Table of Contents

Chapter 1 Ethernet Interface Configuration. 1-1

1.1 Ethernet Interface Configuration. 1-1

1.1.1 Configuration Task List 1-1

1.1.2 Configuring LAN/WAN Mode for a 10GE Interface. 1-1

1.1.3 Basic Ethernet Interface Configuration. 1-3

1.1.4 Configuring Flow Control on an Ethernet Interface. 1-4

1.1.5 Configuring Physical State Change Suppression on an Ethernet Interface. 1-5

1.1.6 Configuring Loopback Testing on an Ethernet Interface. 1-5

1.1.7 Configuring a Manual Port Group. 1-6

1.1.8 Configuring Traffic Suppression for an Ethernet Interface. 1-7

1.1.9 Setting the Interval for Collecting Ethernet Interface Statistics. 1-8

1.1.10 Setting the Maximum Jumbo Frame Size for Ethernet Interfaces. 1-8

1.1.11 Configuring the MDI Mode of an Ethernet Interface. 1-9

1.1.12 Configuring the Source MAC Address for an Interface. 1-10

1.2 Displaying and Maintaining Ethernet Interfaces. 1-11

 

Chapter 1  Ethernet Interface Configuration

When configuring Ethernet interfaces, go to these sections for information you are interested in:

l           Ethernet Interface Configuration

l           Displaying and Maintaining Ethernet Interfaces

1.1  Ethernet Interface Configuration

1.1.1  Configuration Task List

Complete the following tasks to configure an Ethernet interface:

Task	Remarks
Configuring LAN/WAN Mode for a 10GE Interface	Optional
Basic Ethernet Interface Configuration	Optional
Configuring Flow Control on an Ethernet Interface	Optional
Configuring Physical State Change Suppression on an Ethernet Interface	Optional
Configuring Loopback Testing on an Ethernet Interface	Optional
Configuring a Manual Port Group	Optional
Configuring Traffic Suppression for an Ethernet Interface	Optional
Setting the Interval for Collecting Ethernet Interface Statistics	Optional
Setting the Maximum Jumbo Frame Size for Ethernet Interfaces	Optional
Configuring the MDI Mode of an Ethernet Interface	Optional
Configuring the Source MAC Address for an Interface	Optional

 

1.1.2  Configuring LAN/WAN Mode for a 10GE Interface

I. Introduction to LAN/WAN mode

According to the physical characteristics, a ten-GigabitEthernet (10GE) interface can work in LAN or WAN mode.

l           LAN mode. 10GE interfaces operating in this mode are used to provide network access for Ethernets. They receive and forward Ethernet packets.

l           WAN mode. 10GE interfaces operating in this mode are used to provide network access for SDH networks. They receive and forward synchronous digital hierarchy (SDH) packets across point-to-point connections only.

 

 

II. Introduction to J0/J1 overhead byte

SDH frames have diversified overhead bytes, which accomplish the operation and maintenance functions such as hierarchical management of the transport network. J0 and J1 are used to provide internetworking support between different countries, regions, or devices of different manufacturers.

The regenerator section trace byte J0 is usually set to a section access point identifier. The sending end keeps connected with the receiving end by sending this byte repeatedly.

The path trace byte J1, usually set to a high-order path access point identifier, functions in a similar to keep the connection with the receiving end of the path.

To ensure smooth communication, the J0 and J1 bytes should be matched respectively at the sending and receiving ends. For details about SDH and SDH overhead bytes, refer to related documents.

III. Configure a 10GE interface to operate in LAN/WAN mode

Follow these steps to configure a 10GE interface to operate in LAN/WAN mode:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enter ten-GigabitEthernet interface view	interface ten-gigabitEthernet interface-number	—
Configure the 10GE interface to operate in LAN/WAN mode	port-mode { lan | wan }	Optional By default, a 10GE interface operates in LAN mode.
Configure a value for J0/J1 bytes when the 10GE interface operates in WAN mode.	flag { j0 | j1 } sdh flag-value	Optional By default, the value of the J0/J1 bytes is 0.

 

 

1.1.3  Basic Ethernet Interface Configuration

Three types of duplex modes are available for Ethernet interfaces:

l           Full-duplex mode (full). Interfaces operating in this mode can send and receive packets simultaneously.

l           Half-duplex mode (half). Interfaces operating in this mode can either send or receive packets at a given time.

l           Auto-negotiation mode (auto). Interfaces operating in this mode determine their duplex mode through auto-negotiation.

If you configure the transmission rate for an Ethernet interface with the speed auto command, the transmission rate is determined through auto-negotiation.

