
  - Example for Configuring E&M Interfaces in the Air Traffic Control Scenario
3G Cellular Interface Configuration
- Overview of 3G Cellular Interfaces
- Licensing Requirements and Limitations for 3G Cellular Interfaces
- Application Scenarios for 3G Cellular Interfaces
- Configuring a 3G Cellular Interface in Compliance with the WCDMA Standard
- Maintaining 3G Cellular Interfaces
- Configuration Examples for 3G Cellular Interfaces
- Troubleshooting 3G Cellular Interfaces
  - Users on a 3G Cellular Interface Fail to Be Authenticated Because the Authentication Configuration Is Incorrect
  - Dial-up Fails After a 3G Cellular Interface Is Configured with a Fixed IP Address in 3G+IPSec Scenario
- FAQ About 3G Cellular Interfaces
LTE Cellular Interface Configuration
- Overview of LTE Cellular Interfaces
- Understanding LTE Cellular Interfaces
- Licensing Requirements and Limitations for LTE Cellular Interfaces
- Application Scenarios for LTE Cellular Interfaces
- Summary of LTE Cellular Interface Configuration Tasks
- Default Settings for LTE Cellular Interfaces
- Setting Connection Parameters of LTE Cellular Interfaces
- Configuring C-DCC for Dial-up Connection
- Configuring PIN Management
- (Optional) Configuring the Function of Receiving and Sending SMS Messages
- (Optional) Configuring the SMS Alarm Function
- Maintaining LTE Cellular Interfaces
- Configuration Examples for LTE Cellular Interfaces
5G Cellular Interface Configuration
- Overview of 5G Cellular Interfaces
- Understanding 5G Cellular Interfaces
- Application Scenarios for 5G Cellular Interfaces
- Licensing Requirements and Limitations for 5G Cellular Interfaces
- Default Settings for 5G Cellular Interfaces
- Setting Connection Parameters for a 5G Cellular Interface
- Configuring Automatic 5G Link Recovery
  - Restarting the 5G Modem to Recover a 5G Link
  - Configuring 5G Link Recovery Based on NQA Test Results
- Configuring SIM Card Security Management
- Configuring the Function of Recording NR Signal Strength Logs
- Maintaining 5G Cellular Interfaces
  - Clearing Statistics on 5G Cellular Interfaces
  - Upgrade a 5G Modem
ISDN BRI Interface Configuration
- Overview of ISDN BRI Interfaces
- Licensing Requirements and Limitations for ISDN BRI Interfaces
- Application Scenarios for ISDN BRI Interfaces
  - Connecting a Router to an ISDN Network Through ISDN BRI Interfaces
- Default Settings for ISDN BRI Interfaces
- Configuring an ISDN BRI Interface
- Maintaining an ISDN BRI Interface
  - Configuring Loopback Detection
  - Clearing Traffic Statistics on an ISDN BRI Interface
POS Interface Configuration
- Overview of POS Interfaces
- Licensing Requirements and Limitations for POS Interfaces
- Default Settings for POS Interfaces
- Configuring a POS Interface
- Maintaining POS Interfaces
  - Configuring Loopback Detection
  - Clearing Interface Statistics
- Configuration Examples for POS Interfaces
  - Example for Setting Physical Parameters of a POS Interface
- Troubleshooting POS Interfaces
  - Different POS Interface Parameter Settings on Both Ends
CPOS Interface Configuration
- Overview of CPOS Interfaces
- Understanding CPOS Interfaces
- Licensing Requirements and Limitations for CPOS Interfaces
- Application Scenarios for CPOS Interfaces
  - Using CPOS Interfaces to Converge E1/T1 Lines
  - Using Optical Fibers or Wavelength Division Multiplexing (WDM) to Connect CPOS Interfaces
- Default Settings for CPOS Interfaces
- Configuring CPOS Interfaces to Connect Devices
- Configuring CPOS Interfaces to Converge E1 Lines
- Configuring CPOS Interfaces to Converge T1 Lines
- Maintaining CPOS Interface Configuration
  - Performing Loopback on a CPOS Interface
  - Clearing CPOS Interface Statistics
- Configuration Examples for CPOS Interfaces
- Troubleshooting CPOS Interfaces
  - The Physical Status of an E1 Channel Is Up and the Link Protocol Status Is Down, and a Line Loopback Is Detected
  - Two Routers Are Connected Through CPOS Interfaces, but the Link Layer Status of the Logical Channel Keeps Alternating Between Up and Down
ADSL Interface Configuration
- Overview of ADSL Interfaces
- Licensing Requirements and Limitations for ADSL Interfaces
- Understanding ADSL Interfaces
- Default Settings for ADSL Interfaces
- Configuring an ADSL Interface
- Configuration Examples for ADSL Interfaces
  - Example for Configuring an ADSL Interface
VDSL Interface Configuration
- Overview of VDSL Interfaces
- Licensing Requirements and Limitations for VDSL Interfaces
- Understanding VDSL Interfaces
- Default Settings for VDSL Interfaces
- Configuring a VDSL Interface in ATM Mode
- Configuring a VDSL Interface in PTM Mode
- Configuration Examples for VDSL Interfaces
  - Example for Connecting a VDSL Interface Working in ATM Mode to the Internet
G.SHDSL Interface Configuration
- Overview of G.SHDSL Interfaces
- Licensing Requirements and Limitations for G.SHDSL Interfaces
- Default Settings for G.SHDSL Interface
- Setting Uplink Parameters for a G.SHDSL Interface
- Configuration Examples for G.SHDSL Interfaces
  - Example for Configuring G.SHDSL Interfaces
- FAQ About G.SHDSL Interfaces
  - How Do I Solve the G.SHDSL Card Failure Problem?
IMA Configuration
- Overview of IMA
- Licensing Requirements and Limitations for IMA
- Default Settings for IMA
- Configuring IMA
  - Configuring an E1-IMA Interface
  - Configuring an IMA Group
- Configuration Examples for IMA
  - Example for Configuring an IMA Group
PON Interface Configuration
- Overview of PON Interfaces
- Understanding PON Interfaces
  - Upstream and Downstream Transmission
  - EPON and GPON
- Licensing Requirements and Limitations for PON Interfaces
- Default Settings for PON Interfaces
- Configuring Attributes of an EPON Interface
- Configuring Attributes of a GPON Interface
- Maintaining PON Interfaces
  - Clearing Traffic Statistics on a PON Interface
Logical Interface Configuration
- Overview of Logical Interfaces
- Default Settings for Logical Interfaces
- Licensing Requirements and Limitations for Logical Interfaces
- Configuring a Logical Interface
- Configuration Examples for Logical Interfaces
  - Example for Configuring FR Sub-Interfaces
  - Example for Configuring the Loopback Interface's IP Address to Be Borrowed

