MPLS LDP 实验拓扑图
MPLS LDP实验拓扑图
[Huawei]sys S1
[S1]interface Vlanif 1
[S1-Vlanif1]IP AD
[S1-Vlanif1]IP address 10.0.1.2 24
[Huawei]sysname R1
[R1]interface GigabitEthernet 0/0/1
[R1-GigabitEthernet0/0/1]IP address 10.0.1.1 24
[R1-GigabitEthernet0/0/1]Q
[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]IP address 10.0.12.1 24
[R1-GigabitEthernet0/0/0]Q
[R1]interface LoopBack 0
[R1-LoopBack0]IP address 2.2.2.2 24
sys
[Huawei]sys R2
[R2]interface GigabitEthernet 0/0/0
[R2-GigabitEthernet0/0/0]IP address 10.0.12.2 24
[R2-GigabitEthernet0/0/0]Q
[R2]interface GigabitEthernet 0/0/2
[R2-GigabitEthernet0/0/2]IP address 10.0.23.2 24
[R2-GigabitEthernet0/0/2]Q
[R2]interface LoopBack 0
[R2-LoopBack0]IP address 3.3.3.3 24
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SYS
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[Huawei]SYS R3
[R3]interface GigabitEthernet 0/0/2
[R3-GigabitEthernet0/0/2]IP address 10.0.23.3 24
[R3-GigabitEthernet0/0/2]Q
[R3]interface GigabitEthernet 0/0/1
[R3-GigabitEthernet0/0/1]IP address 10.0.2.1 24
[R3-GigabitEthernet0/0/1]q
[R3]interface LoopBack 0
[R3-LoopBack0]ip address 4.4.4.4 24
[R3-LoopBack0]
sys
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[Huawei]sysname S2
[S2]interface Vlanif 1
[S2-Vlanif1]IP address 10.0.2.2 24
步骤二、配置单区域ospf
S1]ospf 1 router-id 1.1.1.1
[S1-ospf-1]area 0
[S1-ospf-1-area-0.0.0.0]network 10.0.1.0 0.0.0.255
R1>sys
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[R1]ospf 1 router-id 2.2.2.2
[R1-ospf-1]area 0
[R1-ospf-1-area-0.0.0.0]net
[R1-ospf-1-area-0.0.0.0]network 10.0.1.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]network 10.0.12.0 0.0.0.255
[R1-ospf-1-area-0.0.0.0]network 2.2.2.0 0.0.0.255
sys
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[R2]ospf 1 router-id 3.3.3.3
[R2-ospf-1]area 0
[R2-ospf-1-area-0.0.0.0]network 10.0.12.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]network 10.0.23.0 0.0.0.255
[R2-ospf-1-area-0.0.0.0]network 3.3.3.0 0.0.0.255
sys
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[R3]ospf 1 router-id 4.4.4.4
[R3-ospf-1]area 0
[R3-ospf-1-area-0.0.0.0]network 10.0.23.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 10.0.2.0 0.0.0.255
[R3-ospf-1-area-0.0.0.0]network 4.4.4.0 0.0.0.255
sys
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[S2]ospf
[S2]ospf 1 router-id 5.5.5.5
[S2-ospf-1]area 0
S2-ospf-1-area-0.0.0.0]network 10.0.2.0 0.0.0.255
配置完成后，查看设备的路由表，并测试全网的连通性。
使用display ip routing-table 命令查看各路由OSPF 路由表
步骤三、MPLS LDP 配置
在各mpls路由器上配置全局MPLS 和LDP
sys
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[R1]
[R1]mpls lsr-id
[R1]mpls lsr-id 2.2.2.2
[R1]mpls
Info: Mpls starting, please wait… OK!
[R1-mpls]mpls ldp
[R1-mpls-ldp]
sys
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[R2]mpls lsr-id 3.3.3.3
[R2]mpls
Info: Mpls starting, please wait… OK!
[R2-mpls]mpls ldp
[R2-mpls-ldp]
sys
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[R3]mpls lsr-id 4.4.4.4
[R3]mpls
Info: Mpls starting, please wait… OK!
[R3-mpls]mpl
[R3-mpls]mpls ldp
[R3-mpls-ldp]
在各MPLS路由器接口上配置MPLS和LDP
[R1]interface GigabitEthernet 0/0/0
[R1-GigabitEthernet0/0/0]mpls
[R1-GigabitEthernet0/0/0]mpls ldp
[R1-GigabitEthernet0/0/0]
[R2]interface g0/0/0
[R2-GigabitEthernet0/0/0]mpls
[R2-GigabitEthernet0/0/0]MPLS LDP
[R2-GigabitEthernet0/0/0]Q
[R2]interface G 0/0/2
[R2-GigabitEthernet0/0/2]mpls
[R2-GigabitEthernet0/0/2]mpls ldp
[R2-GigabitEthernet0/0/2]
[R3]interface G0/0/2
[R3-GigabitEthernet0/0/2]mpls
[R3-GigabitEthernet0/0/2]mpls ldp
[R3-GigabitEthernet0/0/2]
配置完成后，在节点上执行display mpls ldp session命令，可以看到R1和R2和R3之间的本地LDP会话状态为“Operational”
[R1]display mpls ldp session
步骤四、LDP建立LSP
在配置完成后，各MPLS路由器已根据默认的LDP触发策略建立LSP,即所有主机路由触发建立LDP LSP
在各MPLS路由器上执行display mpls ldp lsp 命令，可以看到所有主机路由都触发建立了LDP LSP
[R1]DIS mpls ldp lsp
[R2]DIS mpls ldp lsp
[R3]DIS mpls ldp lsp
通常情况下，使用缺省的触发策略，即由“host”方式触发建立LDP LSP
在各MPLS路由上将LDP LSP 的触发策略修改为all ,是路由表中的所有静态路由和IGP表项都可以触发建立LDP LSP 。
sy
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[R1]mpls
[R1-mpls]lsp-trigger aLL
R2]MPLS
[R2-mpls]lsp-trigger all
[R3]MPLS
[R3-mpls]lsp-trigger all
配置完成后，在各节点上执行 display mpls ldp lsp 命令，可以看到ldp lsp 的建立情况。
步骤五、LDP Inbound策略配置