MikroTik做单线多拨负载均衡

作者 : 七界传说发布时间： 2023-05-7 文章热度：3.23K 共3848个字，阅读需10分钟。

漏油器版本：x86_64_7.9

创建pppoe

/interface pppoe-client add interface=wan user=* password=* add-default-route=no name=pppoe-out1 disabled=no
/interface pppoe-client add interface=wan user=* password=* add-default-route=no name=pppoe-out2 disabled=no
/interface pppoe-client add interface=wan user=* password=* add-default-route=no name=pppoe-out3 disabled=no

注:user宽带帐号 password宽带密码

创建路由标记tables

/routing table 
add name=PPPoE_Rout_1 fib
add name=PPPoE_Rout_2 fib
add name=PPPoE_Rout_3 fib

创建mangle

劫持TCP Mss

/ip firewall mangle add action=change-mss chain=forward comment="chang mss" new-mss=clamp-to-pmtu passthrough=yes protocol=tcp tcp-flags=syn out-interface=pppoe-out1 place-before=0
/ip firewall mangle add action=change-mss chain=output new-mss=clamp-to-pmtu passthrough=yes protocol=tcp tcp-flags=syn place-before=1

注:out-interface=pppoe-out1 可以不选择这条7.0版本无用
源进

/ip firewall mangle 
add action=mark-connection chain=prerouting comment="In_source" connection-mark=no-mark connection-state=new in-interface=pppoe-out1 new-connection-mark=In_Conn_1 passthrough=yes
add action=mark-connection chain=prerouting  connection-mark=no-mark connection-state=new in-interface=pppoe-out2 new-connection-mark=In_Conn_2 passthrough=yes
add action=mark-connection chain=prerouting  connection-mark=no-mark connection-state=new in-interface=pppoe-out3 new-connection-mark=In_Conn_3 passthrough=yes

源出

/ip firewall mangle 
add action=mark-routing chain=output comment="Out_source" connection-mark=In_Conn_1 new-routing-mark=PPPoE_Rout_1 passthrough=yes
add action=mark-routing chain=output  connection-mark=In_Conn_2 new-routing-mark=PPPoE_Rout_2 passthrough=yes
add action=mark-routing chain=output  connection-mark=In_Conn_3 new-routing-mark=PPPoE_Rout_3 passthrough=yes

负载均衡

/ip firewall mangle 
add action=mark-connection chain=prerouting comment="Pcc_1" dst-address-type=!local in-interface=Bridge connection-mark=no-mark connection-state=new new-connection-mark=In_Conn_1 passthrough=yes per-connection-classifier=src-address-and-port:3/0
add action=mark-routing chain=prerouting connection-mark=In_Conn_1 in-interface=Bridge new-routing-mark=PPPoE_Rout_1 passthrough=yes
add action=mark-connection chain=prerouting comment="Pcc_2" dst-address-type=!local in-interface=Bridge connection-mark=no-mark connection-state=new new-connection-mark=In_Conn_2 passthrough=yes per-connection-classifier=src-address-and-port:3/1
add action=mark-routing chain=prerouting connection-mark=In_Conn_2 in-interface=Bridge new-routing-mark=PPPoE_Rout_2 passthrough=yes
add action=mark-connection chain=prerouting comment="Pcc_3" dst-address-type=!local in-interface=Bridge connection-mark=no-mark connection-state=new new-connection-mark=In_Conn_3 passthrough=yes per-connection-classifier=src-address-and-port:3/2
add action=mark-routing chain=prerouting connection-mark=In_Conn_3 in-interface=Bridge new-routing-mark=PPPoE_Rout_3 passthrough=yes

创建伪装nat

/ip firewall nat 
add chain=srcnat out-interface=pppoe-out1 action=masquerade comment="Src_A" place-before=0
add chain=srcnat out-interface=pppoe-out2 action=masquerade comment="Src_B" place-before=1
add chain=srcnat out-interface=pppoe-out3 action=masquerade comment="Src_C" place-before=2

注:V7版本只创一条NAT可以不选择out-interface=pppoe-out1

创建路由Route

/ip route 
add dst-address=0.0.0.0/0 gateway=pppoe-out1 distance=1 routing-table=main conmment=ISP1 Default Route
add dst-address=0.0.0.0/0 gateway=pppoe-out1 distance=1 routing-table=PPPoE_Rout_1 conmment=ISP1 Load Balanced Route
add dst-address=0.0.0.0/0 gateway=pppoe-out2 distance=2 routing-table=main conmment=ISP2 Default Route
add dst-address=0.0.0.0/0 gateway=pppoe-out2 distance=2 routing-table=PPPoE_Rout_2 conmment=ISP2 Load Balanced Route
add dst-address=0.0.0.0/0 gateway=pppoe-out3 distance=3 routing-table=main conmment=ISP3 Default Route
add dst-address=0.0.0.0/0 gateway=pppoe-out3 distance=3 routing-table=PPPoE_Rout_3 conmment=ISP3 Load Balanced Route

宽带是300兆测试下叠加效果：

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