完全手册之ADSL负载均衡配置(1)

本文介绍了双ADSL下的NTH的负载均衡设置问题。包括普通脚本，nat，还有IP等相关内容。那么，具体的代码，请从下文中参考。

说了很多关于数据库，服务器等负载均衡问题。现在，我们来讨论一下ADSL的负载均衡设置。主要我们需要对脚本进行“改造”，也就是NTH负载均衡的设置问题，文中包括很多脚本代码，希望大家能仔细的浏览，帮大家解决问题。

建立PPP拨号，把其中一条拨号名命名为ADSL1，另一个命明为ADSL2，并把内网网卡命名为LAN，然后等待拨号成功，设置参考下图

拨号成功后，PPPOE会自动添加IP地址和网关,找到地址和网关，复制下来，替换到下面脚本中，把A1IP替换成ADSL1的IP，A1网关替换成ADSL1的网关，把A2IP替换成ADSL2的IP，A2网关替换成ADSL2的网关.之后慢慢添脚本，添完成功后，把拨号的Add Default Route的勾去掉，看负载均衡是否可以正常工作！

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本文介绍了双ADSL下的NTH的负载均衡设置问题。包括普通脚本，nat，还有IP等相关内容。那么，具体的代码，请从下文中参考。

1.普通脚本设置

/ ip firewall nat

add chain=srcnat action=masquerade comment="3" disabled=yes

/ ip address

add address=A1IP interface=ADSL1 comment="1" disabled=no

add address=A2IP interface=ADSL2 comment="2" disabled=no

/ ip route

add dst-address=0.0.0.0/0 gateway=A1网关 routing-mark=1 comment="1"

add dst-address=0.0.0.0/0 gateway=A2网关 routing-mark=2 comment="2"

add dst-address=0.0.0.0/0 gateway=A1网关 comment="3"

2.添加NAT，NTH脚本

/ ip firewall mangle

add chain=prerouting in-interface=LAN protocol=tcp connection-state=new nth=1,1,0 action=mark-connection \\

new-connection-mark=1 passthrough=yes comment="A1 NTH" disabled=no

add chain=prerouting in-interface=LAN protocol=tcp connection-mark=1 action=mark-routing new-routing-mark=1 \\

passthrough=no comment="A1 NTH" disabled=no

add chain=prerouting in-interface=LAN protocol=tcp connection-state=new nth=1,1,1 action=mark-connection \\

new-connection-mark=2 passthrough=yes comment="A2 NTH" disabled=no

add chain=prerouting in-interface=LAN protocol=tcp connection-mark=2 action=mark-routing new-routing-mark=2 \\

passthrough=no comment="A2 NTH" disabled=no

/ ip firewall nat

add chain=srcnat connection-mark=1 action=src-nat to-addresses=A1IP to-ports=0-65535 comment="1" disabled=no

add chain=srcnat connection-mark=2 action=src-nat to-addresses=A2IP to-ports=0-65535 comment="2" disabled=no

编辑推荐

负载均衡技术基础专题

当前，无论在企业网、园区网还是在广域网上，即使按照当时最优配置建设的网络，业务量的发展都超出了过去..

本文介绍了双ADSL下的NTH的负载均衡设置问题。包括普通脚本，nat，还有IP等相关内容。那么，具体的代码，请从下文中参考。

3.同步NAT，ADSL动态IP，网关脚本:位置winbox-system-script 点“+ ”号，改name为sync，然后复制下面的脚本到source里

:local assign-address

:local new-address

:local status

:local x

:set x 2

:for i from=1 to=$x do={

:set status [/interface get [/interface find name=("ADSL" . $i)] running]

:if ($status=true) do={

:set new-address [/ip address get [/ip address find dynamic=yes interface=("ADSL" . $i)] address]

:set new-address [:pick $new-address 0 ([:len $new-address] -3)]

:set assign-address [/ip address get [/ip address find dynamic=no interface=("ADSL" . $i)] address]

:set assign-address [:pick $assign-address 0 ([:len $assign-address] -3)]

