Subnetting
Clase
s
Ranges
1-126
128191
192223
224239
240255
B
C
D
E
GID
R
/8
Range 0: reserved
127: Loopback
ipv4
/16
/24
Na
Na
Class prvate (no routing to internet)
Clase
s
Ranges
10.0.0.0
B
C
10.255.255.2
55
172.31.255.2
55
192.168.255.
255
172.16.0.
0
192.168.
0.0
/12
/16
128
64 32 16
2 1
Subnet /28
15
16
_ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ . _ _ _
_ 0 0 0 0
Network
ID
X.X.X.
16
X.X.X.
32
X.X.X.
48
Rang
e
17-30
Broadcast
33-46
X . X . X . 31
(16+15)
X . X . X . 47
49-62
X . X . X . 63
100 hosts
8+8+
_ _ _
8 +
Hosts
X.X. _ _ _ _ _ _ _ _ . _ _ _ _ _
2
0
4
8
1
0
2
4
5
1
2
2
5
6
1
2
8
6
4
3
2
1
6
-2 = 126
hosts
Subnet /25
300 subnet
Subne
X.X. _ _ _ _ _ _ _ _ . _ _ _ _ _
_ _ _
1
6
8+8+
3
2
6
4
1
2
8
2
5
6
5
1
2
Subnet /25
192.168.100.97 /27 Broadcast range
128 64
4
2 1
31
Subnet /
27
32 16
X.X.X . _ _ _ _ _ _ _
Network
ID
X.X.X.
32
X.X.X.
64
X.X.
X . 96
Range
Broadcast
33-62
X . X . X . 63 (32+31)
65-94
X . X . X . 95
97-126
X . X . X . 127
(96+31)
/12 Class B
128 64 32
15
.0
Subnet /
12
16
X._ _ _ _
2 1
_ _ _ _ .0
172.16.0.0 ---------- >
172.31.255.255
Mask 255.555.254.0
2 1
Hosts
X. X._ _ _ _
.0
1
6
3
2
6
4
128
Subnet
Network
ID
X.X.0.
0
X.X.2.
0
1
2
8
_ _ _ _
5
1
2
-2 = 510 hosts /
subnet
Range
Broadcast
0.1
1.254
2.1
3.254
X.X.1.
255
X . X . 3. 255
Table
Octet
Bit
1000
0000
1100
0000
1110
0000
1111
0000
1111
1000
1111
1100
1111
1110
1111
1111
Decim
al
128
192
224
240
248
252
254
255
Configuracin - Comandos
R1#SH RUN
R1#SH IP INT BRIEF
SH PROTOCOLS
SH FLASH
SH VERSION
SH INT S0/0/0
SH IP INT S0/0/0
SH ?
SH CDP NEIGHBOURS
/28
255
255
255
_____ . _____ . _____ . _____
240
/20
_____ . _____ . _____ . _____
255
/12
255
240
0
_____ . _____ . _____ . _____
255
0
240
SH CDP NEIGHBOURS DETAIL
CDP RUN
NO CDP RUN
(INT)# NO CDP ENABLE
Configuracin - Router
ENABLE
CONFIG T
HOSTNAME R2
ENABLE PASSWORD CISCO
ENABLE SECRET STUDENT
SERVICE PASSWORD-ENCRYPTION
USERNAME LDIAZ PRIVILEGE 15 PASSWORD
0 CISCO
BANNER MOTD $ WELCOME TO R2 $
IP DOMAIN-NAME CISCO.COM
IP NAME-SERVER 192.168.1.2
CRYPTO KEY GENERATE RSA
512
LINE CON 0
PASSWORD CISCO
LOGIN LOCAL
EXEC-TIMEOUT 0 0
LOGGING SYNCHRONOUS
LINE VTY 0 15
PASSWORD CISCO
LOGIN LOCAL
EXEC-TIMEOUT 0 0
LOGGING SYNCHRONOUS
TRANSPORT INPUT ALL
EXIT
INT F0/0
IP ADDRESS 192.168.2.254 255.255.255.0
DESCRIPTION CONNECTION TO LAN
NO SHUT
INT S0/0/1
IP ADDRESS 10.1.1.6 255.255.255.252
DESCRIPTION CONNECTION TO R1
NO SHUT
EXIT
EXIT
COPY RUN START
Configuracin IP route AS1
-DC0
# configure terminal
()# ip route 0.0.0.0 0.0.0.0 s0/0/0
()# ip route 192.168.1.0 255.255.255.0
s0/0/1 150
4
()# exit
# copy run start
# show ip route
Configuracin RIP AS120
# show start
# configure terminal
()# router rip
()# version 2
()# net 10.0.0.0
()# net 192.168.1.0
()#no auto-summary
()# exit
# copy run start
# show ip route
Configuracin EIGRP A
# show ip eigrp topology
# configure terminal
()# router eigrp 300
()# net 10.0.0.0
()# net 192.168.1.0
()#no auto-summary
