Redistribuyendo las rutas de internet en OSPF
Fecha: 20 de octubre
del 2023
Escenario
Ya que teníamos el escenario armado y dado que me
encontré con el siguiente texto dije: ¿Por qué no?
Entonces procedimos a redistribuir todas las
rutas BGP en un IGP (Interior Gateway Protocol) tal como
OSPF y en un router sin capacidad, resulta una
belleza de laboratorio.
¿Sirve? Aunque no lo pondría en producción,
totalmente, si nos enseña que sucede, sirve.
1.- Configuramos OSPF:
Detalle: preliminarmente
se elimina el peering BGP entre ambos.
1.1.- En el router que
redistrubuye:
Router-BGP#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router-BGP(config)#router ospf 1
Router-BGP(config-router)#net 10.0.0.0 0.0.0.3 area 0
Router-BGP(config-router)#redistribute bgp 28020 subnets
Router-BGP(config-router)#exit
Router-BGP(config)#router bgp 28020
Router-BGP(config-router)#bgp redistribute-internal
Router-BGP(config-router)#end
Router-BGP#
OSPF-Test#config t
Enter configuration commands, one per line. End with CNTL/Z.
OSPF-Test(config)#router ospf 1
OSPF-Test(config-router)#net 10.0.0.0 0.0.0.3 area 0
OSPF-Test(config-router)#end
OSPF-Test#
Oct 20 15:42:53: %OSPF-5-ADJCHG: Process 1, Nbr
200.107.81.250 on FastEthernet0/0 from LOADING to FULL, Loading Done
OSPF-Test#
2.- Verificamos adyacencia
OSPF:
2.1.- En el router BGP/OSPF:
Router-BGP#sh ip ospf neighbor
Neighbor ID
Pri State Dead Time Address Interface
10.0.0.2
1 FULL/BDR 00:00:36 10.0.0.2 GigabitEthernet0/1
Router-BGP#
2.2.- En el router OSPF:
OSPF-Test#sh ip ospf nei
Neighbor ID
Pri State Dead Time Address Interface
200.107.81.250
1 FULL/DR 00:00:36 10.0.0.1 FastEthernet0/0
OSPF-Test#
3.- Verificamos en la tabla
de enrutamiento:
Podemos ver que aún no se comenzaron a procesar
las rutas OSPF, y esto llevará algún tiempo.
OSPF-Test#sh ip route
Codes: C - connected, S - static, 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
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
10.0.0.0/30 is subnetted, 1 subnets
C
10.0.0.0 is directly connected, FastEthernet0/0
OSPF-Test#
4.- Verificamos recursos en
el router:
Ahora la consola del router comienza a volverse
lenta...
4.1.- En el router BGP/OSPF:
Router-BGP#sh proc CPU | inc CPU
CPU utilization for five seconds: 3%/0%; one minute: 1%; five minutes: 1%
Router-BGP#
4.2.- En el router OSPF:
OSPF-Test#sh proc cpu | inc CPU
CPU utilization for five seconds: 99%/0%; one minute: 44%; five minutes: 41%
OSPF-Test#
5.- Verificamos en la tabla
de enrutamiento:
OSPF-Test#sh ip route
Codes: C - connected, S - static, 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
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
O E2 194.187.121.0/24 [110/1] via 10.0.0.1,
00:04:29, FastEthernet0/0 ( ¡
voilá ! )
O E2 194.153.91.0/24 [110/1] via 10.0.0.1,
00:04:03, FastEthernet0/0
O E2 194.68.134.0/24 [110/1] via 10.0.0.1,
00:04:33, FastEthernet0/0
O E2 194.34.224.0/24 [110/1] via 10.0.0.1,
00:04:35, FastEthernet0/0
O E2 194.0.194.0/24 [110/1] via 10.0.0.1,
00:04:37, FastEthernet0/0
O E2 193.238.47.0/24 [110/1] via 10.0.0.1,
00:04:38, FastEthernet0/0
O E2 193.221.28.0/24 [110/1] via 10.0.0.1,
00:04:39, FastEthernet0/0
O E2 193.102.167.0/24 [110/1] via 10.0.0.1,
00:04:43, FastEthernet0/0
O E2 193.34.227.0/24 [110/1] via 10.0.0.1,
00:04:45, FastEthernet0/0
O E2 193.17.208.0/24 [110/1] via 10.0.0.1,
00:04:47, FastEthernet0/0
O E2 192.170.106.0/24 [110/1] via 10.0.0.1,
00:04:51, FastEthernet0/0
O E2 192.102.166.0/24 [110/1] via 10.0.0.1,
00:04:54, FastEthernet0/0
187.187.0.0/16 is variably subnetted, 42 subnets, 6 masks
O E2
187.187.16.0/20 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.34.0/23 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.36.0/22 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.40.0/21 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2 187.187.48.0/22 [110/1] via 10.0.0.1,
00:05:42, FastEthernet0/0
O E2
187.187.52.0/24 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.53.0/24 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.56.0/21 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.64.0/19 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.96.0/20 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.112.0/24 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.116.0/24 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.117.0/24 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2 187.187.118.0/23
[110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.120.0/21 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.128.0/19 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.176.0/20 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.192.0/23 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.192.0/22 [110/1] via 10.0.0.1, 00:04:11, FastEthernet0/0
O E2
