2.9.X 电信+网通1条ADSL自动策略路由切换+备份

xsjfj

2.9.X 电信+网通1条ADSL自动策略路由切换+备份

第一 ip设好

/ ip address
add address=192.168.1.1/24 network=192.168.1.0 broadcast=192.168.1.255 \
interface=LAN comment="" disabled=no
add address=电信地址/掩码 network=自动设置 broadcast=自动设置
interface=TEL comment="" disabled=no

内网=192.168.1.1/24 网卡设置为LAN

假设的IP
电信=218.63.213.6/32 网卡设置为TEL
网关=218.63.213.1

网通=ADSL            网卡设置为CNC
网通IP=172.16.20.253/32
网关=172.16.20.1

记住要改MSS

/ ip firewall mangle
add chain=forward protocol=tcp tcp-flags=syn \
action=change-mss new-mss=1400 comment="" disabled=no

/ ip firewall nat
add chain=srcnat src-address=192.168.1.0/24 action=masquerade comment="" \
disabled=no

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第2步 添加 网通的路由网关

电信的服务器在网络中占了绝大多数

所以不需要考虑电信的服务器,把电信网关和网通网关修改为你自己的获取的网关就可以了.

/ ip route
add dst-address=59.80.0.0/14 gateway=网通网关 check-gateway=ping \
distance=0 scope=255 target-scope=10 comment="CNC" disabled=no
....................
add dst-address=0.0.0.0/0 gateway=电信网关 check-gateway=ping \
distance=0 scope=255 target-scope=10 comment="TEL" disabled=no
add dst-address=0.0.0.0/0 gateway=网通网关 check-gateway=ping \
distance=0 scope=255 target-scope=10 comment="CNC" disabled=no

注意comment=TEL和CNC的注译.

电信网通的路由表生成器在软路由论坛去下载,我发布的不是最新的,但是可以用.

下载地址 http://bbs.routerclub.com/thread-30982-1-1.html
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第3步 设置好监控的开关

/ tool netwatch
add host=电信网关 timeout=1s interval=1m up-script=dxup \
down-script=dxdown comment="TEL" disabled=no
add host=网通网关 timeout=1s interval=1m up-script=CNCup \
down-script=CNCdown comment="CNC" disabled=no

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第四写好脚本自动切换 第一种方法ros的脚本加在script里面的

dxup
/ip route set [/ip route find comment=TEL] gateway 电信网关

cncup
/ip route set [/ip route find comment=CNC] gateway [/ip address get [/ip address find interface=pppoe-out1] network]

dxdown
/ip route set [/ip route find comment=CNC] gateway [/ip address get [/ip address find interface=pppoe-out1] network]

cncdown
/ip route set [/ip route find comment=TEL] gateway 电信网关

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思路:
对于双adsl接入且一个是网通一个是电信的情况下.先把路由的网关乱设好一个,然后用这个脚本来把网关改为拨号后自动获取的网关,加在Scheduler里,Name=CNCget Interval=00:00:10



:local assign-address
:local new-address

:set assign-address [/ip route get[/ip route find comment=CNC] gateway]
:set new-address [/ip address get[/ip address find interface=pppoe-out1] network]

:if ($assign-address != $new-address) do={/ip route set[/ip route find comment=CNC] gateway=$new-address}


有不对的地方请指教,我是新学.

[ 本帖最后由 xsjfj 于 2008-4-15 08:38 编辑 ]