1.1 Introduction to Ethernet Interfaces
This section describes the Ethernet interfaces.
The Ethernet is flexible, simple, and easy to implement; therefore, it becomes an important local
area network (LAN) networking technology.
Table 1-1 shows the attributes of Ethernet electrical interfaces and Ethernet optical interfaces.
Table 1-1 Attributes of Ethernet interfaces
Interface
Type
Rate (Mbit/
s)
Auto-negotiation Non-negotiation
Full
Duplex
Half
Duplex
Full
Duplex
Half
Duplex
Ethernet
electrical
interface
10 Yes Yes Yes Yes
100 Yes Yes Yes Yes
1000 Yes No Yes No
Ethernet
optical
interface
100 No No Yes No
1000 Yes No Yes No
10000 No No Yes No
If the local interface works in auto-negotiation mode, the peer interface must also work in auto-
negotiation mode; otherwise, packet loss may occur.
1.2 Ethernet Interface Features Supported by the S7700
This section describes the Ethernet interface features supported by the S7700.
Port Group
The port group function enables you to configure multiple interfaces at the same time. You can
run commands in the port group view to configure all the interfaces in the group.
Auto-Negotiation
The auto-negotiation function allows interfaces on both ends of a link to select the same operating
parameters by exchanging capability information. Each interface sends its capability information
to the remote end and checks capabilities of the remote end. After both interfaces receive the
capability information from each other, they adopt the highest capability they support to
communicate with each other.
The interfaces negotiate the duplex mode, speed, and flow control parameters. After a successful
negotiation, the interfaces use the same duplex mode, speed, and flow control parameters.
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 1 Ethernet Interface Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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