187.187.194.0/23 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2 187.187.196.0/23
[110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.196.0/22 [110/1] via 10.0.0.1, 00:04:11, FastEthernet0/0
O E2
187.187.198.0/23 [110/1] via 10.0.0.1, 00:05:42, FastEthernet0/0
O E2
187.187.200.0/21 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.204.0/22 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.208.0/21 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.216.0/23 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2 187.187.218.0/23
[110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.220.0/23 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.222.0/23 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.224.0/23 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.224.0/22 [110/1] via 10.0.0.1, 00:04:17, FastEthernet0/0
O E2
187.187.226.0/23 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.228.0/23 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2 187.187.228.0/22
[110/1] via 10.0.0.1, 00:04:17, FastEthernet0/0
O E2
187.187.230.0/23 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.232.0/22 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.236.0/22 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.240.0/21 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.248.0/23 [110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
O E2
187.187.248.0/22 [110/1] via 10.0.0.1, 00:04:17, FastEthernet0/0
O E2 187.187.250.0/23
[110/1] via 10.0.0.1, 00:05:48, FastEthernet0/0
170.170.0.0/16 is variably subnetted, 28 subnets, 5 masks
O E2
170.170.0.0/17 [110/1] via 10.0.0.1, 00:07:54, FastEthernet0/0
O E2
170.170.0.0/16 [110/1] via 10.0.0.1, 00:04:25, FastEthernet0/0
O E2
170.170.56.0/22 [110/1] via 10.0.0.1, 00:07:54, FastEthernet0/0
O E2
170.170.128.0/17 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.192.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.192.0/22 [110/1] via 10.0.0.1, 00:04:26, FastEthernet0/0
O E2
170.170.193.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.194.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.195.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.196.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.196.0/23 [110/1] via 10.0.0.1, 00:04:26, FastEthernet0/0
O E2
170.170.197.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.200.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.200.0/23 [110/1] via 10.0.0.1, 00:04:26, FastEthernet0/0
O E2
170.170.201.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.204.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.204.0/22 [110/1] via 10.0.0.1, 00:04:26, FastEthernet0/0
O E2
170.170.205.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.206.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.207.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.224.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.224.0/22 [110/1] via 10.0.0.1, 00:04:26, FastEthernet0/0
O E2
170.170.225.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.226.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.227.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.228.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2
170.170.228.0/23 [110/1] via 10.0.0.1, 00:04:27, FastEthernet0/0
O E2
170.170.229.0/24 [110/1] via 10.0.0.1, 00:07:55, FastEthernet0/0
O E2 196.1.196.0/24 [110/1] via 10.0.0.1,
00:04:32, FastEthernet0/0
O E2 194.50.241.0/24 [110/1] via 10.0.0.1,
00:04:45, FastEthernet0/0
O E2 194.35.224.0/24 [110/1] via 10.0.0.1,
00:04:45, FastEthernet0/0
O E2 194.1.194.0/24 [110/1] via 10.0.0.1,
00:04:48, FastEthernet0/0
O E2 193.35.227.0/24 [110/1] via 10.0.0.1,
00:04:56, FastEthernet0/0
O E2 193.16.208.0/24 [110/1] via 10.0.0.1,
00:04:57, FastEthernet0/0
O E2 192.35.226.0/24 [110/1] via 10.0.0.1,
00:05:08, FastEthernet0/0
187.186.0.0/16 is variably subnetted, 13 subnets, 5 masks
O E2
187.186.0.0/20 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2
187.186.16.0/20 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2
187.186.48.0/21 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2
187.186.56.0/21 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2 187.186.64.0/19 [110/1] via 10.0.0.1,
00:05:50, FastEthernet0/0
O E2
187.186.96.0/20 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2
187.186.141.0/24 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2
187.186.184.0/21 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2
187.186.192.0/19 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2
187.186.224.0/20 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2
187.186.242.0/24 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2 187.186.248.0/22
[110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
O E2
187.186.252.0/22 [110/1] via 10.0.0.1, 00:05:50, FastEthernet0/0
