Connecting the grounding cable 连接保护地线
Correctly connecting the grounding cable is crucial to lightning protection and EMI protection. To guarantee the grounding effect, use the grounding cable provided with the LB device.
!
设备保护地线的正确连接是防雷、防干扰的重要保障，请使用设备随机提供的保护地线正确接地。
Ground the LB device mounted on a workbench 工作台方式接地
Grounding strip 接地排
Ground the LB device mounted in a rack 机柜方式接地
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Installing a PFC interface card 安装PFC接口模块
PFC interface cards are not provided with the LB device. Prepare them yourself if required.设备不随机提供PFC接口模块，请您根据需求自行选购。
PFC interface cards are not hot swappable.PFC接口模块不支持热插拔。
Remove the filler panel 拆卸假面板
Install the PFC interface card 安装接口模块
3
3
1
2
Installing and removing a hard disk 安装与拆卸硬盘
Hard disks are not provided with the LB device. Prepare them yourself if required.设备不随机提供硬盘，请您根据需求自行选购。
!
For the system to identify the hard disk, use the hard disk from H3C.请采用H3C公司的硬盘，否则系统无法识别。
The hard disk is hot swappable. To avoid damaging the hard disk, unmount the hard disk before you remove it.硬盘支持热插拔，但在拔出存储介质前，请先执行umount卸载操作，以
免损坏存储介质。
Wear an ESD wrist strap when you install or remove a hard disk to protect the disk from ESD damage.安装和拆卸硬盘时，请佩戴防静电手腕以避免硬盘受到静电放电的损害。
Hold the hard disk by its two edges. Do not touch the components on the hard disk. Do not squeeze, rock, or hit the hard disk. 手接触硬盘时拿硬盘的两侧，不要触碰元器件或挤压、
振动、撞击硬盘。
Install a filler panel in the empty hard disk slot to prevent dust and other objects from entering the LB device.若不再安装硬盘时，请安装假面板，以避免灰尘或异物进入设备内部造成
静电吸附或损坏。
Install a hard disk 安装硬盘
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Installing a power module 安装电源模块
Only the L1000-E LB device supports both AC and DC power modules. Do not install AC and DC power modules on the same LB device. 仅L1000-E款型支持可插拔交、直流电源，
!
但不支持交、直流电源模块混插。
Before connecting the power cord, make sure the LB device is reliably grounded and is powered off. 在连接电源线前，需保证设备已正确接地。在连接电源线时，请确认设备电源
开关处于关闭状态。
DC
1
1
2
1
AC
21
3
For more information about the product and installation procedures, log in to www.h3c.com
2
Copyright © 2015, Hangzhou H3C Technologies Co., Ltd.
Copyright © 2015 杭州华三通信技术有限公司 版权所有，保留一切权利。
如需了解产品及安装方面的更多信息，请登录H3C网站 www.h3c.com.cn
3
进入系统视图
创建实服务组，并进入实服务组视图
配置实服务组的调度算法
配置
实服
配置实服务组中参与调度的实服务
务组
器数量限制
配置实服务组的可用条件
配置实服务组的故障处理方式
创建实服务器，并进入实服务器视图
配置实服务器的VSIP
配置实服务器的端口号
配置
配置实服务器的权值
实服
配置实服务器被调用的优先级
务器
指定实服务器所属的实服务组
创建虚服务器，并进入虚服务器视图
配置虚服务器的
VSIP
配置虚服务器的端口号
配置
虚服
指定虚服务器的默认实服务组、备
务器
份实服务组和持续性组
指定虚服务器引用的负载均衡策略
开启虚服务器的虚服务功能
配置IPv4地址
配置IPv6地址
配置IPv4地址
配置IPv6地址
server-farm-name
prefix-length ]
{ | | }
percentage
{ | | }
real-server-name
ipv4-address
port-number
weight-value
priority-value
server-farm-name
[
[ mask-length | mask ]
[ prefix-length ]
backup-server-farm-name ] [ sticky-name ]
virtual-server-name
{ | | } ]
port-number
policy-name
{ | |
} [ mask mask-length ] [ prefix
min-number max-number
lower-percentage upper-
ipv6-address
ipv4-address
ipv6-address
server-farm-name [
-
缺省情况下，不存在任何实服务组
缺省情况下，实服务组的调度算法为加权轮转算法
缺省情况下，实服务组中只有优先级最高的实服务器参
与调度
缺省情况下，实服务组中只要有一台实服务器可用，该
实服务组就被认为可用
缺省情况下，实服务组的故障处理方式为保持已有连接
缺省情况下，不存在任何实服务器
二者至少选其一缺省情况下，
实服务器没有IPv4和IPv6地址
缺省情况下，实服务器的端口号为0
缺省情况下，实服务器的权值为100
缺省情况下，实服务器被调用的优先级为4
缺省情况下，实服务器不属于任何实服务组
缺省情况下，不存在任何虚服务器
二者至少选其一
缺省情况下，虚服务器没有IPv4和IPv6地址
缺省情况下，IP/TCP/UDP类型虚服务器的端口号为0
二者至少选其一
缺省情况下，没有指定虚服务器的默认实服务组、备份
实服务组和持续性组；虚服务器没有引用任何负载均衡
策略
缺省情况，虚服务器的虚服务功能处于关闭状态
!