Follow these steps to perform basic Ethernet interface configurations:

To do...	Use the command...	Remarks
Enter system view	system-view	—
Enter Ethernet interface view	interface interface-type interface-number	—
Set the descriptive information for the Ethernet interface	description text	Optional By default, the descriptive information is “interface index + Interface”.
Set the duplex mode	duplex { auto | full | half }	Optional auto by default.
Set the transmission rate	speed { 10 | 100 | 1000 | auto }	Optional auto by default.
Shut down the Ethernet interface	Shutdown	Optional By default, an Ethernet interface is in up state. Use the undo shutdown command to bring up the interface.

 

 

1.1.4  Configuring Flow Control on an Ethernet Interface

When flow control is enabled on both sides, if traffic congestion occurs at the ingress interface, it will send a Pause frame notifying the egress interface to temporarily suspend the sending of packets. The egress interface is expected to stop sending any new packets when it receives the Pause frame. In this way, flow controls helps to avoid the dropping of packets. Note that only after both the ingress and the egress interfaces have turned on their flow control will this be possible.

Follow these steps to enable flow control on an Ethernet interface:

To do...	Use the command...	Remarks
Enter system view	system-view	—
Enter Ethernet interface view	interface interface-type interface-number	—
Enable flow control	flow-control	Required Turned off by default

 

1.1.5  Configuring Physical State Change Suppression on an Ethernet Interface

An Ethernet interface operates in one of the two physical link states: up or down. During the suppression time, physical-link-state changes will not be propagated to the system. Only after the suppression time has elapsed will the system be notified of the physical-link-state changes by the physical layer. This functionality reduces the extra overhead occurred due to frequent physical-link-state changes within a short period of time.

Follow these steps to configure the up/down suppression time on an Ethernet Interface:

To do...	Use the command...	Remarks
Enter system view	system-view	—
Enter Ethernet interface view	interface interface-type interface-number	—
Configure the up/down suppression time of physical-link-state changes	link-delay delay-time	Required Defaults to 1 second.

 

1.1.6  Configuring Loopback Testing on an Ethernet Interface

You can enable loopback testing to check whether the Ethernet interface functions properly. Note that no data packets can be forwarded during the testing. Loopback testing falls into the following two categories:

l           Internal loopback testing: a loopback testing carried out within the device, if data packets sent from an Ethernet interface can be received by the same interface, the internal loopback testing is successful indicating that the interface is functioning properly.

l           External loopback testing: a loopback plug needs to be plugged into an Ethernet interface, if data packets sent from the interface is received by the same interface through the loopback plug, the external loopback testing is successful indicating that the interface is functioning properly.

Follow these steps to enable Ethernet interface loopback testing:

To do...	Use the command...	Remarks
Enter system view	system-view	—
Enter Ethernet interface view	interface interface-type interface-number	—
Enable loopback testing	loopback { external | internal }	Optional Disabled by default.

 

 

1.1.7  Configuring a Manual Port Group

To make the configuration task easier for users, certain devices allow users to configure on a single port as well as on multiple ports in a port group. In manual port group view, the user only needs to input the configuration command once and that configuration will apply to all ports in the port group. This effectively reduces redundant configurations.

Follow these steps to enter manual port group view:

To do...	Use the command...	Remarks
Enter system view	system-view	—
Enter manual port group view	port-group manual port-group-name	—

 

Follow these steps to configure a manual port group:

To do...	Use the command...	Remarks
Enter system view	system-view	—
Create a manual port group and enter manual port group view	port-group manual port-group-name	Required
Add Ethernet interfaces to the manual port group	group-member interface-list	Required

 

 

1.1.8  Configuring Traffic Suppression for an Ethernet Interface

You can suppress the broadcast and multicast traffic passing through an Ethernet interface.

When the traffic over the interface exceeds the pre-set threshold, the system will discard the extra packets to ensure that the network functions properly.

Follow these steps to configure the traffic suppression function for an Ethernet interface:

To do...		Use the command...	Remarks
Enter system view		system-view	—
Enter Ethernet interface view or port group view	Enter Ethernet interface view	interface interface-type interface-number	Use either command. If configured in Ethernet interface view, this feature takes effect on the current interface only; if configured in port group view, this feature takes effect on all the interfaces in the port group.
	Enter port group view	port-group { manual port-group-name | aggregation agg-id }
Configure broadcast suppression		broadcast-suppression { ratio | pps max-pps }	Optional By default, all broadcast traffic is allowed to pass through an interface, that is, broadcast traffic is not suppressed.
Configure multicast suppression		multicast-suppression { ratio | pps max-pps }	Optional Multicast suppression does not differentiate unknown multicasts from known multicasts. By default, all multicast traffic is allowed to pass through an Ethernet interface, that is, multicast traffic is not suppressed.

