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Справочник по настройке сетевого оборудования Cisco
r1(config)#access-list 1 permit 10.10.1.0 0.0.0.255
r1(config)#route-map NET permit 10
r1(config-route-map)#match ip address 1
r1(config)# interface FastEthernet0/0
r1(config-if)#ip summary-address eigrp 1 0.0.0.0 0.0.0.0 5 leak-map NET
Проверка осуществляется командой:
r4#show ip route eigrp
10.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
D 10.10.0.0/24 [90/161280] via 10.0.34.3, 00:04:16, FastEthernet0/0
D 10.10.1.0/24 [90/161280] via 10.0.34.3, 00:04:16, FastEthernet0/0
D 10.0.12.0/24 [90/33280] via 10.0.34.3, 01:32:57, FastEthernet0/0
D 10.2.2.2/32 [90/158720] via 10.0.34.3, 01:32:57, FastEthernet0/0
D 10.3.3.3/32 [90/156160] via 10.0.34.3, 01:32:57, FastEthernet0/0
D 10.0.23.0/24 [90/30720] via 10.0.34.3, 01:32:57, FastEthernet0/0
D* 0.0.0.0/0 [90/35840] via 10.0.34.3, 00:00:08, FastEthernet0/0
EIGRP процедура проверки подлинности (Authentication)
Приведен пример идентификации данного протокола, обратите внимание, что все действия осуществляются на интерфейсах. Слово cisco в данном случае является паролем и должно быть другим.
r1(config)#key chain eigrp
r1(config-keychain)#key 1
r1(config-keychain-key)#key-string cisco
r1(config)# interface FastEthernet0/0
r1(config-if)#ip authentication mode eigrp 1 md5
r1(config-if)#ip authentication key-chain eigrp 1 eigrp
r2(config)#key chain eigrp
r2(config-keychain)#key 1
r2(config-keychain-key)#key-string cisco
r2(config)# interface FastEthernet0/0
r2(config-if)#ip authentication mode eigrp 1 md5
r2(config-if)#ip authentication key-chain eigrp 1 eigrp
Проверка осуществляется командой:
r2#debug eigrp packet
*Mar 1 20:43:33.014: EIGRP: Sending HELLO on Loopback0
*Mar 1 20:43:33.014: AS 1, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ un/rely 0/0
*Mar 1 20:43:33.022: EIGRP: Received HELLO on Loopback0 nbr 10.2.2.2
*Mar 1 20:43:33.022: AS 1, Flags 0x0, Seq 0/0 idbQ 0/0
*Mar 1 20:43:33.022: EIGRP: Packet from ourselves ignored
*Mar 1 20:43:33.198: EIGRP: Sending HELLO on FastEthernet0/0
*Mar 1 20:43:33.198: AS 1, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ un/rely 0/0
*Mar 1 20:43:33.542: EIGRP: Received HELLO on FastEthernet0/1 nbr 10.0.24.4
*Mar 1 20:43:33.546: AS 1, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ un/rely 0/0 peerQ un/rely 0/0
r2#
*Mar 1 20:43:35.098: EIGRP: received packet with MD5 authentication, key id = 1
*Mar 1 20:43:35.098: EIGRP: Received HELLO on FastEthernet0/0 nbr 10.0.12.1
*Mar 1 20:43:35.098: AS 1, Flags 0x0, Seq 0/0 idbQ 0/0 iidbQ un/rely 0/0 peerQ un/rely 0/0
EIGRP
разрыв
горизонта
(EIGRP Split Horizon)
Данная команда включена по умолчанию и служит для предотвращения образования петель, но в случаи показанном ниже, требуется её отключить, так как на интерфейс S0/0 маршруты приходят от двух разных маршрутизаторов.
r1(config)#interface Serial0/0
r1(config-if)#no ip split-horizoh eigrp 1
Таймеры EIGRP (EIGRP Timers)
Можно изменить время схождения данного протокола, делается это также на интерфейсах, но в обязательном порядке должно быть сделано на все интерфейсах в пределах одной автономной системы.
r1(config)# interface FastEthernet0/0
r1(config-if)# ip hello-interval eigrp 1
r1(config-if)# ip hold-time eigrp 1 3
EIGRP фильтрация со стандартным листом доступа (Filtering with Standard ACL)
В последующих примерах используется приведённая ниже схема.
