exemplu de retea

S se configureze echipamentele din figura de mai jos conform informaiilor prezentate.

Configurarea hostname-ului, consolei, liniilor telnet i interfeelor pe routerul R1:

Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname R1 R1(config)#line console 0 R1(config-line)#password cisco R1(config-line)#login R1(config-line)#exit R1(config)#line vty 0 4 R1(config-line)#password cisco R1(config-line)#login R1(config-line)#exit R1(config)#interface fa0/0 R1(config-if)#ip address 192.168.1.254 255.255.255.0 R1(config-if)#no shutdown R1(config-if)#exit R1(config)#interface fa1/0 R1(config-if)#ip address 192.168.10.126 255.255.255.128 R1(config-if)#no shutdown

R1(config-if)#exit R1(config)#interface se2/0 R1(config-if)#ip address 10.10.10.1 255.255.255.252 R1(config-if)#clock rate 64000 R1(config-if)#no shutdown %LINK-5-CHANGED: Interface Serial2/0, changed state to down R1(config-if)#exit

Configurarea serviciului DHCP pe routerul R1 pentru reeaua N2:

R1(config)#ip dhcp pool N2 R1(dhcp-config)#network 192.168.10.0 255.255.255.128 R1(dhcp-config)#default-router 192.168.10.126 R1(dhcp-config)#dns-server 192.168.1.20 R1(dhcp-config)#exit R1(config)#ip dhcp excluded-address 192.168.10.1 192.168.10.9 R1(config)#ip dhcp excluded-address 192.168.10.120 192.168.10.126

Configurarea hostname-ului, consolei, liniilor telnet i interfeelor pe routerul R2:

Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname R2 R2(config)#line console 0 R2(config-line)#password cisco R2(config-line)#login R2(config-line)#exit R2(config)#line vty 0 4 R2(config-line)#password cisco R2(config-line)#login R2(config-line)#exit R2(config)#interface fa0/0 R2(config-if)#ip address 11.1.1.206 255.255.255.240 R2(config-if)#no shutdown R2(config-if)#ip helper-address 192.168.1.10 R2(config-if)#exit R2(config)#interface fa1/0 R2(config-if)#ip address 11.1.1.214 255.255.255.248 R2(config-if)#no shutdown R2(config-if)#exit R2(config)#interface se2/0 R2(config-if)#ip address 10.10.10.2 255.255.255.252 R2(config-if)#no shutdown R2(config-if)#exit

Configurarea serviciului DHCP pe routerul R2 pentru reeaua N4:

R2(config)#ip dhcp pool N4 R2(dhcp-config)#network 11.1.1.208 255.255.255.248 R2(dhcp-config)#default-router 11.1.1.214 R2(dhcp-config)#dns-server 192.168.1.20 R2(dhcp-config)#exit R2(config)#ip dhcp excluded-address 11.1.1.209 R2(config)#ip dhcp excluded-address 11.1.1.214

Configurarea serviciului DHCP pe server

Observaie: Cmpul Maximum number of Users va fi completat automat odat cu apsarea butonului Add. Configurarea rutrii statice pe cele dou routere: Pe routerul R1 vor fi configurate dou rute ctre cele N3 i N4 care trec prin R2, iar R2 va avea doar o rut default ctre toate destinaiile posibile trecnd prin R1.

R1(config)#ip route 11.1.1.192 255.255.255.240 10.10.10.2 R1(config)#ip route 11.1.1.208 255.255.255.248 10.10.10.2 R2(config)#ip route 0.0.0.0 0.0.0.0 10.10.10.1

Tabela de rutare a lui R1:

R1#show 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, 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 10.10.10.0 is directly connected, Serial2/0 11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks S 11.1.1.192/28 [1/0] via 10.10.10.2 S 11.1.1.208/29 [1/0] via 10.10.10.2 C 192.168.1.0/24 is directly connected, FastEthernet0/0 192.168.10.0/25 is subnetted, 1 subnets C 192.168.10.0 is directly connected, FastEthernet1/0