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Overview of Ethernet Interfaces

Ethernet interfaces, including Ethernet electrical and optical interfaces, are used in local area networks (LANs).

The following types of Ethernet interfaces are provided on a device to meet network requirements:

Layer 2 Ethernet interface: a physical interface that works at the data link layer and cannot be assigned an IP address. It is used to forward packets at Layer 2 and can be added to a VLAN to forward packets at Layer 3 through a VLANIF interface.
Layer 3 Ethernet interface: a physical interface that works at the network layer and can be assigned an IP address. It can be used to forward packets at Layer 3.

Layer 2 Ethernet interface

Layer 2 Ethernet interfaces include FE electrical interfaces, GE electrical interfaces, optical interfaces, 10GE optical interfaces, and GE optical interfaces.

Table 2-1 lists attributes of Layer 2 Ethernet interfaces.

Table 2-1 Attributes of Layer 2 Ethernet interfaces

Interface	Rate (Mbit/s)	Duplex Mode	Auto-Negotiation	Flow Control	Flow Control Auto-Negotiation
FE electrical interface	10	Full-duplex/half-duplex	Supported	Supported	Not supported
FE electrical interface	100	Full-duplex/half-duplex	Supported	Supported	Not supported
GE electrical interface	10	Full-duplex/half-duplex	Supported	Supported	Supported
	100	Full-duplex/half-duplex
	1000	Full-duplex
GE optical interface NOTE: After a GE copper module is installed on an optical interface of the 4GE-2S interface card, attributes of the optical interface are the same as those of a GE electrical interface.	100	Full-duplex	Supported NOTE: GE optical interfaces do not support auto-negotiation after FE optical modules are installed on the interfaces.	Supported	Supported
	1000	Full-duplex		Supported	Supported
10GE optical interface NOTE: Only the SRU-100H, SRU-200H, SRU-400HK, SRU-600HK, SRU-400H, and SRU-600H support the 10GE interface. SRU-100HH supports the 10GE interface. Only the AR6120-S, AR6121-S, and AR6140H-S support the 10GE interface. Only the AR6120, AR6121K, AR6121E, AR6121, AR6120-VW, and AR6140-16G4XG support the 10GE interface. The 2X10GL (2-Port 10GE Optical Ports Interface Card) support 10GE interfaces. For the mapping between the device and interface card, see AR-2X10GL-W (2-Port 10GE Optical Ports Interface Card).	1000 NOTE: A 10GE optical interface of SRU-400HK, SRU-600HK, SRU-400H, and SRU-600H device can work at the rate of 1000 Mbit/s after a GE optical module is installed. A 10GE optical interface of SRU-100HH device can work at the rate of 1000 Mbit/s after a GE optical module is installed. A 10GE optical interface of AR6120-S and AR6121-S device can work at the rate of 1000 Mbit/s after a GE optical module is installed. A 10GE optical interface of AR6120, AR6121K AR6121E, AR6121, AR6120-VW and AR6140-16G4XG device can work at the rate of 1000 Mbit/s after a GE optical module is installed.	Full-duplex	Supported NOTE: Only the SRU-400HK, SRU-600HK, SRU-400H, and SRU-600H can be configured to work in non-auto-negotiation mode. SRU-100HH can be configured to work in non-auto-negotiation mode. Only the AR6120-S, AR6121C-S, AR6121-S, and AR6140H-S can be configured to work in non-auto-negotiation mode. Only the AR6120, AR6121K, AR6121E, AR6121, and AR6120-VW can be configured to work in non-auto-negotiation mode.	Supported	Supported
	10000 NOTE: A 10GE optical interface can work at the rate of 1000 Mbit/s after a GE optical module is installed.	Full-duplex	Not supported	Supported	Not supported

