MPLS的基础配置-海口c网

MPLS的基础配置

article/2025/7/16 11:12:47

MPLS概念（AI）

‌MPLS（多协议标签交换）的工作原理是通过标签（Label）引导数据转发，将固定长度的短标签与数据分组封装，交换节点仅根据标签进行快速转发，从而提升网络传输效率和灵活性。

MPLS的静态lsp（人机）

拓扑

实验目的：
1. 掌握mpls 静态lsp的配置
2. 掌握mpls网络中数据通信过程
实验步骤：
1. 设备重命名以及IP地址的配置
2. 配置OSPF
3. 配置静态LSP，在AR1测试，并且在G0/0/0口抓包查看数据特征
4. 配置FEC为1.1.1.1的静态lsp，再次在AR1上ping测试3.3.3.3，查看抓包结果

命令

配置
r1
[Huawei]un in en
Info: Information center is disabled.
[Huawei]sysname r1
[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip add 12.1.1.1 24
[r1]int lo 0
[r1-LoopBack0]ip add 1.1.1.1 32
[r1-LoopBack0]q
[r1-GigabitEthernet0/0/0]ospf 
[r1-ospf-1]area 0
[r1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0
[r1-ospf-1-area-0.0.0.0]network 12.1.1.0 0.0.0.255
[r1-ospf-1-area-0.0.0.0]mpls lsr-id 1.1.1.1
[r1]mpls
Info: Mpls starting, please wait... OK!
[r1-mpls]int g0/0/0
[r1-GigabitEthernet0/0/0]mpls
[r1-GigabitEthernet0/0/0]q
[r1]static-lsp ingress 1-3 destination 3.3.3.3 32 nexthop 12.1.1.2 outgoing-int 
g0/0/0 out-label 200测试
[r1]static-lsp egress 3-1 incoming-int g0/0/0 in-label 300{r1}dis mpls lsp
注：出现并联通3.3.3.3即可

配置
r2
<Huawei>sys
Enter system view, return user view with Ctrl+Z.
[Huawei]un in en
Info: Information center is disabled.
[Huawei]sysname r2
[r2]int g0/0/1
[r2-GigabitEthernet0/0/1]ip add 12.1.1.2 24
[r2-GigabitEthernet0/0/1]int g0/0/0 
[r2-GigabitEthernet0/0/0]ip add 23.1.1.2 24
[r2-GigabitEthernet0/0/0]q
[r2]ospf
[r2-ospf-1]area 0
[r2-ospf-1-area-0.0.0.0]network 12.1.1.0 0.0.0.255
[r2-ospf-1-area-0.0.0.0]network 2.2.2.2 0.0.0.0
[r2-ospf-1-area-0.0.0.0]network 23.1.1.0 0.0.0.255
[r2-ospf-1-area-0.0.0.0]q
[r2-ospf-1]q
[r2]int lo 0
[r2-LoopBack0]ip add 2.2.2.2 32
[r2-LoopBack0]q
[r2]mpls lsr-id 2.2.2.2 
[r2]mpls
Info: Mpls starting, please wait... OK!
[r2-mpls]int g0/0/0
[r2-GigabitEthernet0/0/0]mpls
[r2-GigabitEthernet0/0/0]int g0/0/1
[r2-GigabitEthernet0/0/1]mpls
[r2-GigabitEthernet0/0/1]q
[r2]static-lsp transit 1-3 incoming-int g0/0/0 in-label 200 nexthop 23.1.1.2 out
-label 100
如果配置有误，可以把接口改成/1，建议看准接口在配置，此为12-23ip的下一跳，应为/1r2/r3测试
[r2]dis mpls lsp
-------------------------------------------------------------------------------LSP Information: STATIC LSP
-------------------------------------------------------------------------------
FEC                In/Out Label  In/Out IF                      Vrf Name       
-/-                200/100       GE0/0/0/GE0/0/0    
[r2]static-lsp transit 3-1 incoming-int g0/0/1 in-label 100 nexthop 12.1.1.1 out
-label 100

