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높고 넓은 파도
[OSPF] 실습 - SubArea 설정 본문
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사용 장비 | Arista(eveng) |
version | EOS 4.31.4M |
routing protocol model | multi-agent |
OSPF Sub-Area 설정
Router1 | Router2 | Router3 |
interface Ethernet1 description Router2 no switchport ip address 10.1.12.1/30 ip ospf network point-to-point ip ospf area 0.0.0.0 ! interface Ethernet2 description Router3 no switchport ip address 10.1.13.1/30 ip ospf network point-to-point ip ospf area 0.0.0.0 ! interface Loopback0 ip address 1.1.1.1/32 ip ospf area 0.0.0.0 ! ip routing ! router ospf 10 router-id 1.1.1.1 auto-cost reference-bandwidth 100000 max-lsa 12000 ! |
interface Ethernet1 description Router1 no switchport ip address 10.1.12.2/30 ip ospf network point-to-point ip ospf area 0.0.0.0 ! interface Ethernet2 description Router4 no switchport ip address 10.1.24.1/30 ip ospf network point-to-point ip ospf area 0.0.0.100 ! interface Ethernet3 description Router6 no switchport ip address 10.1.26.1/30 ip ospf network point-to-point ip ospf area 0.0.0.100 ! interface Loopback0 ip address 1.1.1.2/32 ip ospf area 0.0.0.0 ! ip routing ! router ospf 10 router-id 1.1.1.2 auto-cost reference-bandwidth 100000 max-lsa 12000 ! |
interface Ethernet1 description Router5 no switchport ip address 10.1.35.1/30 ip ospf network point-to-point ip ospf area 0.0.0.100 ! interface Ethernet2 description Router1 no switchport ip address 10.1.13.2/30 ip ospf network point-to-point ip ospf area 0.0.0.0 ! interface Loopback0 ip address 1.1.1.3/32 ip ospf area 0.0.0.0 ! ip routing ! router ospf 10 router-id 1.1.1.3 auto-cost reference-bandwidth 100000 max-lsa 12000 ! |
Router4 | Router5 | Router6 |
interface Ethernet2 description Router2 no switchport ip address 10.1.24.2/30 ip ospf network point-to-point ip ospf area 0.0.0.100 ! interface Loopback0 ip address 1.1.1.4/32 ip ospf area 0.0.0.100 ! ip routing ! router ospf 10 router-id 1.1.1.4 auto-cost reference-bandwidth 100000 max-lsa 12000 |
interface Ethernet1 description Router3 no switchport ip address 10.1.35.2/30 ip ospf network point-to-point ip ospf area 0.0.0.100 ! interface Loopback0 ip address 1.1.1.5/32 ip ospf area 0.0.0.100 ! ip routing ! router ospf 10 router-id 1.1.1.5 auto-cost reference-bandwidth 100000 max-lsa 12000 |
interface Ethernet3 description Router2 no switchport ip address 10.1.26.2/30 ip ospf network point-to-point ip ospf area 0.0.0.100 ! interface Loopback0 ip address 1.1.1.6/32 ip ospf area 0.0.0.100 ! ip routing ! router ospf 10 router-id 1.1.1.6 auto-cost reference-bandwidth 100000 max-lsa 12000 |
OSPF Routing Table
Router1#sh ip route VRF: default Source Codes: C - connected, S - static, K - kernel, O - OSPF, IA - OSPF inter area, E1 - OSPF external type 1, E2 - OSPF external type 2, N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type2, B - Other BGP Routes, B I - iBGP, B E - eBGP, R - RIP, I L1 - IS-IS level 1, I L2 - IS-IS level 2, O3 - OSPFv3, A B - BGP Aggregate, A O - OSPF Summary, NG - Nexthop Group Static Route, V - VXLAN Control Service, M - Martian, DH - DHCP client installed default route, DP - Dynamic Policy Route, L - VRF Leaked, G - gRIBI, RC - Route Cache Route, CL - CBF Leaked Route Gateway of last resort is not set C 1.1.1.1/32 directly connected, Loopback0 O 1.1.1.2/32 [110/110] via 10.1.12.2, Ethernet1 O 1.1.1.3/32 [110/110] via 10.1.13.2, Ethernet2 O IA 1.1.1.4/32 [110/210] via 10.1.12.2, Ethernet1 O IA 1.1.1.5/32 [110/210] via 10.1.13.2, Ethernet2 O IA 1.1.1.6/32 [110/210] via 10.1.12.2, Ethernet1 C 10.1.12.0/30 directly connected, Ethernet1 C 10.1.13.0/30 directly connected, Ethernet2 O IA 10.1.24.0/30 [110/200] via 10.1.12.2, Ethernet1 O IA 10.1.26.0/30 [110/200] via 10.1.12.2, Ethernet1 O IA 10.1.35.0/30 [110/200] via 10.1.13.2, Ethernet2 |
Router2#sh ip route VRF: default Source Codes: C - connected, S - static, K - kernel, O - OSPF, IA - OSPF inter area, E1 - OSPF external type 1, E2 - OSPF external type 2, N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type2, B - Other BGP Routes, B I - iBGP, B E - eBGP, R - RIP, I L1 - IS-IS level 1, I L2 - IS-IS level 2, O3 - OSPFv3, A B - BGP Aggregate, A O - OSPF Summary, NG - Nexthop Group Static Route, V - VXLAN Control Service, M - Martian, DH - DHCP client installed default route, DP - Dynamic Policy Route, L - VRF Leaked, G - gRIBI, RC - Route Cache Route, CL - CBF Leaked Route Gateway of last resort is not set O 1.1.1.1/32 [110/110] via 10.1.12.1, Ethernet1 C 1.1.1.2/32 directly connected, Loopback0 O 1.1.1.3/32 [110/210] via 10.1.12.1, Ethernet1 O 1.1.1.4/32 [110/110] via 10.1.24.2, Ethernet2 O IA 1.1.1.5/32 [110/310] via 10.1.12.1, Ethernet1 O 1.1.1.6/32 [110/110] via 10.1.26.2, Ethernet3 C 10.1.12.0/30 directly connected, Ethernet1 O 10.1.13.0/30 [110/200] via 10.1.12.1, Ethernet1 C 10.1.24.0/30 directly connected, Ethernet2 C 10.1.26.0/30 directly connected, Ethernet3 O IA 10.1.35.0/30 [110/300] via 10.1.12.1, Ethernet1 |
- Router 2,3은 ABR(백본 Area를 포함하여 최소 2개 이상의 Area에 소속되어 있는 라우터)임
- ABR을 통해 학습한 테이블들은 O IA로 보임 : Inter-Area
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