На маршрутизаторе r1 подняты два хоста и они достигают маршрутизатор r4 через интерфейс FastEthernet0/0, а нам нужно, чтобы они приходили, через FastEthernet0/1.
r4#show ip route eigrp
10.0.0.0/8 is variably subnetted, 10 subnets, 2 masks
D 10.0.10.1/32 [90/435200] via 10.0.34.3, 00:01:35, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:01:35, FastEthernet0/1
D 10.0.12.0/24 [90/307200] via 10.0.24.2, 00:18:11, FastEthernet0/1
D 10.0.13.0/24 [90/307200] via 10.0.34.3, 00:18:11, FastEthernet0/0
10.2.2.2/32 [90/409600] via 10.0.24.2, 00:18:11, FastEthernet0/1
D 10.3.3.3/32 [90/409600] via 10.0.34.3, 00:18:17, FastEthernet0/0
D 10.1.1.1/32 [90/435200] via 10.0.34.3, 00:18:11, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:18:11, FastEthernet0/1
D 10.0.100.1/32 [90/435200] via 10.0.34.3, 00:01:28, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:01:28, FastEthernet0/1
Создаем простой лист доступа и ставим запрет на данные хосты, после этого применяем данный лист доступа как показано ниже:
r4(config)#access-list 1 deny 10.0.10.0 0.0.0.255
r4(config)#access-list 1 deny 10.0.100.0 0.0.0.255
r4(config)#access-list 1 permit any
r4(config)#router eigrp 1
r4(config-router)#distribute-list 1 in FastEthernet 0/0
В результате проверки получаем нужный нам результат.
r4#show ip route eigrp
10.0.0.0/8 is variably subnetted, 10 subnets, 2 masks
D 10.0.10.1/32 [90/435200] via 10.0.24.2, 00:00:32, FastEthernet0/1
D 10.0.12.0/24 [90/307200] via 10.0.24.2, 00:21:22, FastEthernet0/1
D 10.0.13.0/24 [90/307200] via 10.0.34.3, 00:21:22, FastEthernet0/0
D 10.2.2.2/32 [90/409600] via 10.0.24.2, 00:21:22, FastEthernet0/1
D 10.3.3.3/32 [90/409600] via 10.0.34.3, 00:21:29, FastEthernet0/0
D 10.1.1.1/32 [90/435200] via 10.0.34.3, 00:21:22, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:21:22, FastEthernet0/1
D 10.0.100.1/32 [90/435200] via 10.0.24.2, 00:00:32, FastEthernet0/1
EIGRP фильтрация с расширенным листом доступа (Filtering with Extended ACL)
Схема аналогична.
Для начало смотрим как приходят данные сети:
r4#show ip route eigrp
10.0.0.0/8 is variably subnetted, 10 subnets, 2 masks
D 10.0.10.1/32 [90/435200] via 10.0.34.3, 00:00:30, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:00:30, FastEthernet0/1
D 10.0.12.0/24 [90/307200] via 10.0.24.2, 00:24:23, FastEthernet0/1
D 10.0.13.0/24 [90/307200] via 10.0.34.3, 00:24:23, FastEthernet0/0
D 10.2.2.2/32 [90/409600] via 10.0.24.2, 00:24:23, FastEthernet0/1
D 10.3.3.3/32 [90/409600] via 10.0.34.3, 00:24:30, FastEthernet0/0
D 10.1.1.1/32 [90/435200] via 10.0.34.3, 00:24:23, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:24:23, FastEthernet0/1
D 10.0.100.1/32 [90/435200] via 10.0.34.3, 00:00:30, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:00:30, FastEthernet0/1
Создаем и применяем расширенный лист доступа.
