V7 Outbound基于ISP链路负载均衡典型配置

·       导入isp文件中有isp1和isp2，将目的地址匹配isp为isp1中的流量从链路组lg1中选择链路出去。

1. 创建ACL，将去往内网10.144.0.0/16网段地址进行转发，不进行LB的处理

system-view

System View: return to User View with Ctrl+Z.

[System] acl advanced 3510

[System-acl-ipv4-adv-3510] rule 0 permit ip destination 10.144.0.0 0.0.255.255

[System-acl-ipv4-adv-3510]quit

2. 创建ACL允许内网网段地址

[System] acl advanced 3500

[System-acl-ipv4-adv-3500] rule 0 permit ip source 10.0.0.0 0.255.255.255

[System-acl-ipv4-adv-3500] quit

3. 配置接口地址，并配置外网访问的link对应的接口开启nat server，并开启保持上一跳功能，保证外网访问内网的应答报文可以原路返回。

[System] interface GigabitEthernet 1/0/4

[System-GigabitEthernet1/0/4] ip address 211.64.145.50 255.255.255.252

[System-GigabitEthernet1/0/4] nat outbound 3500

[System-GigabitEthernet1/0/4] ip last-hop hold

 [System-GigabitEthernet1/0/4] quit

[System] interface GigabitEthernet 1/0/12

[System-GigabitEthernet1/0/12] ip address 222.173.104.238 255.255.255.252

[System-GigabitEthernet1/0/12] nat outbound 3500

[System-GigabitEthernet1/0/12] ip last-hop hold

 [System-GigabitEthernet1/0/12] quit

[System] interface GigabitEthernet 1/0/15

[System-GigabitEthernet1/0/15] ip address 222.173.116.222 255.255.255.252

[System-GigabitEthernet1/0/15] nat  server  global 222.173.116.222 inside 10.144.1.10

[System-GigabitEthernet1/0/15] nat outbound 3500

[System-GigabitEthernet1/0/15] ip last-hop hold

[System-GigabitEthernet1/0/15] quit

4. 导入ips文件

[System]loadbalance isp  file   lbispinfo_v1.5.tp

5. 配置ICMP类型的NQA探测模板t1，并配置每次探测结果发送机制

[System] nqa template icmp t1

[System-nqatplt-icmp-t1] reaction trigger per-probe

[System-nqatplt-icmp-t1] quit

6. 创建ACL将外网访问内网匹配NAT地址池中地址的流量，不进行LLB的负载分担，走转发模式。

[System] acl advanced 3501

[System-acl-ipv4-adv-3501] rule 0 permit ip destination 211.64.145.50 0

[System-acl-ipv4-adv-3501] rule 1 permit ip destination 222.173.104.238 0

[System-acl-ipv4-adv-3501] rule 1 permit ip destination 222.173.116.222 0

7. 配置链路组，配置为透传模式，并应用健康监测方法t1

# 创建Link1和Link2所在ISP1的链路组lg1，配置算法根据源IP地址和端口号进行的哈希算法。

[System] loadbalance  link-group lg1

[System-lb-lgroup-lg1] predictor hash  address  source-ip-port

[System-lb-lgroup-lg1] transparent enable

[System-lb-lgroup-lg1] probe t1

[System-lb-lgroup-lg1] quit

# 创建Link3所在ISP2的链路组lg2。

[System] loadbalance link-group lg2

[System-lb-lgroup-lg1] predictor hash  address  source-ip-port

[System-lb-lgroup-lg2] transparent enable

[System-lb-lgroup-lg1] probe t1

[System-lb-lgroup-lg2] quit

# 创建链路Link1、Link2，并属于链路组lg1。

[System] loadbalance link link1

[System-lb-link-link1] router ip 211.64.145.49

[System-lb-link-link1] link-group lg1

[System-lb-link-link1] quit

[System] loadbalance link link2

[System-lb-link-link2] router ip 222.173.104.237

[System-lb-link-link2] link-group lg1

[System-lb-link-link2] quit

# 创建链路Link3，并属于链路组lg2。

[System] loadbalance link link3

[System-lb-link-link3] router ip 222.173.116.221

[System-lb-link-link3] link-group lg2

[System-lb-link-link3] quit

8. 开启负载均衡功能

# 创建虚服务为全0网段，配置负载均衡策略lp，不匹配负载均衡策略的流量均走默认的链路组lg1，并开启虚服务。

[H3C] virtual-server vs type link-ip

[H3C-vs-link-ip-vs] virtual ip address 0.0.0.0

[H3C-vs-link-ip-vs] lb-policy lp

[H3C-vs-link-ip-vs] default link-group lg1

[H3C-vs-link-ip-vs] service enable

[H3C-vs-link-ip-vs] quit

9. 创建负载均衡均类、动作及策略

# 创建流量特征lc1，匹配ISP为联通的报文从lg1发出。

[System] loadbalance class lc1 type link-generic match-all

[System-lbc-link-generic-lc1] match 1 isp cnc

[System-lbc-link-generic-lc1] quit

# 新建选路策略，匹配流量特征lc1的报文从链路组lg1发出，配置fallback-action continue命令用来配置查找链路失败时继续匹配下一条引用规则。

[System] loadbalance action la1 type link-generic

[System-lba-link-generic-la1] link-group lg1

[System-lba-link-generic-la1] fallback-action continue

[System-lba-link-generic-la1] quit

# 创建负载均衡类lc2，将匹配去往内网Server网段的流量以及外网访问内网匹配NAT地址池中地址的流量进行转发。

[System] loadbalance class lc2 type link-generic match-any

[System-lbc-link-generic-lc2] match 1 acl 3510

[System-lbc-link-generic-lc2] match 2 acl 3501

[System-lbc-link-generic-lc2] quit

# 新建选路策略，匹配流量特征lc2的报文将匹配去往内网Server网段的流量以及外网访问内网匹配NAT地址池中地址的流量进行转发。

[System] loadbalance action la2 type link-generic

[System-lba-link-generic-la2] forward all

[System-lba-link-generic-la2] fallback-action continue

[System-lba-link-generic-la2] quit

# 设置default动作la3，使不匹配ISP表项的流量转发出去。

[System] loadbalance action la3 type link-generic

[System-lba-link-generic-la3] forward all

[System-lba-link-generic-la3] quit

# 创建负载均衡策略lp，使外网访问内网服务器的流量LB转发到内网Server。

[System] loadbalance policy lp type link-generic

[System-lbp-link-generic-lp] class lc1 action la1

[System-lbp-link-generic-lp] class lc2 action la2

[System-lbp-link-generic-lp]default-class action la3

[System-lbp-link-generic-lp] quit