下文给大家带来LB旁路部署案例分析，希望能够给大家在实际运用中带来一定的帮助，负载均衡涉及的东西比较多，理论也不多，网上有很多书籍，今天我们就用亿速云在行业内累计的经验来做一个解答。
LB旁路部署案例
一、 需求
sysname NAT
#
system-working-mode standard
xbar load-single
password-recovery enable
lpu-type f-series
#
vlan 1
#
interface Serial1/0
#
interface Serial2/0
#
interface Serial3/0
#
interface Serial4/0
#
interface NULL0
#
interface GigabitEthernet0/0
port link-mode route
combo enable copper
ip address 192.168.34.4 255.255.255.0
#
interface GigabitEthernet0/1
port link-mode route
combo enable copper
ip address 100.1.46.4 255.255.255.0
nat outbound
nat server protocol tcp global 100.1.46.4 2323 inside 192.168.35.5 2323
#
interface GigabitEthernet0/2
port link-mode route
combo enable copper
#
interface GigabitEthernet5/0
port link-mode route
combo enable copper
#
interface GigabitEthernet5/1
port link-mode route
combo enable copper
#
interface GigabitEthernet6/0
port link-mode route
combo enable copper
#
interface GigabitEthernet6/1
port link-mode route
combo enable copper
#
scheduler logfile size 16
#
line class aux
user-role network-operator
#
line class console
user-role network-admin
#
line class tty
user-role network-operator
#
line class vty
user-role network-operator
#
line aux 0
user-role network-operator
#
line con 0
user-role network-admin
#
line vty 0 63
user-role network-operator
#
ip route-static 0.0.0.0 0 100.1.46.6
ip route-static 192.168.1.0 24 192.168.34.3
ip route-static 192.168.2.0 24 192.168.34.3
ip route-static 192.168.35.0 24 192.168.34.3
#
domain system
#
domain default enable system
#
role name level-0
description Predefined level-0 role
#
role name level-1
description Predefined level-1 role
#
role name level-2
description Predefined level-2 role
#
role name level-3
description Predefined level-3 role
#
role name level-4
description Predefined level-4 role
#
role name level-5
description Predefined level-5 role
#
role name level-6
description Predefined level-6 role
#
role name level-7
description Predefined level-7 role
#
role name level-8
description Predefined level-8 role
#
role name level-9
description Predefined level-9 role
#
role name level-10
description Predefined level-10 role
#
role name level-11
description Predefined level-11 role
#
role name level-12
description Predefined level-12 role
#
role name level-13
description Predefined level-13 role
#
role name level-14
description Predefined level-14 role
#
user-group systemLB关键配置：
interface GigabitEthernet1/0/1
port link-mode route
combo enable copper
ip address 192.168.0.1 255.255.255.0
#
interface GigabitEthernet1/0/2
port link-mode route
combo enable copper
ip address 192.168.35.5 255.255.255.0
loadbalance snat-pool pool
ip range start 192.168.35.5 end 192.168.35.5
#
server-farm sf
snat-pool pool
probe t1
#
real-server rs1
ip address 192.168.1.1
port 23
weight 150
server-farm sf
#
real-server rs2
ip address 192.168.2.2
port 23
weight 120
server-farm sf
#
virtual-server vs type tcp
port 2323
virtual ip address 192.168.35.5
default server-farm sf
service enable
#
ip route-static 0.0.0.0 0 192.168.35.3
#
acl basic 2000
rule 0 permit
security-zone name Trust
import interface GigabitEthernet1/0/2
#
security-zone name DMZ
#
security-zone name Untrust
#
security-zone name Management
#
zone-pair security source Any destination Any
packet-filter 2000
#
return五、 测试
外网主机telnet外网映射到LB的地址和端口，看是否可以访问到内部服务器
<Client>telnet 100.1.46.4 2323
Trying 100.1.46.4 ...
Press CTRL+K to abort
Connected to 100.1.46.4 ...
<ServerA>
<ServerA>
<ServerA>dis ip int brief
*down: administratively down
(s): spoofing (l): loopback
Interface Physical Protocol IP Address Description
GE0/0 down down -- --
GE0/1 up up 192.168.1.1 --
测试后可以正常访问到服务器A
退出登录后再尝试登录下，测试看是否可以轮询到另一个服务器
<ServerA>quit
The connection was closed by the remote host!
<Client>telnet 100.1.46.4 2323
Trying 100.1.46.4 ...
Press CTRL+K to abort
Connected to 100.1.46.4 ...
<ServerB>
<ServerB>dis ip int brief
*down: administratively down
(s): spoofing (l): loopback
Interface Physical Protocol IP Address Description
GE0/0 up up 192.168.2.2 --
LB>dis real-server statistics
Slot 1:
Real server: rs1
Total connections: 7
Active connections: 0
Max connections: 1
Connections per second: 0
Max connections per second: 1
Server input: 13601 bytes
Server output: 15872 bytes
Throughput: 0 bytes/s
Inbound throughput: 0 bytes/s
Outbound throughput: 0 bytes/s
Max throughput: 3612 bytes/s
Max inbound throughput: 1359 bytes/s
Max outbound throughput: 2253 bytes/s
Received packets: 252
Sent packets: 238
Dropped packets: 0
Received requests: 0
Dropped requests: 0
Sent responses: 0
Dropped responses: 0
Connection failures: 0
Real server: rs2
Total connections: 8
Active connections: 1
Max connections: 1
Connections per second: 0
Max connections per second: 1
Server input: 15552 bytes
Server output: 17213 bytes
Throughput: 0 bytes/s
Inbound throughput: 0 bytes/s
Outbound throughput: 0 bytes/s
Max throughput: 5796 bytes/s
Max inbound throughput: 2451 bytes/s
Max outbound throughput: 3345 bytes/s
Received packets: 288
Sent packets: 264
Dropped packets: 0
Received requests: 0
Dropped requests: 0
Sent responses: 0
Dropped responses: 0
Connection failures: 0
<LB>dis virtual-server statistics
Slot 1:
Virtual server: vs
Total connections: 15
Active connections: 1
Max connections: 2
Connections per second: 0
Max connections per second: 1
Client input: 29257 bytes
Client output: 33165 bytes
Throughput: 0 bytes/s
Inbound throughput: 0 bytes/s
Outbound throughput: 0 bytes/s
Max throughput: 5796 bytes/s
Max inbound throughput: 2451 bytes/s
Max outbound throughput: 3345 bytes/s
Received packets: 542
Sent packets: 504
Dropped packets: 0
六、 注意事项
看了以上关于LB旁路部署案例分析，如果大家还有什么地方需要了解的可以在亿速云行业资讯里查找自己感兴趣的或者找我们的专业技术工程师解答的，亿速云技术工程师在行业内拥有十几年的经验了。
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