:set new-gateway [/ip address get [/ip address find dynamic=yes interface=("ADSL" . $i)] network]

:set adckip [/tool netwatch get [/tool netwatch find comment=$i] host]

:if ($assign-address != $new-address) do={ /ip address set [/ip address find comment=$i] address=$new-address network=$new-address broadcast=$new-address

/ip route set [/ip route find comment=$i] gateway=$new-gateway]

/ip firewall nat set [/ip firewall nat find comment=$i] to-addresses=$new-address

/ip route set [/ip route find comment=$i] gateway=$new-gateway]

}

:if ($new-gateway != $adckip) do={/tool netwatch set [/tool netwatch find comment=$i] host=$new-gateway]

}

}

}

4.添加ADSL1当线脚本A1Down，自动停用NTH负载均衡所需的参数，并将标记3的网关设为ADSL2的网关，位置winbox-system-script 点“+ ”号，改name为A1Down，然后复制下面的脚本到source里

:local new-gateway

:set new-gateway [/ ip address get [/ip address find dynamic=yes interface=ADSL2] network]

/ip route set [/ip route find comment=3] gateway=$new-gateway

/ip route enable [/ip route find comment=3]

/ip route disabled [/ip route find comment=1]

/ip route disabled [/ip route find comment=2]

/ip firewall nat enable [/ip firewall nat find comment=3]

/ip firewall nat disabled [/ip firewall nat find comment=1]

/ip firewall nat disabled [/ip firewall nat find comment=2]

5.添加ADSL2当线脚本A2Down，自动停用NTH负载均衡所需的参数，并将标记3的网关设为ADSL1的网关，位置winbox-system-script 点“+ ”号，改name为A2Down，然后复制下面的脚本到source里

:local new-gateway

:set new-gateway [/ ip address get [/ip address find dynamic=yes interface=ADSL1] network]

/ip route set [/ip route find comment=3] gateway=$new-gateway

/ip route enable [/ip route find comment=3]

/ip route disabled [/ip route find comment=1]

/ip route disabled [/ip route find comment=2]

/ip firewall nat enable [/ip firewall nat find comment=3]

/ip firewall nat disabled [/ip firewall nat find comment=1]

/ip firewall nat disabled[/ip firewall nat find comment=2]

编辑推荐

负载均衡技术基础专题

当前，无论在企业网、园区网还是在广域网上，即使按照当时最优配置建设的网络，业务量的发展都超出了过去..

本文介绍了双ADSL下的NTH的负载均衡设置问题。包括普通脚本，nat，还有IP等相关内容。那么，具体的代码，请从下文中参考。

6.添加ADSL掉线判断NETWATCH

/ tool netwatch

add host=A1网关 timeout=1s interval=1m up-script="" down-script="A1Down" comment="1"

add host=A2网关 timeout=1s interval=1m up-script="" down-script="A2Down" comment="2"

7.添加双线判断正常脚本allup。即两条线路UP的时候开启NTH负载均衡。位置winbox-system-script 点“+ ”号，改name为allup，然后复制下面的脚本到source里

:global a

:global b

:set a [/tool netwatch get [/tool netwatch find comment=1] status]

:set b [/tool netwatch get [/tool netwatch find comment=2] status]

:if (($a="up") && ($b="up")) do={

/ip route disabled [/ip route find comment=3]

/ip route enable [/ip route find comment=1]

/ip route enable [/ip route find comment=2]

/ip firewall nat disabled [/ip firewall nat find comment=3]

/ip firewall nat enable [/ip firewall nat find comment=1]

/ip firewall nat enable [/ip firewall nat find comment=2]}

8.添加脚本计划任务

/ system scheduler

add name="tasksync" on-event=sync start-date=jan/01/1970 start-time=00:00:00 interval=10s comment=""

add name="taskup" on-event=allup start-date=jan/01/1970 start-time=00:00:00 interval=10s comment=""

佟媛微

编辑推荐

负载均衡技术基础专题

当前，无论在企业网、园区网还是在广域网上，即使按照当时最优配置建设的网络，业务量的发展都超出了过去..