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ANTON
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2009-06-22 20:13:46, 조회 : 665, 추천 : 98 |
TOPOLOGY에서 처음 BGP를 해보도록
광고해서 세션이 붙었다가 끊어 졌다하는 LOOP
각라우터에 BGP측에 network 3.3.X.X 를 넣어주세욤
루프 도는거 보기 ^^
B 221.221.221.0/24 [200/0] via 3.3.4.4, 00:01:03
1.0.0.0/24 is subnetted, 1 subnets
O E2 1.1.3.0 [110/1000] via 3.3.100.3, 00:07:02, Serial0.2
50.0.0.0/32 is subnetted, 1 subnets
B 50.0.0.254 [200/0] via 3.3.4.4, 00:00:21
70.0.0.0/32 is subnetted, 1 subnets
B 70.0.0.254 [200/0] via 3.3.4.4, 00:00:22
3.0.0.0/8 is variably subnetted, 12 subnets, 2 masks
O 3.3.7.7/32 [110/11] via 3.3.27.7, 00:08:39, Ethernet0
O 3.3.1.0/24 [110/65] via 3.3.12.1, 00:00:23, Serial0.1 <-OSPF에 등록이 되어 있으니까 OSPF로 등록
C 3.3.2.0/24 is directly connected, Loopback0
O 3.3.3.0/24 [110/65] via 3.3.100.3, 00:07:04, Serial0.2
O 3.3.4.0/24 [110/65] via 3.3.100.4, 00:07:04, Serial0.2
C 3.3.12.0/24 is directly connected, Serial0.1
C 3.3.27.0/24 is directly connected, Ethernet0
O IA 3.3.47.0/24 [110/65] via 3.3.100.4, 00:07:04, Serial0.2
C 3.3.100.0/24 is directly connected, Serial0.2
C 3.3.122.0/24 is directly connected, Loopback1
B 3.3.133.0/24 [200/0] via 3.3.3.3, 00:06:03
B 3.3.144.0/24 [200/0] via 3.3.4.4, 00:01:05
4.0.0.0/24 is subnetted, 3 subnets
O E2 4.1.1.0 [110/1000] via 3.3.100.3, 00:07:04, Serial0.2
O E2 4.1.3.0 [110/1000] via 3.3.100.3, 00:07:04, Serial0.2
O E2 4.1.2.0 [110/1000] via 3.3.100.3, 00:07:05, Serial0.2
80.0.0.0/32 is subnetted, 1 subnets
B 80.0.0.254 [200/0] via 3.3.4.4, 00:00:24
20.0.0.0/32 is subnetted, 1 subnets
B 20.0.0.254 [200/0] via 3.3.4.4, 00:00:23
B 197.68.1.0/24 [200/0] via 3.3.4.4, 00:00:24
128.1.0.0/24 is subnetted, 2 subnets
O E2 128.1.1.0 [110/1000] via 3.3.100.3, 00:07:05, Serial0.2
O E2 128.1.2.0 [110/1000] via 3.3.100.3, 00:07:06, Serial0.2
129.1.0.0/24 is subnetted, 1 subnets
O E2 129.1.1.0 [110/1000] via 3.3.100.3, 00:07:06, Serial0.2
B 197.68.3.0/24 [200/0] via 3.3.4.4, 00:00:25
130.1.0.0/24 is subnetted, 1 subnets
O E2 130.1.1.0 [110/1000] via 3.3.100.3, 00:07:13, Serial0.2
40.0.0.0/32 is subnetted, 1 subnets
B 40.0.0.254 [200/0] via 3.3.4.4, 00:00:31
10.0.0.0/32 is subnetted, 1 subnets
B 10.0.0.254 [200/0] via 3.3.4.4, 00:00:31
B 197.68.5.0/24 [200/0] via 3.3.4.4, 00:00:32
O E2 192.1.1.0/24 [110/1000] via 3.3.100.3, 00:07:13, Serial0.2
O E2 192.2.1.0/24 [110/1000] via 3.3.100.3, 00:07:13, Serial0.2
O E2 192.3.1.0/24 [110/1000] via 3.3.100.3, 00:07:13, Serial0.2
O E2 192.4.1.0/24 [110/1000] via 3.3.100.3, 00:07:13, Serial0.2
B 197.68.21.0/24 [200/0] via 3.3.4.4, 00:00:32
B 192.168.1.0/24 [200/0] via 3.3.4.4, 00:00:32
B 197.68.22.0/24 [200/0] via 3.3.4.4, 00:00:32
B 192.168.2.0/24 [200/0] via 3.3.4.4, 00:00:32
150.100.0.0/24 is subnetted, 1 subnets
O E2 150.100.2.0 [110/1000] via 3.3.100.4, 00:07:13, Serial0.2
60.0.0.0/32 is subnetted, 1 subnets
B 60.0.0.254 [200/0] via 3.3.4.4, 00:00:32
30.0.0.0/32 is subnetted, 1 subnets
B 30.0.0.254 [200/0] via 3.3.4.4, 00:00:32
어라 보니까 이거또 뭐냐 BGP에서도 전파를 해주는군
R2#sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
B 221.221.221.0/24 [200/0] via 3.3.4.4, 00:02:30
B 211.211.211.0/24 [20/0] via 3.3.1.1, 00:00:48
1.0.0.0/24 is subnetted, 4 subnets