配置
r3
[r3]int g0/0/1
[r3-GigabitEthernet0/0/1]ip add 23.1.1.3 24
[r3-GigabitEthernet0/0/1]int lo 0
[r3-LoopBack0]ip add 3.3.3.3 32
[r3-LoopBack0]q
[r3]ospf
[r3-ospf-1]area 0
[r3-ospf-1-area-0.0.0.0]network 23.1.1.0 0.0.0.255
[r3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0
[r3-ospf-1-area-0.0.0.0]q
[r3-ospf-1]q
[r3]mpls lsr-id 3.3.3.3
[r3]mpls
Info: Mpls starting, please wait... OK!
[r3-mpls]int g0/0/1
[r3-GigabitEthernet0/0/1]mpls
[r3-GigabitEthernet0/0/1]q
[r3]q
[r3]static-lsp egress 1-3 incoming-int g0/0/1 in-label 100测试
[r3]static-lsp ingress 3-1 destination 1.1.1.1 32 nexhop 23.1.1.1 out-label 100dis mpls lsp

测试

出现能相互IP互通包就行

MPLS的ldp（人机）

拓扑

命令

[Huawei]sysname r1
[r1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip add 12.1.1.1 24
[r1-GigabitEthernet0/0/0]int lo 0
[r1-LoopBack0]ip add 1.1.1.1 32
[r1-LoopBack0]ospf 
[r1-ospf-1]area 0
[r1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0
[r1-ospf-1-area-0.0.0.0]network 12.1.1.0 0.0.0.0
[r1-ospf-1-area-0.0.0.0]mpls lsr-id 1.1.1.1 
[r1]mpls
Info: Mpls starting, please wait... OK!
[r1-mpls]q
[r1]mpls ldp
[r1-mpls-ldp]int g0/0/0
[r1-GigabitEthernet0/0/0]mpls
[r1-GigabitEthernet0/0/0]mpls ldp
[r1-GigabitEthernet0/0/0]q
[r1]q<r1>dis mpls ldp sessionLDP Session(s) in Public NetworkCodes: LAM(Label Advertisement Mode), SsnAge Unit(DDDD:HH:MM)A '*' before a session means the session is being deleted.------------------------------------------------------------------------------PeerID             Status      LAM  SsnRole  SsnAge      KASent/Rcv------------------------------------------------------------------------------2.2.2.2:0          NonExistent      Passive              0/0------------------------------------------------------------------------------TOTAL: 1 session(s) Found.

sys
un in en
sys r2
int g0/0/1
ip add 12.1.1.2 24
int g0/0/0
ip add 23.1.1.2 24
int lo 0
ip add 2.2.2.2 32
ospf 
area 0
network 2.2.2.2 0.0.0.0
network 12.1.1.0 0.0.0.255
network 23.1.1.0 0.0.0.255
mpls lsr-id 2.2.2.2
mpls
q
mpls ldp
int  g0/0/0
mpls
mpls ldp
int g0/0/1
mpls
mpls ldp

sys
un in en
sys r3
int g0/0/1
ip add 23.1.1.3 24
int g0/0/0
ip add 34.1.1.3 24
int lo 0
ip add 3.3.3.3 32
ospf 
area 0
network 3.3.3.3 0.0.0.0
network 34.1.1.0 0.0.0.255
network 23.1.1.0 0.0.0.255
mpls lsr-id 3.3.3.3
mpls
q
mpls ldp
int  g0/0/0
mpls
mpls ldp
int g0/0/1
mpls
mpls ldp

sys
int g0/0/1
ip add 34.1.1.4
int lo 0
ip add 4.4.4.4 32
ospf 
area 0
network  4.4.4.4 0.0.0.0
network 34.1.1.0 0.0.0.255
mpls lsr-id 4.4.4.4
mpls 
q
mpls ldp
int g0/0/1
mpls
mpls ldp