r4(config)#access-list 100 deny ip host 10.0.10.1 host 10.4.4.4
r4(config)#access-list 100 deny ip host 10.0.100.1 host 10.4.4.4
r4(config)#access-list 100 permit ip any any
r4(config)#router eigrp 1
r4(config-router)#distribute-list 100 in FastEthernet 0/0
И получаем нужный нам результат.
r4#show ip route eigrp
10.0.0.0/8 is variably subnetted, 10 subnets, 2 masks
D 10.0.10.1/32 [90/435200] via 10.0.24.2, 00:01:17, FastEthernet0/1
D 10.0.12.0/24 [90/307200] via 10.0.24.2, 00:01:17, FastEthernet0/1
D 10.0.13.0/24 [90/332800] via 10.0.24.2, 00:01:17, FastEthernet0/1
D 10.2.2.2/32 [90/409600] via 10.0.24.2, 00:04:09, FastEthernet0/1
D 10.3.3.3/32 [90/460800] via 10.0.24.2, 00:01:17, FastEthernet0/1
D 10.1.1.1/32 [90/435200] via 10.0.24.2, 00:01:17, FastEthernet0/1
D 10.0.100.1/32 [90/435200] via 10.0.24.2, 00:01:17, FastEthernet0/1
EIGRP
фильтрация
с
префикс
листом
(Filtering with Prefix-List)
В данном примере, мы запрещаем распространение адреса 10.4.4.4 и не пускаем на маршрутизатор r4 адрес 10.1.1.1.
r4(config)#ip prefix-list r4_out seq 5 deny 10.4.4.4/32
r4(config)#ip prefix-list r4_out seq 10 permit 0.0.0.0/0 le 32
r4(config)# ip prefix-list r4_in seq 5 deny 10.1.1.1/32
r4(config)# ip prefix-list r4_in seq 10 permit 0.0.0.0/0 le 32
r4(config)#router eigrp 1
r4(config-router)#distribute-list prefix r4_out out
r4(config-router)#distribute-list prefix r4_in in
В результате проверки, мы видим, что на маршрутизаторах r1 и r2 нет адреса 10.4.4.4, а адрес 10.1.1.1 присутствует на маршрутизаторе r2, а на r4 его нет.
r1#show ip route eigrp
10.0.0.0/8 is variably subnetted, 9 subnets, 2 masks
D 10.2.2.2/32 [90/409600] via 10.0.12.2, 01:16:56, FastEthernet0/0
D 10.3.3.3/32 [90/409600] via 10.0.13.3, 01:15:17, FastEthernet0/1
D 10.0.24.0/24 [90/307200] via 10.0.12.2, 00:43:44, FastEthernet0/0
D 10.0.34.0/24 [90/307200] via 10.0.13.3, 00:43:44, FastEthernet0/1
r2#show ip route eigrp
10.0.0.0/8 is variably subnetted, 9 subnets, 2 masks
D 10.0.10.1/32 [90/409600] via 10.0.12.1, 00:46:20, FastEthernet0/0
D 10.0.13.0/24 [90/307200] via 10.0.12.1, 00:26:53, FastEthernet0/0
D 10.3.3.3/32 [90/435200] via 10.0.24.4, 00:26:53, FastEthernet0/1
[90/435200] via 10.0.12.1, 00:26:53, FastEthernet0/0
D 10.1.1.1/32 [90/409600] via 10.0.12.1, 01:18:16, FastEthernet0/0
D 10.0.34.0/24 [90/307200] via 10.0.24.4, 00:48:05, FastEthernet0/1
D 10.0.100.1/32 [90/409600] via 10.0.12.1, 00:46:14, FastEthernet0/0
r4#show ip route eigrp
10.0.0.0/8 is variably subnetted, 9 subnets, 2 masks
D 10.0.10.1/32 [90/435200] via 10.0.34.3, 00:30:33, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:30:33, FastEthernet0/1
D 10.0.12.0/24 [90/307200] via 10.0.24.2, 00:30:33, FastEthernet0/1
D 10.0.13.0/24 [90/307200] via 10.0.34.3, 00:30:33, FastEthernet0/0
D 10.2.2.2/32 [90/409600] via 10.0.24.2, 00:51:45, FastEthernet0/1
D 10.3.3.3/32 [90/409600] via 10.0.34.3, 00:30:33, FastEthernet0/0
D 10.0.100.1/32 [90/435200] via 10.0.34.3, 00:30:33, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:30:33, FastEthernet0/1
EIGRP
фильтрация
с
картой
маршрутов
(Filtering with Route-Map)
В данном примере мы перераспределяем в EIGRP два адреса, которым присваиваем им соответствующие метки, в дальнейшем по меткам их можно будет перераспределять.
