Configure the correct IP address/subnet mask on each PC. Set the gateway address as the LAST USABLE address of the subnet.
Make three connections between R1 and SW1. Configure one interface on R1 for each VLAN. Make sure the IP addresses are the gateway address you configured on the PCs.
Configure SW1’s interfaces in the proper VLANs. Remember the interfaces that connect to R1! Name the VLANs (Engeering, HR, Sales)
Ping between the PCs to check connectivity. Send a broadcast ping from a PC (ping the subnet broadcast address), and see which PCs devices receive the broadcast (use Packet Tracer’s ‘Simulation Mode’)
PC Configuration (Step 1)
VLAN 10
The broadcast address of 10.0.0.0/26 is… (.(00)111111) = 63
Therefore, the last usable address (gateway address) is 10.0.0.62/26
Therefore, the last usable address (gateway address) is 10.0.0.190/26
PC5’s Configurations:
Default Gateway: 10.0.0.190
IPv4 Address: 10.0.0.129
Subnet Mask: 255.255.255.192
PC6’s Configurations:
Default Gateway: 10.0.0.190
IPv4 Address: 10.0.0.130
Subnet Mask: 255.255.255.192
Step 2
Make three connections between R1 and SW1. Configure one interface on R1 for each VLAN. Make sure the IP addresses are the gateway address you configured on the PCs.
Below are the three connections using a straight-through cable.
Configure one interface on R1 for each VLAN.
Each interface G0/0, G0/1, and G0/2 should match their respective VLAN gateways.
R1> R1>en R1>enable R1#conf t Enter configuration commands, one per line. End with CNTL/Z. R1(config)# R1(config)# R1(config)#int g0/0 R1(config-if)# R1(config-if)#ip address 10.0.0.62 255.255.255.192 R1(config-if)#no shutdown
R1(config-if)# %LINK-5-CHANGED: Interface GigabitEthernet0/0, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/0, changed state to up
R1(config-if)# %LINK-5-CHANGED: Interface GigabitEthernet0/2, changed state to up
%LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/2, changed state to up
R1(config-if)#do show ip int brief Interface IP-Address OK? Method Status Protocol GigabitEthernet0/0 10.0.0.62 YES manual up up GigabitEthernet0/1 10.0.0.126 YES manual up up GigabitEthernet0/2 10.0.0.190 YES manual up up Vlan1 unassigned YES unset administratively down down
Configure the Switch’s VLAN
VLAN 10
We can configure all three relevant interfaces for VLAN 10 as follows
1
SW1(config)#int range g0/1,f3/1,f4/1
Next, enter switchport. Cisco automatically does this, but it’s good to be explicit.
Remember, an “access port“ belongs to a SINGLE VLAN, whereas “trunkports” over more.
1
SW1(config-if-range)#switchport mode access
Now create the VLAN as follows:
1
SW1(config-if-range)#switchport access vlan 10
That’s it.
VLAN 20
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SW1>en SW1#conf t Enter configuration commands, one per line. End with CNTL/Z. SW1(config)#int range g1/1,f5/1,f6/1 SW1(config-if-range)#switchport mod SW1(config-if-range)#switchport mode acces SW1(config-if-range)#switchport mode access ? <cr> SW1(config-if-range)#switchport mode access SW1(config-if-range)#switchport access ? vlan Set VLAN when interface is in access mode SW1(config-if-range)#switchport access vlan 20 % Access VLAN does not exist. Creating vlan 20
VLAN 30
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SW1(config-if-range)# SW1(config-if-range)#int range g2/1,f8/1,f7/1 SW1(config-if-range)#switchport mode acc SW1(config-if-range)#switchport mode access SW1(config-if-range)#swit SW1(config-if-range)#switchport acce SW1(config-if-range)#switchport access vlan 30 % Access VLAN does not exist. Creating vlan 30
VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa9/1 10 VLAN0010 active Gig0/1, Fa3/1, Fa4/1 20 VLAN0020 active Gig1/1, Fa5/1, Fa6/1 30 VLAN0030 active Gig2/1, Fa7/1, Fa8/1 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active SW1(config-if-range)#vlan 10 SW1(config-vlan)#name ENGINEERING SW1(config-vlan)#vlan 20 SW1(config-vlan)#name HR SW1(config-vlan)#vlan 30 SW1(config-vlan)#name Sales SW1(config-vlan)#do show vlan brief
VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active Fa9/1 10 ENGINEERING active Gig0/1, Fa3/1, Fa4/1 20 HR active Gig1/1, Fa5/1, Fa6/1 30 Sales active Gig2/1, Fa7/1, Fa8/1 1002 fddi-default active 1003 token-ring-default active 1004 fddinet-default active 1005 trnet-default active SW1(config-vlan)#
Request timed out. Reply from 10.0.0.65: bytes=32 time<1ms TTL=127 Reply from 10.0.0.65: bytes=32 time<1ms TTL=127 Reply from 10.0.0.65: bytes=32 time<1ms TTL=127
Ping statistics for 10.0.0.65: Packets: Sent = 4, Received = 3, Lost = 1 (25% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\>ping 10.0.0.129
Pinging 10.0.0.129 with 32 bytes of data:
Request timed out. Reply from 10.0.0.129: bytes=32 time<1ms TTL=127 Reply from 10.0.0.129: bytes=32 time<1ms TTL=127 Reply from 10.0.0.129: bytes=32 time<1ms TTL=127
Ping statistics for 10.0.0.129: Packets: Sent = 4, Received = 3, Lost = 1 (25% loss), Approximate round trip times in milli-seconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms
The packet moves from PC 1 to SW1 to R1 back to SW1 (to their respective interfaces), and finally to their destination.
If we ping the broadcast address of VLAN 10, SW1 will receive the broadcast request and only send a request to R1 and PC2, so within its broadcast domain/LAN.
