H3C S12500 Series User manual

H3C S12500 Ethernet Interface Configuration
Examples
Copyright © 2013 Hangzhou H3C Technologies Co., Ltd. All rights reserved.
No part of this manual may be reproduced or transmitted in any form or by any means
without prior written consent of Hangzhou H3C Technologies Co., Ltd.
The information in this document is subject to change without notice.

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Contents
Introduction··································································································································································· 1
Prerequisites·································································································································································· 1
Example: Configuring Ethernet interfaces ·················································································································· 1
Network requirements ······················································································································································1
Requirements analysis·······················································································································································1
Software version used ······················································································································································2
Configuration restrictions and guidelines·······················································································································2
Configuration procedures ················································································································································2
Verifying the configuration···············································································································································2
Configuration files·····························································································································································3
Related documentation ················································································································································ 4

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Introduction
This document provides Ethernet interface configuration examples.
Prerequisites
The configuration examples in this document were created and verified in a lab environment, and all
the devices were started with the factory default configuration. When you are working on a live
network, make sure you understand the potential impact of every command on your network.
This document assumes that you have basic knowledge of Ethernet interfaces.
Example: Configuring Ethernet interfaces
Network requirements
As shown in Figure 1:
•Due to the restrictions of Server 1's network adapter, interface GigabitEthernet 3/0/2 can only
negotiate the half duplex mode. The rate of the other servers’ network adapters is 1000 Mbps.
•The rate of interface GigabitEthernet 3/0/1 is 1000 Mbps.
Configure interfaces GigabitEthernet 3/0/2 through GigabitEthernet 3/0/4 to autonegotiate their
transmission rate to avoid congestion on interface GigabitEthernet 3/0/1.
Manually configure the interface connecting the switch to Server 1 to operate in full duplex mode.
Figure 1 Network diagram
Requirements analysis
If you do not specify the speed options for autonegotiation, the transmission rate of GigabitEthernet
3/0/2, GigabitEthernet 3/0/3, and GigabitEthernet 3/0/4 negotiated with the servers is 1000
Server1Server2Server3
IP network
GE3/0/1
GE3/0/2
GE3/0/3
GE3/0/4

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Mbps, which might cause congestion on the outgoing interface GigabitEthernet 3/0/1. To solve this
problem, you can manually set the rate to 100 Mbps for GigabitEthernet 3/0/2, GigabitEthernet
3/0/3, and GigabitEthernet 3/0/4.
Because interface GigabitEthernet 3/0/2 can only negotiate the half duplex mode, you must
configure the interface to operate in full duplex mode.
Software version used
This configuration example was created and verified on S12500-CMW520-R1825P01.
Configuration restrictions and guidelines
When you configure Ethernet interfaces, follow these restrictions and guidelines:
•By default, copper GE interfaces autonegotiate their duplex mode.
•The half duplex mode cannot be configured for Ethernet interfaces.
•For interfaces to operate correctly, H3C recommends using the same rate and duplex mode
settings for interfaces at both ends of a link.
Configuration procedures
# Set the rate to 100 Mbps for interface GigabitEthernet 3/0/2, and configure the interface to
operate in full duplex mode.
<Sysname> system-view
[Sysname] interface GigabitEthernet 3/0/2
[Sysname-GigabitEthernet3/0/2] undo shutdown
[Sysname-GigabitEthernet3/0/2] speed 100
[Sysname-GigabitEthernet3/0/2] duplex full
# Set the rate to 100 Mbps for interface GigabitEthernet 3/0/3.
[Sysname] interface GigabitEthernet 3/0/3
[Sysname-GigabitEthernet3/0/3] undo shutdown
[Sysname-GigabitEthernet3/0/3] speed 100
# Set the rate to 100 Mbps for interface GigabitEthernet 3/0/4.
[Sysname] interface GigabitEthernet 3/0/4
[Sysname-GigabitEthernet3/0/4] undo shutdown
[Sysname-GigabitEthernet3/0/4] speed 100
Verifying the configuration
# Display the status and related information about interface GigabitEthernet 3/0/2.
[Sysname] display interface GigabitEthernet 3/0/2
GigabitEthernet3/0/2 current state: UP
IP Packet Frame Type: PKTFMT_ETHNT_2, Hardware Address: 00e0-fc00-6403
Description: GigabitEthernet3/0/2 Interface
Loopback is not set

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Media type is twisted pair, Port hardware type is 1000_BASE_T
100Mbps-speed mode, full-duplex mode
Link speed type is force link, link duplex type is force link
Flow-control is not enabled
The Maximum Frame Length is 9216
Broadcast MAX-ratio: 100%
Unicast MAX-ratio: 100%
Multicast MAX-ratio: 100%
Allow jumbo frame to pass
PVID: 1
Mdi type: auto
Link delay is 1(sec)
Port link-type: access
Tagged VLAN ID : none
Untagged VLAN ID : 1
Port priority: 2
Last clearing of counters: Never
Peak value of input: 70 bytes/sec, at 2009-02-18 11:53:07
Peak value of output: 60 bytes/sec, at 2009-02-17 10:45:20
Last 300 seconds input: 0 packets/sec 10 bytes/sec 0%
Last 300 seconds output: 0 packets/sec 0 bytes/sec 0%
Input (total): 7235 packets, 744158 bytes
183 unicasts, 5323 broadcasts, 1729 multicasts, - pauses
Input (normal): 7235 packets, 744158 bytes
183 unicasts, 5323 broadcasts, 1729 multicasts, 0 pauses
Input: 0 input errors, 0 runts, 0 giants, 0 throttles
0 CRC, 0 frame, 0 overruns, - aborts
- ignored, - parity errors
Output (total): 2006 packets, 128574 bytes
67 unicasts, 4 broadcasts, 1935 multicasts, - pauses
Output (normal): 2006 packets, 128574 bytes
67 unicasts, 4 broadcasts, 1935 multicasts, 0 pauses
Output: 0 output errors, - underruns, - buffer failures
0 aborts, 0 deferred, 0 collisions, 0 late collisions
- lost carrier, - no carrier
Configuration files
#
interface GigabitEthernet3/0/2
port link-mode bridge
speed 100
duplex full
#
interface GigabitEthernet3/0/3
port link-mode bridge
speed 100
#

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interface GigabitEthernet3/0/4
port link-mode bridge
speed 100
#
Related documentation
•H3C S12500 Routing Switch Series Interface Configuration Guide
•H3C S12500 Routing Switch Series Interface Command Reference