()# exit
# copy run start
# show ip route
Configuracin OSPF AS110
# configure terminal
()# router ospf 1
()# net 192.168.1.0 0.0.0.255 area 0
()# net 10.1.1.4 0.0.0.3 area 0
()# net 192.168.1.0 0.0.0.255 area 0
()# exit
# copy run start
# show ip route
# show ip ospf int s0/1/0
Ip ospf priority 255
Clear ip ospf process
Show running-config
Show protocols
Configuracin SW
>enable
5
# show mac-address-table
# show vlan
>enable
# configure terminal
# hostname sw1
# enable password cisco
# enable secret student
# service password-encryption
# banner motd $ sw1 $
# username ldiaz privilege 15 password
cisco
# ip domain-lookup
# ip domain-name cisco
# ip name server 192.168.100.100
# line vty 0 15
# password cisco
Login local
Login synchronous
Exec-timeout 0 0
Transport input all
Line con 0
Password cisco
Login local
Login synchronous
Exec-timeout 0 0
Exit
Exit
# copy run start
# show start
Configuracin SW VLAN
# vlan 1
Ip address 192.168.100.253
255.255.255.0
no shut
exit
# ip default-gateway 192.168.100.254
# copy run start
>enable
# configure terminal
# hostname sw1
# vlan 100
Name faculty
#vlan 101
Name students
Exit
6
Exit
# show vlan
# configure terminal
# Int f0/3
Switchport mode Access
Switchport Access vlan 100
# Int f0/4
Switchport mode Access
Switchport Access vlan 101
Exit
Exit
# copy run start
# configure terminal
# int range f0/1-2
Switchport mode trunk
Exit
# copy run start
# sh int trunk
Configuracin SW VLAN STP
>enable
# show spanning-tree
# show cdp neighbours
#
#
#
#
Spanning Tree protocol
Maniplate election process
# configure terminal
# spanning-tree vlan 1,10,20 priority 0
configure terminal
int range f0/3-10
spanning-tree portfast
spanning-tree bdpuguard enable
# int f0/10
No shutdown
Configuracin SW VTP
>enable
# show vtp stat
Virtual trunking Protocol
Configuracin Port security
# show port security
Virtual trunking Protocol
#int range
Switchport
Switchport
Switchport
Switchport
shutdown
f0/1-15
port-security
port-security
port-security
port-security
Configuracin Intervlan
7
mac
sticky
max 2
violation
# show int trunk
R(config)# int f0/0
No shut
Int f0/0.10
Encap dot1q 10
Ip address 192.168.10.254
255.255.255.0
Int f0/0.20
Encap dot1q 20
Ip address 192.168.20.254
255.255.255.0
#sh ip int brief
#sh ip route
Configuracin ACL
>enable
# configure terminal
# access-list 100 permit tcp host 192.168.33.3 host
172.22.242.23 eq 80
# access-list 100 deny tcp any host 172.22.242.23 eq 80
# Access-list 100 permit ip any any
# show ip interface brief
#interface fa0/1
#ip Access-group 100 out
#end
# copy running-config startup-config
Configuracin NAT
>enable
# configure terminal
# hostname weaver
# ip nat pool my_pool 198.18.184.105 198.18.184.110
netmask 255.255.255.248
# Access-list 1 permit 192.168.100.16 0.0.0.15
#ip nat inside source list 1 pool my_pool overload
#interface fa0/0
#ip nat inside
Exit
#interface s0/0
#ip nat outside
8
End
# copy running-config startup-config