170.171.0.0/16 is variably subnetted, 11 subnets, 3 masks
O E2
170.171.0.0/20 [110/1] via 10.0.0.1, 00:07:56, FastEthernet0/0
O E2
170.171.14.0/24 [110/1] via 10.0.0.1, 00:07:56, FastEthernet0/0
O E2
170.171.16.0/20 [110/1] via 10.0.0.1, 00:07:56, FastEthernet0/0
O E2
170.171.32.0/23 [110/1] via 10.0.0.1, 00:07:56, FastEthernet0/0
O E2
170.171.64.0/20 [110/1] via 10.0.0.1, 00:07:56, FastEthernet0/0
O E2
170.171.192.0/24 [110/1] via 10.0.0.1, 00:07:56, FastEthernet0/0
O E2 170.171.208.0/20
[110/1] via 10.0.0.1, 00:07:56, FastEthernet0/0
O E2
170.171.224.0/20 [110/1] via 10.0.0.1, 00:07:56, FastEthernet0/0
O E2
170.171.240.0/23 [110/1] via 10.0.0.1, 00:07:56, FastEthernet0/0
O E2
170.171.240.0/20 [110/1] via 10.0.0.1, 00:04:27, FastEthernet0/0
O E2
170.171.252.0/23 [110/1] via 10.0.0.1, 00:07:56, FastEthernet0/0
O E2 196.32.230.0/24 [110/1] via 10.0.0.1,
00:04:32, FastEthernet0/0
O E2 195.155.90.0/24 [110/1] via 10.0.0.1,
00:04:36, FastEthernet0/0
O E2 195.19.210.0/24 [110/1] via 10.0.0.1,
00:04:39, FastEthernet0/0
O E2 194.87.151.0/24 [110/1] via 10.0.0.1,
00:04:44, FastEthernet0/0
O E2 194.32.224.0/24 [110/1] via 10.0.0.1,
00:04:46, FastEthernet0/0
O E2 193.138.73.0/24 [110/1] via 10.0.0.1,
00:04:53, FastEthernet0/0
O E2 193.100.167.0/24 [110/1] via 10.0.0.1,
00:04:55, FastEthernet0/0
O E2 193.32.227.0/24 [110/1] via 10.0.0.1,
00:04:57, FastEthernet0/0
O E2 192.223.29.0/24 [110/1] via 10.0.0.1,
00:05:00, FastEthernet0/0
O E2 192.138.72.0/24 [110/1] via 10.0.0.1, 00:05:04,
FastEthernet0/0
O E2 192.100.166.0/24 [110/1] via 10.0.0.1,
00:05:06, FastEthernet0/0
187.185.0.0/16 is variably subnetted, 50 subnets, 4 masks
O E2
187.185.14.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.15.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.32.0/22 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.32.0/21 [110/1] via 10.0.0.1, 00:04:22, FastEthernet0/0
O E2
187.185.36.0/22 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.47.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.56.0/21 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.64.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.70.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.71.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.68.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.69.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.80.0/22 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.80.0/21 [110/1] via 10.0.0.1, 00:04:22, FastEthernet0/0
O E2
187.185.84.0/22 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.96.0/20 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.112.0/20 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.144.0/21 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.154.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2 187.185.158.0/24 [110/1] via 10.0.0.1,
00:05:53, FastEthernet0/0
O E2
187.185.159.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.156.0/24 [110/1] via 10.0.0.1, 00:05:53, FastEthernet0/0
O E2
187.185.157.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.162.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.163.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.160.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2 187.185.161.0/24 [110/1] via 10.0.0.1,
00:05:57, FastEthernet0/0
O E2
187.185.166.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.167.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.164.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.165.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.172.0/22 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.178.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2 187.185.179.0/24 [110/1] via 10.0.0.1,
00:05:57, FastEthernet0/0
O E2
187.185.176.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.177.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.182.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.183.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.180.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.181.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2 187.185.184.0/22
[110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.190.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2 187.185.191.0/24
[110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.192.0/20 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.208.0/20 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.221.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.224.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.228.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.185.240.0/21 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2 187.185.248.0/21
[110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2 196.3.196.0/24 [110/1] via 10.0.0.1,
