ros多线路叠加策略pcc超详细教程图文

PCC的负载均衡<互联网共享人人为我我为人人>这是ros最根本最重要的应用，网络上很多教程都比拟笼统,新手根本看不懂!

此教程,详细图文+脚本,新手老手都可以借鉴.

通分组源地址和源端口实现负载平衡，这里我们建立2个WAN出口分别是wan1和wan2，网接口是lan1网络环境如下：ISP1地址10.200.15.99/24，网关：10.200.15.1；ISP2地址10.200.100.99/24，网关：10.200.100.2；网IP地址192.168.100.1/24；启用DNS缓存功能，用192.168.100.1作网DNS解析；根本配置首先进入ipaddress配置IP地址：Mangle标记配置接下来我们进入ipfirewallmangle标记连接和路由，我们使用per-connection-classifier双向地址进展分类做连接分类标记。首先我们需要将进入路由的的进展标记如下列图，我们进入一条mangle规则，中的advanced标签容可以看到per-connection-classifier分类器，选择both-addresses的分类：然后选择dst-address-type=!local，即除了目标地址是本地以前的地址：注：2条线的分类代码定义是第一条线为2/0，第二条为2/1同样选择一下地址类型：下面命令是提取走第一条线路的连接标记取名位1st_conn，并从连接里提取路由标记名位1st_route，设置：per-connection-classifier=both-addresses:2/0,设置in-interface=lan/ipfirewallmangle

addaction=mark-connectionchain=preroutingment=""disabled=no\

in-interface=lannew-connection-mark=1st_connpassthrough=yes\

per-connection-classifier=both-addresses:2/0

addaction=mark-routingchain=preroutingment=""connection-mark=1st_conn\

disabled=noin-interface=lannew-routing-mark=1st_routepassthrough=yes提取走第二条线路的连接标记取名位2nd_conn，并从连接里提取路由标记名位2nd_route，设置：per-connection-classifier=both-addresses:2/1，设置in-interface=lan:/ipfirewallmangle

addaction=mark-connectionchain=preroutingment=""disabled=no\

in-interface=lannew-connection-mark=2nd_connpassthrough=yes\

per-connection-classifier=both-addresses:2/1

addaction=mark-routingchain=preroutingment=""connection-mark=2nd_conn\

disabled=noin-interface=lannew-routing-mark=2nd_routepassthrough=yes在winbo*在mangle中设置完成后如下：回程路由设置我们需要将从那个口进入就从相应的口回去，即保证每个外网口的数据能得到正确的路由/ipfirewallmangle

addchain=inputin-interface=wan1action=mark-connectionnew-connection-mark=1st_conn

addchain=inputin-interface=wan2action=mark-connectionnew-connection-mark=2nd_connwinbo*设置标记完进入接口的后，将这些指定到相应的路由标记上：addchain=outputconnection-mark=1st_connaction=mark-routingnew-routing-mark=1st_route

addchain=outputconnection-mark=2nd_connaction=mark-routingnew-routing-mark=2nd_routewinbo*设置路由配置配置完标记后路由后，我们进入iproute配置路由，首先设置负载均衡的标记路由，首先设置第一条线路的路由标记，设置routing-mark=1st_route：设置第二条线路的路由标记，设置routing-mark=2nd_route：配置默认网关和备份网关，默认网关的distance设置为1，并设置check-gateway=ping，通过ping监测网关状态:备份网关的distance设置为2，并设置check-gateway=ping，通过ping监测网关状态:配置完成后的路由标如下列图：配置nat最后配置nat转换规则，进入ipfirewallnat中配置action=masquerade，分别对2条线路做伪装：/ipfirewallnat

addaction=masqueradechain=sratout-interface=wan1

addaction=masqueradechain=sratout-interface=wan2命令代码如下：*添加ADSL1的pppoe-out密码并取取消自动添加网关及DNS

/interfacepppoe-clientaddname="pppoe-out1"interface="wan1"user="adsl1name"password="adsl1pass"add-default-route=nodisabled=no

/interfacepppoe-clientaddname="pppoe-out2"interface="wan2"user="adsl2name"password="adsl2pass"add-default-route=nodisabled=no*激活pppoe-out拨号

/interfacepppoe-clientenablepppoe-out1

/interfacepppoe-clientenablepppoe-out2*添加本地连接配置

/ipaddressaddaddress=192.168.1.254/255.255.255.0interface=lan1ment="LAN1"*设置DNS缓存

/ipdnssetprimary-dns="202.103.224.68"secondary-dns="202.103.225.68"allow-remote-requests=yes*设置MSS值为1440

/ipfirewallmangleaddaction="change-mss"chain="forward"ment="change-mss"disabled=nonew-mss="1440"protocol="tcp"tcp-flags="syn"*设置input

/ipfirewallmangleaddaction="mark-connection"chain="input"ment=""disabled=noin-interface="pppoe-out1"new-connection-mark="pppoe-out1_conn"passthrough=yes

/ipfirewallmangleaddaction="mark-connection"chain="input"ment=""disabled=noin-interface="pppoe-out2"new-connection-mark="pppoe-out2_conn"passthrough=yes*设置output

/ipfirewallmangleaddaction="mark-routing"chain="output"ment=""connection-mark="pppoe-out1_conn"disabled=nonew-routing-mark="to_pppoe-out1"passthrough=yes

/ipfirewallmangleaddaction="mark-routing"chain="output"ment=""connection-mark="pppoe-out2_conn"disabled=nonew-routing-mark="to_pppoe-out2"passthrough=yes*PCC设置

/ipfirewallmangleaddaction="mark-connection"chain="prerouting"ment=""disabled=nodst-address-type="!local"in-interface="lan1"new-connection-mark="pppoe-out1_conn"passthrough=yesper-connection-classifier="both-addresses:2/0"src-address="192.168.1.0/24"

/ipfirewallmangleaddaction="mark-connection"chain="prerouting"ment=""disabled=nodst-address-type="!local"in-interface="lan1"new-connection-mark="pppoe-out2_conn"passthrough=yesper-connection-classifier="both-addresses:2/1"src-address="192.168.1.0/24"/ipfirewallmangleaddaction="mark-routing"chain=preroutingment=""connection-mark="pppoe-out1_conn"disabled=noin-interface="lan1"new-routing-mark="to_pppoe-out1"passthrough=yessrc-address="192.168.1.0/24"

/ipfirewallmangleaddaction="mark-routing"chain=preroutingment=""connection-mark="pppoe-out2_conn"disabled=noin-interface="lan1"new-routing-mark="to_pppoe-out2"passthrough=yessrc-address="192.168.1.0/24"/iprouteaddment=1disabled=nodistance=1dst-address="0.0.0.0/0"gateway="pppoe-out1"routing-mark="to_pppoe-out1"check-gateway="ping"

/iprouteaddment=2disabled=nodistance=1dst-address="0.0.0.0/0"gateway="pppoe-out2"routing-mark="to_pppoe-out2"check-gateway="ping"/iprouteaddcheck-gateway="ping"ment="pppoe-out1"disabled=nodistance="10"dst-address="0.0.0.0/0"gateway="pppoe-out1"

/iprouteaddcheck-gateway="ping"ment="pppoe-out2"disabled=nodistan