上述内容仅以四层服务器负载均衡为例简单介绍，有关服务器及其它负载均衡方式的详细介绍，请参见产品配套的配置指导、命令参考。
[Sysname] real-server rs1
三台服务器ServerA、ServerB和ServerC均可提供FTP服务，其硬
件配置Server A最高、Server B次之、Server C最低。
通过配置负载均衡，在考虑硬件性能的前提下让这三台服务器联
合提供FTP服务，并通过健康检测来监控这些服务器是否可达。
Server A
192.168.1.1:8080
Server B
192.168.1.2:8080
Server C
192.168.1.3:8080
Host
VSIP
61.159.4.100
IP network
LB device
[Sysname-rserver-rs1] ip address 192.168.1.1
[Sysname-rserver-rs1] port 8080
[Sysname-rserver-rs1] weight 150
[Sysname-rserver-rs1] server-farm sf
[Sysname-rserver-rs1] quit
#创建实服务器rs2，配置其IPv4地址为192.168.1.2、
端口号为8080、权值为120，并加入实服务组sf。
[Sysname] real-server rs2
[Sysname-rserver-rs2] ip address 192.168.1.2
[Sysname-rserver-rs2] port 8080
[Sysname-rserver-rs2] weight 120
[Sysname-rserver-rs2] server-farm sf
因产品软件版本不同，特性支持情况也会有所不同，请以产品实际情况为准。
!
(1) 配置实服务组
#创建ICMP类型的NQA模板t1。
<Sysname> system-view
[Sysname] nqa template icmp t1
[Sysname-nqatplt-icmp-t1] quit
#创建实服务组sf，配置其调度算法为加权轮转算法，并指定其健
康检测方法为t1。
[Sysname] server-farm sf
[Sysname-sfarm-sf] predictor round-robin
[Sysname-sfarm-sf] probe t1
[Sysname-sfarm-sf] quit
(2) 配置实服务器
#创建实服务器rs1，配置其IPv4地址为192.168.1.1、
端口号为8080、权值为150，并加入实服务组sf。
[Sysname-rserver-rs2] quit
#创建实服务器rs3，配置其IPv4地址为192.168.1.3、
端口号为8080、权值为80，并加入实服务组sf。
[Sysname] real-server rs3
[Sysname-rserver-rs3] ip address 192.168.1.3
[Sysname-rserver-rs3] port 8080
[Sysname-rserver-rs3] weight 80
[Sysname-rserver-rs3] server-farm sf
[Sysname-rserver-rs3] quit
(3) 配置虚服务器
#创建TCP类型的虚服务器vs，配置其VSIP为61.159.4.100，指定其
默认实服务组为sf，并开启其虚服务功能。
[Sysname] virtual-server vs type tcp
[Sysname-vs-tcp-vs] virtual ip address 61.159.4.100
[Sysname-vs-tcp-vs] default server-farm sf
[Sysname-vs-tcp-vs] service enable
[Sysname-vs-tcp-vs] quit
Layer 4 server load balancing configuration
Step Command
Enter system view.
Create a server farm and enter server
farm view.
Specify a scheduling algorithm for the
Configuring
a server
farm
Configurin
g a real
server
Configurin
g a virtual
server
!
server farm.
Specify the number of real servers to
participate in scheduling.
Set the criteria to determine whether
the server farm is available.
Specify the fault processing method for
the server farm.
Create a real server and enter real server view.
Configure an
IP address for
the real server.
Configure the port number for the real server.
Configure a weight for the real server.
Configure a priority for the real server. By default, the priority of a real server is 4.
Specify a server farm for the real server.
Create a virtual server and enter virtual
server view.