00:04:40, FastEthernet0/0
O E2 195.3.195.0/24 [110/1] via 10.0.0.1,
00:04:46, FastEthernet0/0
O E2 194.48.241.0/24 [110/1] via 10.0.0.1,
00:04:53, FastEthernet0/0
O E2 193.169.107.0/24 [110/1] via 10.0.0.1,
00:04:59, FastEthernet0/0
O E2 192.169.106.0/24 [110/1] via 10.0.0.1,
00:05:09, FastEthernet0/0
O E2 192.71.132.0/24 [110/1] via 10.0.0.1,
00:05:14, FastEthernet0/0
O E2 192.48.243.0/24 [110/1] via 10.0.0.1,
00:05:15, FastEthernet0/0
187.184.0.0/16 is variably subnetted, 29 subnets, 4 masks
O E2
187.184.4.0/22 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.184.8.0/22 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.184.12.0/22 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.184.16.0/22 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.184.24.0/22 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.184.28.0/22 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.184.32.0/20 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.184.64.0/20 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.184.96.0/22 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.184.100.0/22 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.184.104.0/22 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.108.0/22 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2 187.184.112.0/22
[110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.116.0/22 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.120.0/22 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.124.0/22 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.128.0/20 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.152.0/22 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.156.0/22 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2 187.184.160.0/22
[110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.164.0/22 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.168.0/22 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.172.0/22 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.176.0/21 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.184.0/21 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.192.0/20 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2 187.184.220.0/24
[110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.232.0/21 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
O E2
187.184.240.0/21 [110/1] via 10.0.0.1, 00:05:58, FastEthernet0/0
170.169.0.0/16 is variably subnetted, 31 subnets, 3 masks
O E2
170.169.0.0/16 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.35.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.34.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.33.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.32.0/19 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.36.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.58.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.57.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.56.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.63.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.62.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.93.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.98.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2 170.169.97.0/24
[110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.96.0/19 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.101.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.100.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.111.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.127.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.126.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2 170.169.129.0/24
[110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.128.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.128.0/19 [110/1] via 10.0.0.1, 00:04:35, FastEthernet0/0
O E2
170.169.135.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.134.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.133.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.139.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.138.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.137.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.160.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2
170.169.224.0/24 [110/1] via 10.0.0.1, 00:08:03, FastEthernet0/0
O E2 195.234.45.0/24 [110/1] via 10.0.0.1,
00:04:41, FastEthernet0/0
O E2 193.234.47.0/24 [110/1] via 10.0.0.1,
00:04:57, FastEthernet0/0
O E2 193.140.73.0/24 [110/1] via 10.0.0.1,
00:05:01, FastEthernet0/0
O E2 193.98.167.0/24 [110/1] via 10.0.0.1,
00:05:02, FastEthernet0/0
O E2 192.251.63.0/24 [110/1] via 10.0.0.1,
00:05:06, FastEthernet0/0
O E2 192.157.89.0/24 [110/1] via 10.0.0.1,
00:05:11, FastEthernet0/0
