使用Eth-Trunk实现负载分担和备份链路.docx

使用Eth-Trunk实现负载分担和备份链路配置实例文章出处：整理 路由器可以对多个以太网接口捆绑形成一个Eth-Trunk逻辑接口，Eth-Trunk接口的主要目的是增大带宽和提高设备之间链路的可靠性。Eth-Trunk可以把成员接口配置成手动负载分担的模式，也可以配置成静态LACP模式，让两设备间的链路具有冗余备份链路，当活动链路出现故障链路时，备份链路替代故障链路，保持数据传输的可靠性。以下为大家介绍在华为路由器上的具体配置方法。一、配置手工负载分担模式1、组网拓扑和需求 如下图所示，RouterA和RouterB为两台路由器设备，要求RouterA和RouterB之间的链路有较高的可靠性，并在RouterA和RouterB之间实现数据流量的负载分担。2、配置思路采用如下的思路配置负载分担链路聚合：1）创建Eth-Trunk。2）加入Eth-Trunk的成员接口。3）检查配置结果。 创建Eth-Trunk后，缺省的工作模式为手工负载分担模式，所以，缺省情况下，不需要配置其模式为手工负载分担模式。如果当前模式已经配置为其它模式，可以使用mode命令更改。3、配置步骤1）创建Eth-Trunk# 配置RouterA。RouterA interface eth-trunk 1RouterA-Eth-Trunk1 quit# 配置RouterB。RouterB interface eth-trunk 1RouterB-Eth-Trunk1 quit2）加入Eth-Trunk的成员接口# 配置RouterA。RouterA interface gigabitethernet 1/0/1RouterA-Gigabitethernet1/0/1 undo shutdownRouterA-Gigabitethernet1/0/1 eth-trunk 1RouterA-Gigabitethernet1/0/1 quitRouterA interface gigabitethernet 1/0/2RouterA-Gigabitethernet1/0/2 undo shutdownRouterA-Gigabitethernet1/0/2 eth-trunk 1RouterA-Gigabitethernet1/0/2 quitRouterA interface gigabitethernet 1/0/3RouterA-Gigabitethernet1/0/3 undo shutdownRouterA-Gigabitethernet1/0/3 eth-trunk 1RouterA-Gigabitethernet1/0/3 quit# 配置RouterB。RouterB interface gigabitethernet 1/0/1RouterB-Gigabitethernet1/0/1 undo shutdownRouterB-Gigabitethernet1/0/1 eth-trunk 1RouterB-Gigabitethernet1/0/1 quitRouterB interface gigabitethernet 1/0/2RouterB-Gigabitethernet1/0/2 undo shutdownRouterB-Gigabitethernet1/0/2 eth-trunk 1RouterB-Gigabitethernet1/0/2 quitRouterB interface gigabitethernet 1/0/3RouterB-Gigabitethernet1/0/3 undo shutdownRouterB-Gigabitethernet1/0/3 eth-trunk 1RouterB-Gigabitethernet1/0/3 quit4、验证配置结果 在任意视图下执行display trunkmembership命令，检查Eth-Trunk 1是否创建成功，及成员接口是否正确加入，以RouterA为例。RouterA display trunkmembership eth-trunk 1Trunk ID: 1used status: VALIDTYPE: ethernetWorking Mode : NormalWorking State: NormalNumber Of Ports in Trunk = 3Number Of UP Ports in Trunk = 3operate status: upInterface GigabitEthernet1/0/1, valid, selected, operate up, weight=1,standby interface NULLInterface GigabitEthernet1/0/2, valid, selected, operate up, weight=1,standby interface NULLInterface GigabitEthernet1/0/3, valid, selected, operate up, weight=1,standby interface NULL5、配置文件1）RouterA的配置文件#sysname RouterA#interface Eth-Trunk1#interface GigabitEthernet1/0/1undo shutdowneth-trunk 1#interface GigabitEthernet1/0/2undo shutdowneth-trunk 1#interface GigabitEthernet1/0/3undo shutdowneth-trunk 1#return2）RouterB的配置文件#sysname RouterB#interface Eth-Trunk1#interface GigabitEthernet1/0/1undo shutdowneth-trunk 1#interface GigabitEthernet1/0/2undo shutdowneth-trunk 1#interface GigabitEthernet1/0/3undo shutdowneth-trunk 1#return二、配置静态LACP模式1、组网结构及需求 如下图所示，RouterA和RouterB为两台路由器设备，在两台路由器上配置静态LACP模式Eth-Trunk，提高两设备之间的带宽与可靠性，具体要求如下：1）前2条活动链路具有负载分担的能力。2）第3条链路为冗余备份链路，当活动链路出现故障链路时，备份链路替代故障链路，保持数据传输的可靠性。2、配置思路采用如下的思路配置静态LACP模式Eth-Trunk：1）在路由器上创建Eth-Trunk，配置Eth-Trunk为静态LACP模式。2）将成员接口加入Eth-Trunk。3）配置系统优先级确定主动端。4）配置活动接口上限阈值。5）配置接口优先级确定活动链路。6）配置LACP抢占和抢占等待时间。7）验证配置结果。3、配置步骤1）创建编号为1的Eth-Trunk，配置它的工作模式为静态LACP模式# 配置RouterA。RouterA-Eth-Trunk1 mode lacp-staticRouterA-Eth-Trunk1 quit# 配置RouterB。RouterB-Eth-Trunk1 mode lacp-staticRouterB-Eth-Trunk1 quit2）将成员接口加入Eth-Trunk# 配置RouterA。RouterA interface gigabitethernet 1/0/1RouterA-Gigabitethernet1/0/1 undo shutdownRouterA-Gigabitethernet1/0/1 eth-trunk 1RouterA-Gigabitethernet1/0/1 quitRouterA interface gigabitethernet 1/0/2RouterA-Gigabitethernet1/0/2 undo shutdownRouterA-Gigabitethernet1/0/2 eth-trunk 1RouterA-Gigabitethernet1/0/2 quitRouterA interface gigabitethernet 1/0/3RouterA-Gigabitethernet1/0/3 undo shutdownRouterA-Gigabitethernet1/0/3 eth-trunk 1RouterA-Gigabitethernet1/0/3 quit# 配置RouterB。