See the explanation
Explanation/Reference:
Explanation:
1. Verification of Pre-configuration:
a. Check that the denoted vlan [vlan20] is created in both switches and ports [fa0/1 of ASW1] are assigned.
b. Take down the radius-server ip [172.120.39.46] and the key [rad123].
c. Take down the IP range [172.120.40.0/24] to be allowed the given vlan [vlan20] Configure the Port based authentication on ASW1: Enable AAA on the switch:
ASW1> enable
ASW1# conf t
ASW1(config)# aaa new-model
The new-model keyword refers to the use of method lists, by which authentication methods and sources can be grouped or organized. Define the server along with its secret shared password:
ASW1(config)# aaa authentication dot1x default group radius ASW1(config)# radius-server host
172.120.39.46 key rad123
This command causes the RADIUS server defined on the switch to be used for 802.1x authentication.
Enable 802.1x on the switch:
ASW1(config)# dot1x system-auth-control
Configure Fa0/1 to use 802.1x:
ASW1(config)# interface fastEthernet 0/1
ASW1(config-if)# switchport mode access
ASW1(config-if)# dot1x port-control auto
Notice that the word "auto" will force connected PC to authenticate through the 802.1x exchange.
ASW1(config-if)# exit
ASW1# copy running-config startup-config
Filter the traffic and create vlan access-map to restrict the traffic only for a range on DSW1 Define an access-list:
DSW1> enable
DSW1# conf t
DSW1(config)# ip access-list standard 10 (syntax: ip access-list {standard | extended} acl-name) DSW1(config-ext-nacl)# permit 172.120.40.0 0.0.0.255 DSW1(config-ext-nacl)# exit Define an access-map which uses the access-list above:
DSW1(config)# vlan access-map MYACCMAP 10 (syntax: vlan access-map map_name [0-65535] )
DSW1(config-access-map)# match ip address 10 (syntax: match ip address {acl_number | acl_name}) DSW1(config-access-map)# action forward
DSW1(config-access-map)# exit
DSW1(config)# vlan access-map MYACCMAP 20
DSW1(config-access-map)# action drop (drop other networks)
DSW1(config-access-map)# exit
Apply a vlan-map into a vlan:
DSW1(config)# vlan filter MYACCMAP vlan-list 20 (syntax: vlan filter mapname vlan-list list) DSW1# copy running-config startup-config
4. Note:
It is not possible to verify the configuration in this lab. All we have do the correct configurations. Most of the exam takers report that "copy running-config startup-config" is not working. It does not a matter. Do not try unwanted/wrong commands in the consoles. They are not real switches.