 

 

1.1.9  Setting the Interval for Collecting Ethernet Interface Statistics

Complete the following configuration tasks to configure the time interval for collecting interface statistics. Use the display interface command to display the interface statistics within the current interval.

Follow these steps to configure the interval for collecting Ethernet interface statistics:

To do…	Use the command…	Remarks
Enter system view	system-view	—
Enter Ethernet interface view	interface interface-type interface-number	—
Configure the time interval for collecting interface statistics	flow-interval interval	Required Defaults to 300 seconds.

 

1.1.10  Setting the Maximum Jumbo Frame Size for Ethernet Interfaces

Usually, an Ethernet interface discards received jumbo frames (frames larger than the standard Ethernet frame size) directly without processing them. To handle jumbo frames under a certain size, which may be received during large-throughput data switching like file transfer, you can set a jumbo Ethernet frame size limit on the switch.

Follow these steps to set the maximum jumbo frame size for the Ethernet interfaces on a board:

To do...	Use the command...	Remarks
Enter system view	system-view	—
Set the maximum size of the jumbo frames allowed to pass through an Ethernet interface on a board	jumboframe enable [ jumboframe-value ] slot slot-number	Optional 1552 bytes by default.

 

 

1.1.11  Configuring the MDI Mode of an Ethernet Interface

You can connect an Ethernet interface with a crossover or straight-through cable, depending on its medium dependent interface (MDI) mode. The MDI mode can be one of the following:

l           Across mode, where the Ethernet interface can be connected only to a crossover cable.

l           Normal mode, where the Ethernet interface can be connected only to a straight-through cable.

l           Auto mode, where the Ethernet interface can be connected to either a straight-through cable or a crossover cable.

Use the auto mode in normal cases. In case the interface in auto mode cannot recognize the type of the connected cable, set its MDI mode to across or normal.

Follow these steps to configure the MDI mode of an Ethernet Interface:

To do...	Use the command...	Remarks
Enter system view	system-view	—
Enter Ethernet interface view	interface interface-type interface-number	—
Configure the MDI mode of the Ethernet interface	mdi { across | auto | normal }	Optional The default is auto, that is, the system decides the role of the pins (to send packets or receive packets) through auto negotiation.

 

 

1.1.12  Configuring the Source MAC Address for an Interface

Normally, when a packet is forwarded by an S9500 switch on Layer 3, its source MAC address is that of the VLAN interface which the outbound interface corresponds to. However, It is required in some cases that the source MAC addresses of packets forwarded through different interfaces be different for forwarding policies to take effect on the peer devices.

By configuring the source MAC address for an interface, you can set the least octet of the source MAC addresses of the packets forwarded through the interface for forwarding policies to take effect on the peer devices.

Follow these steps to configure the source MAC address for an interface:

To do...	Use the command...	Remarks
Enter system view	system-view	—
Enter Ethernet interface view	interface interface-type interface-number	—
Configure the source MAC address	source-mac-tail last-byte	Required By default, the source MAC address of an interface is that of the corresponding VLAN interface.

 

 

 

1.2  Displaying and Maintaining Ethernet Interfaces

To do...	Use the command...	Remarks
Display the information of Ethernet interfaces	display interface [ interface-type [ interface-number ] ]	Available in any view
Display the brief information of Ethernet interfaces	display brief interface [ interface-type [ interface-number ] ] [ | { begin | include | exclude} text ]	Available in any view
Display the ports that are of a specified type	display port { hybrid | trunk }	Available in any view
Display the information about a manual port group or all the port groups	display port-group manual [ all | name port-group-name ]	Available in any view
Display the statistics on the packets passing through interfaces of specific type	display counters { inbound | outbound } interface [ interface-type ]	Available in any view
Display the rate statistics on the packets passing through the interfaces within the last sample time interval	display counters rate { inbound | outbound } interface [ interface-type ]	Available in any view
Display the alarm information of pluggable optical modules	display transceiver alarm interface [ interface-type interface-number ]	Available in any view
Display the values of the diagnostic parameters for pluggable optical modules	display transceiver diagnosis interface [ interface-type interface-number ]	Available in any view
Display the major parameters of pluggable optical modules	display transceiver interface [ interface-type interface-number ]	Available in any view
Display the radio frequency identification (RFID) information of pluggable optical modules	display transceiver manuinfo interface [ interface-type interface-number ]	Available in any view
Clear the statistics for Ethernet interfaces	reset counters interface [ interface-type [ interface-number ] ]	Available in user view