Answer / jitendera sinha

ok here i am trying for intervlan routing

what is vlan
vlan is virtual lan which is used for break the single broadcast domain of the switch.some we also say that it is used for security across the lan.

ok how we create it

switch#vlan database
swirch(vlan)#vlan 2 name sales
#vlan 3 name hr
ok by this way you can assiagin vlan to the switch
now assighn interface to the particula vlan
sitch#config t
switch(config)# interface fa0/1
#switchport access vlan 2
#switchport mode access
#exit
#interface fa0/2
#switchport access vlan 3
#switchport mode access
#exit
similay u can assign range of interface for particular vlan
comand is
switch(config)#interface range fa0/4 -48(for phycial router)
or
witch(config)#interface range fa0/4 -fa0/48 (for boson or any other)
sitch(config)#switchport access vlan xx
switchport mode acess

after doing this you have to assighn ip for the particular vlan
switch(configt)#interface vlan 2
#ip address <ip address> <netmask>
simlary for vlan 3

note< you should not configure vlan 1 becoz it is default one>
now you have also assign default gateway address to switch
switch(config)#default-gateway <ip address>
ok
now from here you are not able to ping vlan 2 from vlan 3 and vise versa
note since vlan is virtual lan they you should assign same class of ip address with same mask and with same default gate way
if you assign 10.10.10.0 /24
then you should assigns this ip for ip address not 10.11.10.0 or 11.11.11.0 only 10.10.10.0/24 remember
many of the student done mistake and nikhil is master in that(kiding soory)
ok
now your requirement is that ok a vlan should access some particular service from network but some are deny for that
so we introduced a router with fast Ethernet to that network
this process is called interfvaln routing

how it will be done i will say u in eving with example becoz i am in office till then paractc for vlan creation

Write an access list line which will deny node 20.0.2.1 to anywhere on your network using DNS via UDP. Don't worry about the other access list lines.

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