187.191.0.0/16 is variably subnetted, 74 subnets, 5 masks
O E2 187.191.4.0/24
[110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.191.6.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2 187.191.0.0/24
[110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.191.1.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.191.2.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.191.3.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.191.12.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.191.14.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.191.15.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.191.8.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
O E2
187.191.10.0/24 [110/1] via 10.0.0.1, 00:05:57, FastEthernet0/0
---resumido---
OSPF-Test#
6.- Verificamos eel total de
rutas aprendidas:
OSPF-Test#sh ip route summary
IP routing table name is
Default-IP-Routing-Table(0)
IP routing table maximum-paths is 16
Route Source
Networks Subnets Overhead
Memory (bytes)
connected
0 1
72
136
static
0 0
0
0
bgp 65534
0 0
0
0
External:
0 Internal: 0 Local: 0
ospf 1
54092
757209 58413672 110336936
Intra-area: 1 Inter-area: 0 External-1: 0 External-2: 811300
NSSA
External-1: 0 NSSA External-2: 0
internal
8079
9339324
Total 62171 757210 58413744
119676396
Removing Queue Size 0 | |
OSPF-Test#
Mbytes KBytes
7.- Verificamos el proceso
con debug:
OSPF-Test#debug ip ospf spf
OSPF spf events debugging is on
OSPF spf intra events debugging is on
OSPF spf inter events debugging is on
OSPF spf external events debugging is on
OSPF-Test#
*Oct 20 15:42:19:
%LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/0, changed state
to up
*Oct 20 15:42:19.827: OSPF: Schedule SPF in area
0
Change
in LS ID 10.0.0.2, LSA type R, , spf-type Full
*Oct 20 15:42:24.827: OSPF: running SPF for area
0, SPF-type Full
*Oct 20 15:42:24.827: OSPF: Initializing to run
spf
*Oct 20 15:42:24.827: OSPF - spf_intra() - rebuilding the tree
*Oct 20 15:42:24.827: It is a router LSA 10.0.0.2. Link Count 1
*Oct 20 15:42:24.827: Processing link 0, id 10.0.0.0, link data
255.255.255.252, type 3, cost 1
*Oct 20 15:42:24.827: Add better path to LSA ID 10.0.0.3, gateway
10.0.0.0, dist 1
*Oct 20 15:42:24.827: Add path: next-hop 10.0.0.2, interface
FastEthernet0/0
*Oct 20 15:42:24.827: OSPF: Adding Stub nets
*Oct 20 15:42:24.827: OSPF: insert route list LS
ID 10.0.0.3, type 0, adv rtr 10.0.0.2
*Oct 20 15:42:24.827: OSPF: Entered old delete
routine area 0
*Oct 20 15:42:24.827: OSPF:
ospf_gen_asbr_sum_all_areas
*Oct 20 15:42:24.827: OSPF: running spf for
summaries area 0
*Oct 20 15:42:24.827: OSPF: sum_delete_old_routes
area 0
*Oct 20 15:42:24.827: OSPF: Started Building Type
5 External Routes
*Oct 20 15:42:24.827: OSPF: ex_delete_old_routes
*Oct 20 15:42:24.827: OSPF: Started Building Type
7 External Routes
*Oct 20 15:42:24.827: OSPF: ex_delete_old_routes
*Oct 20 15:43:01.643: OSPF: Schedule SPF in area
0
Change in LS ID 200.107.81.250, LSA type R, , spf-type Full
*Oct 20 15:43:01.643: OSPF: Schedule partial SPF
- type 5 id 1.0.0.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.643: OSPF: Schedule partial SPF
- type 5 id 1.0.4.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.643: OSPF: Schedule partial SPF
- type 5 id 1.0.5.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.643: OSPF: Schedule partial SPF
- type 5 id 1.0.16.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.643: OSPF: Schedule partial SPF
- type 5 id 1.0.32.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.647: OSPF: Schedule partial SPF
- type 5 id 1.0.64.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.647: OSPF: Schedule partial SPF
- type 5 id 1.0.144.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.647: OSPF: Schedule partial SPF
- type 5 id 1.0.159.255 adv rtr 200.107.81.250
*Oct 20 15:43:01.647: OSPF: Schedule partial SPF
- type 5 id 1.0.160.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.651: OSPF: Schedule partial SPF
- type 5 id 1.0.164.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.651: OSPF: Schedule partial SPF
- type 5 id 1.0.165.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.651: OSPF: Schedule partial SPF
- type 5 id 1.0.166.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.651: OSPF: Schedule partial SPF
- type 5 id 1.0.167.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.651: OSPF: Schedule partial SPF
- type 5 id 1.0.168.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.651: OSPF: Schedule partial SPF
- type 5 id 1.0.169.0 adv rtr 200.107.81.250
*Oct 20 15:43:01.651: OSPF: Schedule partial SPF
- type 5 id 1.0.170.0 adv rtr 200.107.81.250
---resumido---
8 minutos después…
|
*Oct 20 15:50:10.711: %SYS-3-CPUHOG: Task is
running for (2004)msecs, more than (2000)msecs (1/1),process = OSPF-1 Router.