RouterB interface gigabitethernet 1/0/1RouterB-Gigabitethernet1/0/1 undo shutdownRouterB-Gigabitethernet1/0/1 eth-trunk 1RouterB-Gigabitethernet1/0/1 quitRouterB interface gigabitethernet 1/0/2RouterB-Gigabitethernet1/0/2 undo shutdownRouterB-Gigabitethernet1/0/2 eth-trunk 1RouterB-Gigabitethernet1/0/2 quitRouterB interface gigabitethernet 1/0/3RouterB-Gigabitethernet1/0/3 undo shutdownRouterB-Gigabitethernet1/0/3 eth-trunk 1RouterB-Gigabitethernet1/0/3 quit3）在RouterA上配置系统优先级为100，使其成为LACP主动端RouterA lacp priority 1004）在RouterA上配置活动接口上限阈值M为2RouterA interface eth-trunk 1RouterA-Eth-Trunk1 max active-linknumber 2由于RouterA为主动端，所以RouterB可以不需要配置活动接口上限阈值。5）配置接口优先级确定活动链路# 配置RouterA。RouterA interface gigabitethernet 1/0/1RouterA-Gigabitethernet1/0/1 lacp priority 110RouterA-Gigabitethernet1/0/1 quitRouterA interface gigabitethernet 1/0/2RouterA-Gigabitethernet1/0/2 lacp priority 110RouterA-Gigabitethernet1/0/2 quitRouterA interface gigabitethernet 1/0/3RouterA-Gigabitethernet1/0/3 lacp priority 120RouterA-Gigabitethernet1/0/3 quit# 配置RouterB。RouterB interface gigabitethernet 1/0/1RouterB-Gigabitethernet1/0/1 lacp priority 110RouterB-Gigabitethernet1/0/1 quitRouterB interface gigabitethernet 1/0/2RouterB-Gigabitethernet1/0/2 lacp priority 110RouterB-Gigabitethernet1/0/2 quitRouterB interface gigabitethernet 1/0/3RouterB-Gigabitethernet1/0/3 lacp priority 120RouterB-Gigabitethernet1/0/3 quit6）配置LACP抢占和抢占等待时间# 配置RouterA。RouterA interface eth-trunk 1RouterA-Eth-Trunk1 lacp preempt enableRouterA-Eth-Trunk1 lacp preempt delay 10# 配置RouterB。RouterB interface eth-trunk 1RouterB-Eth-Trunk1 lacp preempt enableRouterB-Eth-Trunk1 lacp preempt delay 104、验证配置结果# 查看各路由器的Eth-Trunk信息，查看链路是否协商成功。RouterA display eth-trunk 1Eth-Trunk1s state information is:Local:LAG ID: 1 WorkingMode: STATICPreempt Delay: 10 Hash arithmetic: According to MACSystem Priority: 110 System ID: 0011-fca8-0422Least Active-linknumber: 1 Max active-linknumber: 2Operate status: up Number Of Up Port In Trunk: 2-ActorPortName Status PortType PortPri PortNo PortKey PortState WeightGigabitEthernet1/0/1 Selected 1GE 100 6145 2865 11111100 1GigabitEthernet1/0/2 Selected 1GE 100 6146 2865 11111100 1GigabitEthernet1/0/3 Unselect 1GE 150 6147 2865 11100000 1Partner:-PartnerPortName SysPri SystemID PortPri PortNo PortKey PortStateGigabitEthernet1/0/1 32768 11e0-fca6-1185 32768 6145 2609 11111100GigabitEthernet1/0/2 32768 11e0-fca6-1185 32768 6146 2609 11111100GigabitEthernet1/0/3 32768 11e0-fca6-1185 32768 6147 2609 11110000 display eth-trunk 1Eth-Trunk1s state information is:Local:LAG ID: 1 WorkingMode: STATICPreempt Delay: 10 Hash arithmetic: According to MACSystem Priority: 32768 System ID: 11e0-fca6-1185Least Active-linknumber: 1 Max active-linknumber: 16Operate status: up Number Of Up Port In Trunk: 2-ActorPortName Status PortType PortPri PortNo PortKey PortState WeightGigabitEthernet1/0/1 Selected 1GE 32768 6145 2609 11111100 1GigabitEthernet1/0/2 Selected 1GE 32768 6146 2609 11111100 1GigabitEthernet1/0/3 Unselect 1GE 32768 6147 2609 11100000 1Partner:-PartnerPortName SysPri SystemID PortPri PortNo PortKey PortStateGigabitEthernet1/0/1 32768 0011-fca8-0422 100 6145 2865 11111100GigabitEthernet1/0/2 32768 0011-fca8-0422 100 6146 2865 11111100GigabitEthernet1/0/3 32768 0011-fca8-0422 150 6147 2865 11110000通过以上显示信息可以看到，RouterA的系统优先级为110，高于RouterB的系统优先级。Eth-Trunk的成员接口中Gigabitethernet 1/0/1、Gigabitethernet 1/0/2成为活动接口，处