r1(config)#route-map conn_eigrp permit 10
r1(config-route-map)#match interface loopback10
r1(config-route-map)#set tag 10
r1(config-route-map)#route-map conn_eigrp permit 20
r1(config-route-map)#match interface loopback100
r1(config-route-map)#set tag 100
r1(config-route-map)#exit
r1(config)#router eigrp 1
r1(config-router)#redistribute connected route-map conn_eigrp
Первая команда показывает, что данные маршруты пришли как внешние, две другие присвоенные метки. Проверка осуществляется командами:
r4#show ip route eigrp
10.0.0.0/8 is variably subnetted, 10 subnets, 2 masks
D EX 10.0.10.1/32 [170/435200] via 10.0.34.3, 00:00:30,FastEthernet0/0
[170/435200] via 10.0.24.2, 00:00:30, FastEthernet0/1
D 10.0.12.0/24 [90/307200] via 10.0.24.2, 01:11:03, FastEthernet0/1
D 10.0.13.0/24 [90/307200] via 10.0.34.3, 01:11:03, FastEthernet0/0
D 10.2.2.2/32 [90/409600] via 10.0.24.2, 01:32:15, FastEthernet0/1
D 10.3.3.3/32 [90/409600] via 10.0.34.3, 01:11:03, FastEthernet0/0
D 10.1.1.1/32 [90/435200] via 10.0.34.3, 00:19:50, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:19:50, FastEthernet0/1
D EX 10.0.100.1/32 [170/435200] via 10.0.34.3,00:00:30,FastEthernet0/0
[170/435200] via 10.0.24.2, 00:00:30, FastEthernet0/1
r4#show ip route 10.0.10.1
Routing entry for 10.0.10.1/32
Known via "eigrp 1", distance 170, metric 435200
Tag 10, type external
Redistributing via eigrp 1
Last update from 10.0.24.2 on FastEthernet0/1, 00:02:09 ago
Routing Descriptor Blocks:
* 10.0.34.3, from 10.0.34.3, 00:02:09 ago, via FastEthernet0/0
Route metric is 435200, traffic share count is 1
Total delay is 7000 microseconds, minimum bandwidth is 10000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 2
Route tag 10
10.0.24.2, from 10.0.24.2, 00:02:09 ago, via FastEthernet0/1
Route metric is 435200, traffic share count is 1
Total delay is 7000 microseconds, minimum bandwidth is 10000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 2
Route tag 10
r4#show ip route 10.0.100.1
Routing entry for 10.0.100.1/32
Known via "eigrp 1", distance 170, metric 435200
Tag 100, type external
Redistributing via eigrp 1
Last update from 10.0.24.2 on FastEthernet0/1, 00:02:41 ago
Routing Descriptor Blocks:
* 10.0.34.3, from 10.0.34.3, 00:02:41 ago, via FastEthernet0/0
Route metric is 435200, traffic share count is 1
Total delay is 7000 microseconds, minimum bandwidth is 10000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 2
Route tag 100
10.0.24.2, from 10.0.24.2, 00:02:41 ago, via FastEthernet0/1
Route metric is 435200, traffic share count is 1
Total delay is 7000 microseconds, minimum bandwidth is 10000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 2
Route tag 100
EIGRP
фильтрация
по
административной
дистанции
(Filtering with Administrative Distance)
В данном примере мы устанавливаем для адреса 10.1.1.1 максимальную административную дистанцию и делаем его не достижимым.