O E2 1.1.3.0 [110/1000] via 3.3.100.3, 00:08:29, Serial0.2
B 1.1.111.0 [20/0] via 3.3.1.1, 00:00:48
B 1.1.133.0 [20/0] via 3.3.1.1, 00:00:48
B 1.1.144.0 [20/0] via 3.3.1.1, 00:00:48
50.0.0.0/32 is subnetted, 1 subnets
B 50.0.0.254 [20/0] via 3.3.1.1, 00:00:48
2.0.0.0/24 is subnetted, 3 subnets
B 2.2.111.0 [20/0] via 3.3.1.1, 00:00:49
B 2.2.133.0 [20/0] via 3.3.1.1, 00:00:49
B 2.2.144.0 [20/0] via 3.3.1.1, 00:00:49
70.0.0.0/32 is subnetted, 1 subnets
B 70.0.0.254 [20/0] via 3.3.1.1, 00:00:49
3.0.0.0/8 is variably subnetted, 13 subnets, 2 masks
O 3.3.7.7/32 [110/11] via 3.3.27.7, 00:10:08, Ethernet0
B 3.3.1.0/24 [20/0] via 3.3.1.1, 00:00:49 어라 보다보나까 BGP측에서 똑같은게 올라오니까 BGP로 등록
C 3.3.2.0/24 is directly connected, Loopback0
O 3.3.3.0/24 [110/65] via 3.3.100.3, 00:08:31, Serial0.2
O 3.3.4.0/24 [110/65] via 3.3.100.4, 00:08:31, Serial0.2
C 3.3.12.0/24 is directly connected, Serial0.1
C 3.3.27.0/24 is directly connected, Ethernet0
O IA 3.3.47.0/24 [110/65] via 3.3.100.4, 00:08:31, Serial0.2
C 3.3.100.0/24 is directly connected, Serial0.2
B 3.3.111.0/24 [20/0] via 3.3.1.1, 00:00:49
C 3.3.122.0/24 is directly connected, Loopback1
B 3.3.133.0/24 [200/0] via 3.3.3.3, 00:07:30
B 3.3.144.0/24 [200/0] via 3.3.4.4, 00:02:31
4.0.0.0/24 is subnetted, 13 subnets
B 4.4.1.0 [20/0] via 3.3.1.1, 00:00:49
B 4.4.2.0 [20/0] via 3.3.1.1, 00:00:50
B 4.4.3.0 [20/0] via 3.3.1.1, 00:00:50
B 4.4.4.0 [20/0] via 3.3.1.1, 00:00:50
O E2 4.1.1.0 [110/1000] via 3.3.100.3, 00:08:32, Serial0.2
O E2 4.1.3.0 [110/1000] via 3.3.100.3, 00:08:32, Serial0.2
B 4.4.7.0 [20/0] via 3.3.1.1, 00:00:54
O E2 4.1.2.0 [110/1000] via 3.3.100.3, 00:08:36, Serial0.2
B 4.4.111.0 [20/0] via 3.3.1.1, 00:00:54
B 4.4.122.0 [20/0] via 3.3.1.1, 00:00:54
B 4.4.133.0 [20/0] via 3.3.1.1, 00:00:54
B 4.4.144.0 [20/0] via 3.3.1.1, 00:00:54
B 4.4.177.0 [20/0] via 3.3.1.1, 00:00:54
80.0.0.0/32 is subnetted, 1 subnets
B 80.0.0.254 [20/0] via 3.3.1.1, 00:00:54
20.0.0.0/32 is subnetted, 1 subnets
B 20.0.0.254 [20/0] via 3.3.1.1, 00:00:54
B 197.68.1.0/24 [20/0] via 3.3.1.1, 00:00:54
128.1.0.0/24 is subnetted, 2 subnets
O E2 128.1.1.0 [110/1000] via 3.3.100.3, 00:08:36, Serial0.2
O E2 128.1.2.0 [110/1000] via 3.3.100.3, 00:08:36, Serial0.2
129.1.0.0/24 is subnetted, 1 subnets
O E2 129.1.1.0 [110/1000] via 3.3.100.3, 00:08:36, Serial0.2
B 197.68.3.0/24 [20/0] via 3.3.1.1, 00:00:54
130.1.0.0/24 is subnetted, 1 subnets
O E2 130.1.1.0 [110/1000] via 3.3.100.3, 00:08:36, Serial0.2
40.0.0.0/32 is subnetted, 1 subnets
B 40.0.0.254 [20/0] via 3.3.1.1, 00:00:55
10.0.0.0/32 is subnetted, 1 subnets
위 현상은 LOOP 구간에서만 확인 가능하다.
위 현상이 반복된다.
간편확인
R2#sh ip route 3.3.1.0
Routing entry for 3.3.1.0/24
Known via "bgp 103", distance 20, metric 0
Tag 3, type external
Last update from 3.3.1.1 00:00:56 ago
Routing Descriptor Blocks:
* 3.3.1.1, from 3.3.1.1, 00:00:56 ago
Route metric is 0, traffic share count is 1
AS Hops 1
R2#sh ip route 3.3.1.0
Routing entry for 3.3.1.0/24
Known via "ospf 1", distance 110, metric 65, type intra area
Last update from 3.3.12.1 on Serial0.1, 00:00:00 ago
Routing Descriptor Blocks:
* 3.3.12.1, from 3.3.1.1, 00:00:00 ago, via Serial0.1
Route metric is 65, traffic share count is 1 |
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