-Traceback= 0x4025349C 0x411BC0D8 0x411BEC40
0x411BED8C 0x41C4E5C8 0x41C52910 0x41C10148 0x421FF160 0x421FF144 l
*Oct 20 15:50:10.711: OSPF: Did not find route to
ASBR 200.107.81.250
*Oct 20 15:50:10.711: OSPF: Start processing Type
5 External LSA 95.128.183.0, mask 255.255.255.0, adv 200.107.81.250, age 342,
seq 0x80000006, metric 1, metric-type 2
*Oct 20 15:50:10.711: OSPF: Did not find route to
ASBR 200.107.81.250
*Oct 20
15:50:10.711:%SYS-3-CPUYLD: Task ran for (3836)msecs, more than (2000)msecs
(1/1),process = OSPF-1 Router
*Oct 20 15:48: (aquí el buffer de logs vuelve 2 minutos en el tiempo y comienzan a
perderse datos de los logs)
*Oct 20 15:48:
*Oct 20 15:48:49.279: OSPF: Di
*Oct 20 15:48:49.279: OSPF: Di
*Oct 20 15:48:
*Oct 20 15:48:
*Oct 20 15:48:59.371: OSPF: Did not find route
*Oct 20 15:48:
*Oct 20 15:48:
*Oct 20 15:48:
*Oct 20 15:49:09.623: OSPF: Start processing T
*Oct 20 15:49:
*Oct 20 15:49:
*Oct 20 15:49:
*Oct 20 15:49:
*Oct 20 15:49:19.635: OSPF: Did not find route
*Oct 20 15:49:
*Oct 20 15:50:10.711: OSPF: Start processing Type
5 External LSA 95.128.149.0,
*Oct 20 15:50:10.711: OSPF: Start processing Type
5 External LSA 95.128.184.0, mask 255.255.254.0, adv 200.107.81.250, age 342,
seq 0x80000006, metric 1, metric-type 2
*Oct 20 15:50:10.711: OSPF: Did not find route to
ASBR 200.107.81.250
---resumido---
*Oct 20 15:53:34.635: OSPF: Schedule partial SPF
- type 5 id 153.32.0.0 adv rtr 200.107.81.250
*Oct 20 15:53:34.639: OSPF: Schedule partial SPF
- type 5 id 153.32.24.0 adv rtr 200.107.81.250
*Oct 20 15:53:34.639: OSPF: Schedule partial SPF
- type 5 id 153.33.0.0 adv rtr 200.107.81.250
*Oct 20 15:53:34.639: OSPF: Schedule partial SPF
- type 5 id 153.33.2.0 adv rtr 200.107.81.250
*Oct 20 15:53:34.639: OSPF: Schedule partial SPF
- type 5 id 153.33.3.0 adv rtr 200.107.81.250
*Oct 20 15:53:34.639: OSPF: Schedule partial SPF
- type 5 id 153.33.4.0 adv rtr 200.107.81.250
*Oct 20 15:53:34.639: OSPF: Schedule partial SPF
- type 5 id 153.33.6.0 adv rtr 200.107.81.250 (ahora deja de agregarle timestamps a los logs)
OSPF process partial spfQ entryrtial S
*Oct 20
OSPF process partial spfQ entry
OSPF process partial spfQ LSA id 1.20.200.0: mask
255.255.255.0, type 5 adv_rtr 200.107.81.250, age 1774, seq 0x80000005 (Area
dummy area)
OSPF: Start partial processing Type 5 External
LSA 1.20.200.0, mask 255.255.255.0, adv 200.107.81.250, age 1774, seq
0x80000005, metric 1, metric-type 2
OSPF: Did not find route to ASBR 200.107.81.250
%SYS-3-CPUHOG: Task is running
for (2004)msecs, more than (2000)msecs (1/0),process = OSPF-1 Router.
-Traceback= 0x4025349C 0x411D1904 0x411D0DFC
0x411D120C 0x411D10C8 0x411D1590 0x411BEC54 0x411BED8C 0x41C4D7C4 0x41C4E250
0x41C4E2C4 0x41C4E400 0x41C53CA8 0x41C53FB0
0x41C1000C 0x421FF160 07.81.250
OSPF process partial spfQ LSA id 1.20.205.0: mask
255.255.255.0, type 5 adv_rtr 200.107.81.250, age 1777, seq 0x80000005 (Area
dummy area)
OSPF: Start partial processing Type 5 External
LSA 1.20.205.0, mask 255.255.255.0, adv 200.107.81.250, age 1777, seq
0x80000005, metric 1, metric-type 2
OSPF: Did not find route to ASBR 200.107.81.250
%SYS-3-CPUHOG: Task is running for (4004)msecs,
more than (2000)msecs (1/0),process = OSPF-1 Router.