r4#show ip route eigrp
10.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
D 10.0.12.0/24 [90/307200] via 10.0.24.2, 01:19:12, FastEthernet0/1
D 10.0.13.0/24 [90/307200] via 10.0.34.3, 01:19:12, FastEthernet0/0
D 10.2.2.2/32 [90/409600] via 10.0.24.2, 01:40:23, FastEthernet0/1
D 10.3.3.3/32 [90/409600] via 10.0.34.3, 01:19:12, FastEthernet0/0
D 10.1.1.1/32 [90/435200] via 10.0.34.3, 00:27:58, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:27:58, FastEthernet0/1
r4(config)#access-list 2 permit 10.1.1.1
r4(config-router)#distance 255 0.0.0.0 255.255.255.255 2
Проверка осуществляется командами:
r4#show ip route eigrp
10.0.0.0/8 is variably subnetted, 7 subnets, 2 masks
D 10.0.12.0/24 [90/307200] via 10.0.24.2, 00:00:12, FastEthernet0/1
D 10.0.13.0/24 [90/307200] via 10.0.34.3, 00:00:12, FastEthernet0/0
D 10.2.2.2/32 [90/409600] via 10.0.24.2, 00:00:12, FastEthernet0/1
D 10.3.3.3/32 [90/409600] via 10.0.34.3, 00:00:12, FastEthernet0/0
r4#show ip route 10.1.1.1
% Subnet not in table
EIGRP
фильтрация
с
командой
пассивный
интерфейс
(Filtering with Passive-Interface)
Данный пример рассматривался ранее, данная команда полностью отключает EIGRP на интерфейсах.
r1(config)#router eigrp 1
r1(config-router)#passive-interface default
r1(config-router)#no passive-interface FastEthernet 0/0
r1(config-router)#no passive-interface Loopback 0
r1(config-router)#no auto-summary
r1(config-router)#end
r1#wr
EIGRP
фильтрация
с
офсет
листом
(Filtering with Offset-List)
В EIGRP при помощи офсет листа можно изменить метрику, данные действия показаны ниже:
r4#sh ip route 10.3.3.3
Routing entry for 10.3.3.3/32
Known via "eigrp 1", distance 90, metric 409600, type internal
Redistributing via eigrp 1
Last update from 10.0.34.3 on FastEthernet0/0, 00:00:41 ago
Routing Descriptor Blocks:
* 10.0.34.3, from 10.0.34.3, 00:00:41 ago, via FastEthernet0/0
Route metric is 409600, traffic share count is 1
Total delay is 6000 microseconds, minimum bandwidth is 10000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
r3(config)#access-list 1 permit 10.3.3.3
r3(config)#router eigrp 1
r3(config-router)#offset-list 1 out 2147483647
r4#sh ip route 10.3.3.3
Routing entry for 10.3.3.3/32
Known via "eigrp 1", distance 90, metric 2147893247, type internal
Redistributing via eigrp 1
Last update from 10.0.34.3 on FastEthernet0/0, 00:00:05 ago
Routing Descriptor Blocks:
* 10.0.34.3, from 10.0.34.3, 00:00:05 ago, via FastEthernet0/0
Route metric is 2147893247, traffic share count is 1
Total delay is 83892079 microseconds, minimum bandwidth is 10000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
EIGRP фильтрация с закрытой областью (Filtering with Stub Routing)
Если маршрутизатор указан как Stub, то соседи не посылают ему запросы о маршрутах.