R2#show 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, 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 10.10.10.1 to network 0.0.0.0 10.0.0.0/30 is subnetted, 1 subnets C 10.10.10.0 is directly connected, Serial2/0 11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks C 11.1.1.192/28 is directly connected, FastEthernet0/0 C 11.1.1.208/29 is directly connected, FastEthernet1/0 S* 0.0.0.0/0 [1/0] via 10.10.10.1

Configurarea rutarii dinamice folosind RIP v1 Se specific reelele cu care se nvecineaz fiecare router. Optional se poate dezactiva transmiterea pachetelor RIP pe interfeele unde nu exist routere vecine.

R1(config)#router rip R1(config-router)#network 192.168.1.0 R1(config-router)#network 192.168.10.0 R1(config-router)#network 10.10.10.0 R1(config-router)#passive-interface fa0/0 R1(config-router)#passive-interface fa1/0

R2(config)#router rip R2(config-router)#network 11.1.1.192 R2(config-router)#network 11.1.1.208 R2(config-router)#network 10.10.10.0 R2(config-router)#passive-interface fa0/0 R2(config-router)#passive-interface fa1/0


... Gateway of last resort is not set 10.0.0.0/30 is subnetted, 1 subnets C 10.10.10.0 is directly connected, Serial2/0 R 11.0.0.0/8 [120/1] via 10.10.10.2, 00:00:01, Serial2/0 C 192.168.1.0/24 is directly connected, FastEthernet0/0 192.168.10.0/25 is subnetted, 1 subnets C 192.168.10.0 is directly connected, FastEthernet1/0


... Gateway of last resort is not set 10.0.0.0/30 is subnetted, 1 subnets C 10.10.10.0 is directly connected, Serial2/0 11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks C 11.1.1.192/28 is directly connected, FastEthernet0/0 C 11.1.1.208/29 is directly connected, FastEthernet1/0 R 192.168.1.0/24 [120/1] via 10.10.10.1, 00:00:23, Serial2/0 R 192.168.10.0/24 [120/1] via 10.10.10.1, 00:00:23, Serial2/0

Configurarea rutarii dinamice folosind RIP v2

R1(config)#router rip R1(config-router)#version 2 R1(config-router)#no auto-summary R1(config-router)#network 192.168.1.0 R1(config-router)#network 192.168.10.0 R1(config-router)#network 10.10.10.0 R1(config-router)#passive-interface fa0/0 R1(config-router)#passive-interface fa1/0

R2(config)#router rip R2(config-router)#version 2 R2(config-router)#no auto-summary R2(config-router)#network 11.1.1.192 R2(config-router)#network 11.1.1.208 R2(config-router)#network 10.10.10.0 R2(config-router)#passive-interface fa0/0 R2(config-router)#passive-interface fa1/0


... Gateway of last resort is not set 10.0.0.0/30 is subnetted, 1 subnets C 10.10.10.0 is directly connected, Serial2/0 11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks R 11.1.1.192/28 [120/1] via 10.10.10.2, 00:00:14, Serial2/0

R 11.1.1.208/29 [120/1] via 10.10.10.2, 00:00:14, Serial2/0 C 192.168.1.0/24 is directly connected, FastEthernet0/0 192.168.10.0/25 is subnetted, 1 subnets C 192.168.10.0 is directly connected, FastEthernet1/0


... Gateway of last resort is not set 10.0.0.0/30 is subnetted, 1 subnets C 10.10.10.0 is directly connected, Serial2/0 11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks C 11.1.1.192/28 is directly connected, FastEthernet0/0 C 11.1.1.208/29 is directly connected, FastEthernet1/0 R 192.168.1.0/24 [120/1] via 10.10.10.1, 00:00:28, Serial2/0 192.168.10.0/25 is subnetted, 1 subnets R 192.168.10.0 [120/1] via 10.10.10.1, 00:00:28, Serial2/0

