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MPLS setting
ip cef
mpls label protocol [ldp /tcp]
mpls ldp router-id loopback 0 => loopback이 없다면 물리적 interface ip 사용
interface g1/0
mpls ip => mpls 가 동작할 interface 지정 CE-FE 구간은 interface 지정 X
<vios1>
Router(config)#ip cef
Router(config)#mpls label protocol ldp
Router(config)#mpls ldp rou
Router(config)#mpls ldp router-id loopback 0
Router(config)#int g0/1
Router(config-if)#mpls ip
<vios2>
Router(config)#ip cef
Router(config)#mpls label protocol ldp
Router(config)#mpls ldp router-id loopback 0
Router(config)#int g0/1
Router(config-if)#mpls ip
Router(config-if)#int g0/2
Router(config-if)#mpls ip
<vios3>
Router(config)#ip cef
Router(config)#mpls label protocol ldp
Router(config)#mpls ldp router-id loopback 0
Router(config)#int g0/1
Router(config-if)#mpls ip
Router(config-if)#int g0/2
Router(config-if)#mpls ip
<vios4>
Router(config)#ip cef
Router(config)#mpls label protocol ldp
Router(config)#mpls ldp rou
Router(config)#mpls ldp router-id loopback 0
Router(config)#int g0/1
Router(config-if)#mpls ip
MPLS 구성 확인
<LDP neighbor >
show mpls ldp neighbor
<LFIB(Label forwarding information Base>
show mpls forwarding-table
pop Label 을 라벨을 제거하고 전송하라는 의미
byte label switched는 mpls 가 전송한 패킷의 양
<LIB(Label information Base>
show mpls ldp binding
MPLS 구성2
<vios2>
vios2(config)#ip cef
vios2(config)#mpls label protocol ldp
vios2(config)#mpls ldp router-id loopback 0
vios2(config)#mpls label range 20 29
vios2(config)#int g0/0
vios2(config-if)#mpls ip
<vios3>
vios3(config)#ip cef
vios3(config)#mpls label protocol ldp
vios3(config)#mpls ldp router-id loopback 0
vios3(config)#mpls label range 30 39
vios3(config)#int g0/0
vios3(config-if)#mpls ip
vios3(config)#int g0/1
vios3(config-if)#mpls ip
<vios4>
vios4(config)#ip cef
vios4(config)#mpls label protocol ldp
vios4(config)#mpls ldp router-id loopback 0
vios4(config)#mpls label range 40 49
vios4(config)#int g0/0
vios4(config-if)#mpls ip
vios4(config)#int g0/1
vios4(config-if)#mpls ip
<vios5>
vios(config)#ip cef
vios5(config)#mpls label protocol ldp
vios5(config)#mpls ldp router-id loopback 0
vios5(config)#mpls label range 50 59
vios5(config)#int g0/0
vios5(config-if)#mpls ip
vios5(config)#int g0/1
vios5(config-if)#mpls ip
clear mpls ldp neighbor *
만약에 claer해도 적용되지 않는다면 write 한 후 reload 해줍니다.
<Vios 1>
39 -> 49 -> 52 의 라벨 순으로 길을 찾아가진다.
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