-Traceback= 0x4025349C 0x411D1904 0x411D0FB0
0x411D1590 0x411BEC54 0x411BED8C 0x41C539F0 0x41C53FB0 0x41C1000C 0x421FF160
0x421FF144
5 adv_rtr 200.107.81.250, age 1778, seq 0x80000005 (Area dummy area)
%SYS-3-CPUHOG: Task is running for (6004)msecs,
more than (2000)msecs (1/0),process = OSPF-1 Router.
-Traceback= 0x4025349C 0x411D1904 0x411D0FB0
0x411D1590 0x411BEC54 0x411BED8C 0x41C4D32C 0x41C4E250 0x41C4E2C4 0x41C4E400
0x41C53CA8 0x41C53FB0 0x41C1000C 0x421FF160
0x421FF144 sk 255.255.255.0, adv 200.107.81.250, age 1780, seq 0x80000005,
metric 1, metric-type 2
%SYS-3-CPUYLD: Task ran for (9952)msecs, more
than (2000)msecs (2/0),process = OSPF-1 Router 15:52:58.271: OSPF: Sc
*Oct 20
OSPF process partial spfQ entry 15:52:58.271: O
OSPF: Service partial SPF 0/1523/0
OSPF process partial spfQ entry
OSPF process partial spfQ entry
OSPF process partial spfQ LSA id 1.20.225.0: mask
255.255.255.0, type 5 adv_rtr 200.107.81.250, age 1784, seq 0x80000005 (Area
dummy area)
%SYS-3-CPUHOG: Task is running for (10004)msecs,
more than (2000)msecs (1/0),process = OSPF-1 Router.
-Traceback= 0x4025349C 0x411D1904 0x411D0DFC
0x411D120C 0x411D10C8 0x411D1590 0x411BEC54 0x411BED8C 0x41C4D32C 0x41C4E250
0x41C4E2C4 0x41C4E400 0x41C53CA8 0x41C53FB0
0x41C1000C 0x421FF160 0, adv 200.107.81.250, age 213, seq 0x80000006, metric 1,
metric-type 2
OSPF: Did not find route to ASBR 200.107.81.250
%SYS-3-CPUYLD: Task ran for (10476)msecs, more
than (2000)msecs (1/0),process = OSPF-1 Router4.0 adv rtr 200.107.81.250 (aquí se recupera el timestamp)
*Oct 20 15:53:07.143: Ochedule partial SPF - type
5 id 153.33.42.0 adv rtr 200.107.81.250
*Oct 20 15:53:43.819: OSPF: Schedule partial SPF
- type 5 id 153.33.43.0 adv rtr 200.107.81.250
*Oct 20 15:53:43.819: OSPF: Schedule partial SPF
- type 5 id 153.33.44.0 adv rtr 200.107.81.250
*Oct 20 15:53:43.819: OSPF: Schedule partial SPF
- type 5 id 153.33.46.0 adv rtr 200.107.81.250
*Oct 20 15:53:43.819: OSPF: Schedule partial SPF
- type 5 id 153.33.48.0 adv rtr 200.107.81.250
*Oct 20 16:08:49.487: OSPF: Schedule partial SPF
- type 5 id 190.30.218.176 adv rtr 200.107.81.250
*Oct 20 16:08:49.487: OSPF: Schedule partial SPF
- type 5 id 190.30.218.248 adv rtr 200.107.81.250
*Oct 20 16:08:49.487: OSPF: Schedule partial SPF
- type 5 id 190.30.219.0 adv rtr 200.107.81.250
*Oct 20 16:08:49.487: OSPF: Schedule partial SPF
- type 5 id 190.30.219.24 adv rtr 200.107.81.250
*Oct 20 16:08:49.487: OSPF: Schedule partial SPF
- type 5 id 190.30.219.184 adv rtr 200.107.81.250
*Oct 20 16:08:49.487: OSPF: Schedule partial SPF
- type 5 id 190.30.220.184 adv rtr 200.107.81.250
*Oct 20 16:08:49.487: OSPF: Schedule partial SPF
- type 5 id 190.30.221.8 adv rtr 200.107.81.250
*Oct 20 16:08:49.491: OSPF: Schedule partial SPF
- type 5 id 190.30.221.16 adv rtr 200.107.81.250 (fin de la captura de logs)
(2023) lower down?
you already need a shovel
Rosario, Argentina