Configurarea rutarii dinamice folosind OSPF

R1(config)#router ospf 1 R1(config-router)#network 192.168.1.0 0.0.0.255 area 1 R1(config-router)#network 192.168.10.0 0.0.0.127 area 1 R1(config-router)#network 10.10.10.0 0.0.0.3 area 1 R1(config-router)#passive-interface fa0/0 R1(config-router)#passive-interface fa1/0 R2(config)#router ospf 1 R2(config-router)#network 11.1.1.192 0.0.0.15 area 1 R2(config-router)#network 11.1.1.208 0.0.0.7 area 1 R2(config-router)#network 10.10.10.0 0.0.0.3 area 1 R2(config-router)#passive-interface fa0/0 R2(config-router)#passive-interface fa1/0


... Gateway of last resort is not set 10.0.0.0/30 is subnetted, 1 subnets C 10.10.10.0 is directly connected, Serial2/0 11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks O 11.1.1.192/28 [110/65] via 10.10.10.2, 00:01:24, Serial2/0 O 11.1.1.208/29 [110/65] via 10.10.10.2, 00:01:24, Serial2/0 C 192.168.1.0/24 is directly connected, FastEthernet0/0 192.168.10.0/25 is subnetted, 1 subnets C 192.168.10.0 is directly connected, FastEthernet1/0


... Gateway of last resort is not set 10.0.0.0/30 is subnetted, 1 subnets

C 10.10.10.0 is directly connected, Serial2/0 11.0.0.0/8 is variably subnetted, 2 subnets, 2 masks C 11.1.1.192/28 is directly connected, FastEthernet0/0 C 11.1.1.208/29 is directly connected, FastEthernet1/0 O 192.168.1.0/24 [110/65] via 10.10.10.1, 00:00:11, Serial2/0 192.168.10.0/25 is subnetted, 1 subnets O 192.168.10.0 [110/65] via 10.10.10.1, 00:00:11, Serial2/0

Configurarea listelor de access (ACL) pe cele dou rutere: Cele patru restricii care apar n imagine pot fi realizate n felul urmtor: 1. o list de acces simpl, numrul 14, instalat pe direcia ieire a interfeei Fa0/1 a routerului R2

2. primele doua linii ale listei de acces extinse cu numrul 104, instalat pe interfaa Fa0/1 a routerului R2 pe directia intrare (prima linie permite accesul lui PC3 la reeaua N2, iar a doua impiedic accesul la oricare alt reea).

3. linia a treia din lista de acces 104 menionat anterior. 4. lista de acces extins, numrul 102, instalata pe interfaa Fa0/1 a routerului R1 pe direcia intrare.

R1(config)#access-list 102 deny ip 192.168.10.0 0.0.0.127 host 11.1.1.193 R1(config)#access-list 102 permit ip any any R1(config)#interface fa1/0 R1(config-if)#ip access-group 102 in R1(config-if)#exit R2(config)#access-list 14 deny host 11.1.1.193 R2(config)#access-list 14 permit any R2(config)#interface fa1/0 R2(config-if)#ip access-group 14 out R2(config-if)#exit R2(config)#access-list 104 permit ip host 11.1.1.209 192.168.10.0 0.0.0.127 R2(config)#access-list 104 deny ip host 11.1.1.209 any R2(config)#access-list 104 deny tcp 11.1.1.208 0.0.0.7 host 192.168.1.100 eq www R2(config)#access-list 104 permit ip any any R2(config)#interface fa1/0 R2(config-if)#ip access-group 104 in R2(config-if)#exit

Configurarea serviciului DNS pe server

Observaie: IP-urile pentru calculatoare i servere se configureaz n sectiunea IP Configuration din cadrul tab-ului Desktop corespunztoare fiecrui echipament.

exemplu de retea

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