8일차, EIGRP실습과 OSPF 실습

 

eigrp 장비실습.net

 

FR1
en
conf t
bandwith
int loopback 0
ip address 10.10.10.1 255.255.255.0
int s1/0
bandwidth 1024
ip address 192.168.1.21 255.255.255.252
no shut
int s1/1
bandwidth 512
ip address 192.168.1.33 255.255.255.252
no shut
int s1/2
bandwidth 1024
ip address 192.168.1.45 255.255.255.252
no shut
int s1/3
bandwidth 2048
ip address 192.168.1.57 255.255.255.252
no shut
exi
router eigrp 65000
no auto-summary
network 192.168.1.20 0.0.0.3
network 192.168.1.32 0.0.0.3
network 192.168.1.44 0.0.0.3
network 192.168.1.56 0.0.0.3
network 10.10.10.0
exi

R11
en
conf t
int s1/0
no shut
ip address 192.168.1.22 255.255.255.252
bandwidth 1024
int s1/1
no shut
ip address 192.168.1.69 255.255.255.252
bandwidth 64
exi
int loopback 0
ip address 172.11.0.1 255.255.255.0
ip address 172.11.1.1 255.255.255.0 secondary
ip address 172.11.2.1 255.255.255.0 secondary
ip address 172.11.3.1 255.255.255.0 secondary
exi
router eigrp 65000
no auto-summary
network 192.168.1.20 0.0.0.3
network 192.168.1.68 0.0.0.3
network 172.11.0.0
network 172.11.1.0
network 172.11.2.0
network 172.11.3.0

R12
en
conf t
int s1/0
no shut
ip address 192.168.1.34
bandwidth 512
int s1/1
no shut
ip address 192.168.1.70 255.255.255.252
bandwidth 64
exi
int loopback 0
ip address 172.12.4.1 255.255.255.0
ip address 172.12.5.1 255.255.255.0 secondary
ip address 172.12.6.1 255.255.255.0 secondary
ip address 172.12.7.1 255.255.255.0 secondary
exi
router eigrp 65000
no auto-summary
network 192.168.1.68 0.0.0.3
network 192.168.1.32 0.0.0.3
network 172.12.4.0
network 172.12.5.0
network 172.12.6.0
network 172.12.7.0

R13
en
conf t
int s1/0
no shut
ip address 192.168.1.46 255.255.255.252
bandwidth 1024
int s1/1
no shut
bandwidth 512
ip address 192.168.1.81 255.255.255.252
exi
int loopback 0
ip address 172.13.8.1 255.255.255.0
ip address 172.13.9.1 255.255.255.0 secondary
ip address 172.13.10.1 255.255.255.0 secondary
ip address 172.13.11.1 255.255.255.0 secondary
exi
router eigrp 65000
no auto-summary
network 192.168.1.44 0.0.0.3
network 192.168.1.80 0.0.0.3
network 172.13.8.0
network 172.13.9.0
network 172.13.10.0
network 172.13.110

R14
en
conf t
int s1/1
bandwidth 512
ip address 192.168.1.82 255.255.255.252
no shut
int s1/0
bandwidth 2048
ip address 192.168.1.58 255.255.255.252
no shut
exi
int loopback 0
ip address 172.14.12.1 255.255.255.0
ip address 172.14.13.1 255.255.255.0 secondary
ip address 172.14.14.1 255.255.255.0 secondary
ip address 172.14.15.1 255.255.255.0 secondary
exi
router eigrp 65000
network 192.168.1.80 0.0.0.3
network 192.168.1.56 0.0.0.3
network 172.14.12.0
network 172.14.13.0
network 172.14.14.0
network 172.14.15.0

축약하기
R11
int s1/0
ip summary-address eigrp 65000 172.11.0.0 255.255.252.0
int s1/1
ip summary-address eigrp 65000 172.11.0.0 255.255.252.0

R12
int s1/0
ip summary-address eigrp 65000 172.12.4.0 255.255.252.0
int s1/1
ip summary-address eigrp 65000 172.12.4.0 255.255.252.0

R13
int s1/0
ip summary-address eigrp 65000 172.13.8.0 255.255.252.0
int s1/1
ip summary-address eigrp 65000 172.13.8.0 255.255.252.0

R14
int s1/0
ip summary-address eigrp 65000 172.14.12.0 255.255.252.0
int s1/1
ip summary-address eigrp 65000 172.14.12.0 255.255.252.0

링크상태(link-state)
장점-루프가 안돈다.
단점-비싸다

거리*방향-디스턴스백터
링크*상태-링크 스테이트

link : interface 정보 (선 꽂힌걸 서로서로 준다)
state : neighbor
------------------- 다합쳐서 LSA라고 부른다.(link-state-advaerisment)
LSA나 link&state로 구성한다고 한다.