Configure a
VSIP for the
virtual server.
Configure the port number for the virtual server.
Specify the default server farm, backup
server farm, and persistence server farm for
the virtual server.
Specify an LB policy for the virtual server.
Enable the virtual service feature for the
virtual server.
For more information about server load balancing and other load balancing configurations, see the configuration guides and command references for the device.
Configure an IPv4 address.
Configure an IPv6 address.
Configure an IPv4 address.
Configure an IPv6 address.
prefix-length ]
percentage
name [
backup-server-farm-name ] [ sticky-name ]
server-farm-name
{ | |
} [ mask mask-length ] [ prefix
{ | | }
min-number max-number
lower-percentage upper-
{ | | }
real-server-name
ipv4-address
ipv6-address
port-number
weight-value
priority-value
server-farm-name
virtual-server-
{ | | } ]
ipv4-address [ mask-length | mask ]
ipv6-address [ prefix-length ]
port-number
server-farm-name [
policy-name
N/A
By default, no server farm is created.
By default, the scheduling algorithm for a server
farm is weighted round robin.
By default, the real servers with the highest
priority participate in scheduling.
By default, when a minimum of one real server
is available, the server farm is available.
By default, the fault processing method is
All available connections are kept.
By default, no real server is created.
By default, no IPv4 or IPv6 address is
configured for a real server.
By default, the port number of a real server is 0.
By default, the weight of a real server is 100.
By default, a real server does not belong to
any server farms.
By default, no virtual server is created.
By default, no IPv4 or IPv6 address is
configured for a virtual server.
By default, the port number is 0 for the virtual
server of the IP, UDP, or TCP type.
By default, no default server farm, backup
server farm, or persistence server farm is
specified for a virtual server, and the virtual
server does not reference any LB policies.
By default, the virtual service feature is
disabled for the virtual server.
Configuration example
Network requirements
Server A, Server B, and Server C provide FTP services, and are in
descending order of hardware configuration.
Configure load balancing on the LB device to distribute user
requests among the servers based on their hardware
performance, and use health monitoring to monitor the
reachability of the servers.
Server A
192.168.1.1:8080
Server B
192.168.1.2:8080
Server C
192.168.1.3:8080
Host
VSIP
61.159.4.100
IP network
LB device
Configuration procedures
1. Configure a server farm:
# Create ICMP-type NQA template t1.
<Sysname> system-view
[Sysname] nqa template icmp t1
[Sysname-nqatplt-icmp-t1] quit
# Create server farm sf, and specify the scheduling algorithm as
weighted round robin and health monitoring method as t1.
[Sysname] server-farm sf
[Sysname-sfarm-sf] predictor round-robin
[Sysname-sfarm-sf] probe t1
[Sysname-sfarm-sf] quit
2. Configure real servers:
# Create real server rs1 with IPv4 address 192.168.1.1, port
number 8080, and weight 150, and add it to server farm sf.
[Sysname] real-server rs1
[Sysname-rserver-rs1] ip address 192.168.1.1
[Sysname-rserver-rs1] port 8080
[Sysname-rserver-rs1] weight 150
[Sysname-rserver-rs1] server-farm sf
[Sysname-rserver-rs1] quit
# Create real server rs2 with IPv4 address 192.168.1.2, port
8080, and weight 120, and add it to server farm sf.
[Sysname] real-server rs2
[Sysname-rserver-rs2] ip address 192.168.1.2
[Sysname-rserver-rs2] port 8080
[Sysname-rserver-rs2] weight 120
[Sysname-rserver-rs2] server-farm sf
[Sysname-rserver-rs2] quit
# Create real server rs3 with IPv4 address 192.168.1.3, port
number 8080, and weight 80, and add it to server farm sf.
[Sysname] real-server rs3
[Sysname-rserver-rs3] ip address 192.168.1.3
[Sysname-rserver-rs3] port 8080
[Sysname-rserver-rs3] weight 80
[Sysname-rserver-rs3] server-farm sf
[Sysname-rserver-rs3] quit
3. Configure a virtual server:
# Create TCP virtual server vs with VSIP 61.159.4.100, specify
its default server farm sf, and enable the virtual service function
on it.
[Sysname] virtual-server vs type tcp
[Sysname-vs-tcp-vs] virtual ip address 61.159.4.100
[Sysname-vs-tcp-vs] default server-farm sf
[Sysname-vs-tcp-vs] service enable
[Sysname-vs-tcp-vs] quit
Remarks
.
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