r1(config)#route-map conn permit 10
r1(config-route-map)#match interface loopback10 loopback100
r1(config-route-map)#router eigrp 1
r1(config-router)#redistribute connected route-map conn
r1(config-router)#eigrp stub connected summary
Проверка осуществляется командами:
r4#show ip route eigrp | include EX
D EX 10.0.10.1/32 [170/435200] via 10.0.34.3, 00:39:29,FastEthernet0/0
D EX 10.0.100.1/32 [170/435200] via 10.0.34.3,00:39:29,FastEthernet0/0
r2#show ip eigrp neighbors detail
IP-EIGRP neighbors for process 1
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
0 10.0.12.1 Fa0/0 14 00:44:27 97 582 0 146
Version 12.4/1.2, Retrans: 0, Retries: 0, Prefixes: 4
Stub Peer Advertising ( CONNECTED SUMMARY ) Routes
Suppressing queries
1 10.0.24.4 Fa0/1 11 19:45:37 86 516 0 197
Version 12.4/1.2, Retrans: 6, Retries: 0, Prefixes: 4
EIGRP
фильтрация
с
закрытой
областью
c leak
картой
(Filtering with Stub Routing and Leak Map)
Не рекламирует маршрут 10.0.10.0/24
r1(config)#router eigrp 1
r1(config-router)#network 10.0.10.0 0.0.0.0
r1(config)#ip prefix-list lo10 seq 5 permit 10.0.10.0/24
r1(config)#route-map stub_leak_map deny 10
r1(config-route-map)#match ip address prefix-list lo10
r1(config-route-map)#route-map stub_leak_map permit 20
r1(config-route-map)#router eigrp 1
r1(config-router)#eigrp stub connected leak-map stub_leak_map
Проверка осуществляется командами:
r2#show ip eigrp neighbors detail
IP-EIGRP neighbors for process 1
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num 0 10.0.12.1 Fa0/0 14 00:00:19 95 570 0 183
Version 12.4/1.2, Retrans: 0, Retries: 0, Prefixes: 4
Stub Peer Advertising ( CONNECTED ) Routes
Suppressing queries
r4#sh ip route eigrp
10.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
D 10.0.12.0/24 [90/307200] via 10.0.24.2, 00:02:44, FastEthernet0/1
D 10.0.13.0/24 [90/307200] via 10.0.34.3, 00:02:44, FastEthernet0/0
D 10.2.2.2/32 [90/409600] via 10.0.24.2, 01:39:31, FastEthernet0/1
D 10.3.3.3/32 [90/2147893247] via 10.0.34.3, 01:39:31,FastEthernet0/0
D 10.1.1.1/32 [90/435200] via 10.0.34.3, 00:02:44, FastEthernet0/0
[90/435200] via 10.0.24.2, 00:02:44, FastEthernet0/1
EIGRP уникальная балансировка с не равной стоимостью (Unequal Cost Load Balancing)
EIGRP позволяет балансировать нагрузку к определённой сети, загружать оба доступных пути.
В последующих примерах используется приведённая ниже схема.
r1#sh ip route eigrp
10.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
D 10.2.2.2/32 [90/2357760] via 10.0.13.3, 00:00:32, Serial0/1
D 10.3.3.3/32 [90/2306560] via 10.0.13.3, 00:00:31, Serial0/1
D 10.4.4.4/32 [90/2332160] via 10.0.13.3, 00:00:32, Serial0/1
D 10.0.24.0/24 [90/2229760] via 10.0.13.3, 00:00:32, Serial0/1
D 10.0.34.0/24 [90/2204160] via 10.0.13.3, 00:00:33, Serial0/1
В данном примере, мы устанавливаем на интерфейсах разную пропускную способность.
r1(config)# interface Serial0/0
r1(config-if)# bandwidth 256
r1(config-if)# interface Serial0/1
r1(config-if)# bandwidth 1280
r1#show ip eigrp topology 10.4.4.4 255.255.255.255
IP-EIGRP (AS 1): Topology entry for 10.4.4.4/32
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 2665472
Routing Descriptor Blocks:
10.0.13.3 (Serial0/1), from 10.0.13.3, Send flag is 0x0
Composite metric is (2665472/409600), Route is Internal
Vector metric:
Minimum bandwidth is 1280 Kbit
Total delay is 26000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 2
10.0.12.2 (Serial0/0), from 10.0.12.2, Send flag is 0x0
Composite metric is (10665472/409600), Route is Internal
Vector metric:
Minimum bandwidth is 256 Kbit
Total delay is 26000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 2
После этого используем указанную команду и получаем результат, показанный ниже.