1. neigbortable(hello로 먼저 만듬, 이후로 10초마다 찔러봄)
2. topology database 테이블에 다 때려넣는다. (전체 토폴로지가 들어간다)
  dual(S , FS)
Eigrp (거리), OSPF(링크,상태)

SPF(Shortest Path First)
트리구조로 바꾼뒤에 라우팅 테이블에 저장한다.

OSPF
표준
AD - 110
수렴시간 - 빠르다
동작방식 - Only classless

잦은 업데이트로 CPU부하가 심하다
정보를 모두 넣고 관리하기에 메모리 사용률이 높다

라우터 갯수
RIP 16
EIGRP 100 ~120
OSPF 계층구조라 무한대
네트워크가 클수록 CPU 사용률 증가
  저장량이 커져서 memory증가
 Bandwidth 증가

Area 단위로 나눠서 관리
backbone만 0번 area (그림에서 E 부분이 backbone이다)

백본에 붙은 라우터끼리만 하나의 에어리어로 통신이 된다.

그룹에 붙은것 Area Border Router(ABR)
ERD에 붙은 것 Autnomous system Border Router(ASBR)

 

 4장
출발지에서 목적지까지 거리값
metric (RIP,OSPF) -> cost (OSPF)

OSPF
router ospf [process-id] // 운영을 구분한다.
network address [wildcard-mask] area [area-id]

network 10.2.2.0 0.0.0.255 area 0
network 10.2.2.0 0.0.0.0 area 0 ---보내려는 쪽 ip만 적어도 된다.

OSPF는 NA까지는 축약이없다.

 

 

 

OSPF 장비 실습

ospf.net

 기본설정

FR1
int s1/0
ip address 192.168.1.1 255.255.255.252
bandwidth 64
no shut
int s1/1
ip address 192.168.1.5 255.255.255.252
bandwidth 256
no shut
int s1/2
ip address 192.168.1.9 255.255.255.252
bandwidth 512
no shut
int s1/3
ip address 192.168.1.13 255.255.255.252
bandwidth 2048
no shut

R11
int s1/0
ip address 192.168.1.2 255.255.255.252
bandwidth 64
no shut
int s1/1
ip address 192.168.1.17 255.255.255.252
bandwidth 128
no shut
exi
int loopback 0
ip address 172.11.0.1 255.255.255.0

R12
int s1/1
no shut
bandwidth 128
ip address 192.168.1.18 255.255.255.252
int s1/0
no shut
bandwidth 256
ip address 192.168.1.6 255.255.255.252
exi
int loopback 0
ip address 172.12.0.1 255.255.255.0

R13
int s1/0
ip address 192.168.1.10 255.255.255.252
bandwidth 512
no shut
int s1/1
bandwidth 1024
ip address 192.168.1.21 255.255.255.252
no shut
exi
int loopback 0
ip address 172.13.0.1 255.255.255.0

R14
int s1/0
ip address 192.168.1.14 255.255.255.252
bandwidth 2048
no shut
int s1/1
ip address 192.168.1.22 255.255.255.252
bandwidth 1024
no shut
exi
int loopback 0
ip address 172.14.0.1 255.255.255.0

OSPF 설정

network 192.168.1.8 0.0.0.3 area 1
network 192.168.1.12 0.0.0.3 area 1

R11
router ospf 100
network 192.168.1.0 0.0.0.3 area 0
network 192.168.1.16 0.0.0.3 area 0
network 172.11.0.0 0.0.0.255 area 0

R12
router ospf 100
network 192.168.1.4 0.0.0.3 area 0
network 192.168.1.16 0.0.0.3 area 0
network 172.12.0.0 0.0.0.255 area 0

R13
router ospf 100
network 192.168.1.20 0.0.0.3 area 1
network 192.168.1.8 0.0.0.3 area 1
network 172.13.0.0 0.0.0.255 area 1

R14
router ospf 100
network 192.168.1.14 0.0.0.3 area 1
network 192.168.1.22 0.0.0.3 area 1
network 172.14.0.0 0.0.0.255 area 1

O IA //interor Area (내부 area라고 하면서 다른 area에 속한 라우터 정보도 FR을 통해 나타난다)
FR은 둘다에 속해있어서 안 뜬다.

 

ACL