Layer 3 Ethernet interface

Layer 3 Ethernet interfaces include FE electrical interfaces, GE electrical interfaces, FE optical interfaces, GE optical interfaces, and 10GE optical interfaces.

By default, an Ethernet interface works in auto-negotiation mode, which is recommended. If the negotiation succeeds, the two interfaces work at the same duplex mode and speed. The settings of the SPEED and DUPLEX parameters and auto-negotiation mode must be the same at the local and peer ends. Otherwise, negotiation may fail. The interface auto-negotiation mode, duplex mode and speed support depend on the device.
Combo interfaces do not support to insert copper transceiver module.

Table Attributes of Layer 3 Ethernet interfaces lists attributes of Layer 3 Ethernet interfaces.

Table 2-2 Attributes of Layer 3 Ethernet interfaces

Interface	Rate (Mbit/s)	Duplex Mode	Auto-Negotiation	Flow Control	Flow Control Auto-Negotiation
FE electrical interface	10	Full-duplex/half-duplex	Supported	Supported	Not supported
FE electrical interface	100	Full-duplex/half-duplex	Supported	Supported	Not supported
GE electrical interface	10	Full-duplex/half-duplex	Supported	Supported	Supported
	100	Full-duplex/half-duplex
	1000	Full-duplex
GE optical interface NOTE: After a GE copper module is installed on an optical interface of the 4GEW-S interface card, attributes of the optical interface are the same as those of a GE electrical interface.	100	Full-duplex	Supported NOTE: GE optical interfaces do not support auto-negotiation after FE optical modules are installed on the interfaces.	Supported	Supported
	1000	Full-duplex		Supported	Supported
XGE (10GE) optical interface NOTE: Only the SRU-100H, SRU-200H, SRU-400HK, SRU-600HK, SRU-400H, and SRU-600H support the 10GE interface. SRU-100HH supports the 10GE interface. Only the AR6120-S, AR6121-S, and AR6140H-S supports the 10GE interface. Only the AR6120, AR6121K, AR6121E, AR6121, AR6120-VW, and AR6140-16G4XG support the 10GE interface. The 2X10GL (2-Port 10GE Optical Ports Interface Card) support 10GE interfaces. For the mapping between the device and interface card, see AR-2X10GL-W (2-Port 10GE Optical Ports Interface Card).	1000 NOTE: A 10GE optical interface of SRU-400HK, SRU-600HK, SRU-400H, and SRU-600H device can work at the rate of 1000 Mbit/s after a GE optical module is installed. A 10GE optical interface of SRU-100HH device can work at the rate of 1000 Mbit/s after a GE optical module is installed. A 10GE optical interface of AR6120-S and AR6121-S device can work at the rate of 1000 Mbit/s after a GE optical module is installed. A 10GE optical interface of AR6120, AR6121K AR6121E, AR6121, AR6120-VW and AR6140-16G4XG device can work at the rate of 1000 Mbit/s after a GE optical module is installed.	Full-duplex	Supported NOTE: Only the SRU-400HK, SRU-600HK, SRU-400H, and SRU-600H can be configured to work in non-auto-negotiation mode. SRU-100HH can be configured to work in non-auto-negotiation mode. Only the AR6120-S, AR6121C-S, AR6121-S, and AR6140H-S can be configured to work in non-auto-negotiation mode. Only the AR6120, AR6121K, AR6121E, AR6121, and AR6120-VW can be configured to work in non-auto-negotiation mode.	Supported	Supported
	10000 NOTE: A 10GE optical interface can work at the rate of 1000 Mbit/s after a GE optical module is installed.	Full-duplex	Not supported	Supported	Not supported

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Updated: 2023-05-18

Document ID: EDOC1100112349

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