r1(config-if)#router eigrp 1
r1(config-router)# variance 5
r1(config-router)#do clear ip eigrp neighbor
r1(config-router)#do show ip route 10.4.4.4
Routing entry for 10.4.4.4/32
Known via "eigrp 1", distance 90, metric 2665472, type internal
Redistributing via eigrp 1
Last update from 10.0.12.2 on Serial0/0, 00:00:03 ago
Routing Descriptor Blocks:
* 10.0.13.3, from 10.0.13.3, 00:00:03 ago, via Serial0/1
Route metric is 2665472, traffic share count is 4
Total delay is 26000 microseconds, minimum bandwidth is 1280 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 2
10.0.12.2, from 10.0.12.2, 00:00:03 ago, via Serial0/0
Route metric is 10665472, traffic share count is 1
Total delay is 26000 microseconds, minimum bandwidth is 256 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 2
EIGRP Traffic Engineering with Metric
r1#sh ip route eigrp
10.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
D 10.2.2.2/32 [90/2691072] via 10.0.13.3, 00:00:03, Serial0/1
D 10.3.3.3/32 [90/2639872] via 10.0.13.3, 00:00:03, Serial0/1
D 10.4.4.4/32 [90/2665472] via 10.0.13.3, 00:00:03, Serial0/1
D 10.0.24.0/24 [90/2563072] via 10.0.13.3, 00:00:03, Serial0/1
D 10.0.34.0/24 [90/2537472] via 10.0.13.3, 00:00:03, Serial0/1
r3(config)#interface FastEthernet 0/1
r3(config-if)#delay 100000
r1#show ip route eigrp
10.0.0.0/8 is variably subnetted, 8 subnets, 2 masks
D 10.2.2.2/32 [90/10639872] via 10.0.12.2, 00:00:11, Serial0/0
D 10.3.3.3/32 [90/2639872] via 10.0.13.3, 00:02:10, Serial0/1
D 10.4.4.4/32 [90/10665472] via 10.0.12.2, 00:00:11, Serial0/0
D 10.0.24.0/24 [90/10537472] via 10.0.12.2, 00:00:11, Serial0/0
D 10.0.34.0/24 [90/10563072] via 10.0.12.2, 00:00:22, Serial0/0
EIGRP изменение полосы пропускания
По умолчанию протокол EIGRP использует 50% доступной полосы пропускания, это значение можно изменить командой показанной ниже, мы устанавливаем данное значение в 20%.
r1(config)#interface FastEthernet0/0
r1(config-if)#ip bandwidth-percent eigrp 1 20
EIGRP индикация маршрутизатора (Router ID)
Командой показанной ниже, можно присвоить маршрутизатору определенный адрес, при чем этот адрес может быть любым, но уникальным.
r4(config)#router eigrp 1
r4(config-router)#eigrp router-id 10.4.4.4
EIGRP
коммутация
узел
–
узел
(Unicast Communication)
Включаем команду отладки, видим что передача идет на адрес 224.0.0.10 который является адресом широковещательной рассылки для данного протокола.
r4#debug ip packet detail
IP packet debugging is on (detailed)
*Mar 1 20:55:52.214: IP: s=10.0.34.4 (local), d=224.0.0.10 (FastEthernet0/0), len 60, sending broad/multicast, proto=88
*Mar 1 20:55:53.050: IP: s=10.0.34.3 (FastEthernet0/0), d=224.0.0.10, len 60, rcvd 2, proto=88
*Mar 1 20:55:54.098: IP: s=10.0.24.2 (FastEthernet0/1), d=224.0.0.10, len 60, rcvd 2, proto=88