1.2.1 Packet Tracer - Inter-VLAN Routing Challenge (Answers)

! ==============================================================
!--- 1.2.1 Packet Tracer - Inter-VLAN Routing Challenge
!--- ANSWER SCRIPT FOR SWITCH S1
!--- Usage: copy this whole file and paste it into the S1 terminal (start at the S1> prompt). Every line beginning with "!" is a comment; IOS ignores it, so pasting a comment by accident is harmless.
! ==============================================================

enable
configure terminal

! --------------------------------------------------------------
!--- Part 1: Assign IP addressing to S1 and configure the default gateway.
! --------------------------------------------------------------

!--- Management SVI - VLAN 99.
interface vlan 99
 ip address 172.17.99.10 255.255.255.0
 no shutdown
 exit

!--- Default gateway so S1 itself can be managed/pinged from other VLANs.
ip default-gateway 172.17.99.1

! --------------------------------------------------------------
!--- Part 2: Create and name the VLANs. Names are CASE-SENSITIVE and must match exactly.
! --------------------------------------------------------------

!--- VLAN 10: Faculty/Staff
vlan 10
 name Faculty/Staff
 exit

!--- VLAN 20: Students
vlan 20
 name Students
 exit

!--- VLAN 30: Guest(Default)
vlan 30
 name Guest(Default)
 exit

!--- VLAN 88: Native
vlan 88
 name Native
 exit

!--- VLAN 99: Management
vlan 99
 name Management
 exit

! --------------------------------------------------------------
!--- Part 3: Assign the active ports on S1 to their VLANs (access mode).
! --------------------------------------------------------------

!--- F0/11-17 - VLAN 10 (Faculty/Staff).
interface range fastethernet 0/11 - 17
 switchport mode access
 switchport access vlan 10
 exit

!--- F0/18-24 - VLAN 20 (Students).
interface range fastethernet 0/18 - 24
 switchport mode access
 switchport access vlan 20
 exit

!--- F0/6-10 - VLAN 30 (Guest(Default)).
interface range fastethernet 0/6 - 10
 switchport mode access
 switchport access vlan 30
 exit

! --------------------------------------------------------------
!--- Part 4: Configure G0/1 as a static trunk and set the native VLAN.
! --------------------------------------------------------------

!--- G0/1 - trunk to R1, native VLAN 88 per the VLAN table.
interface gigabitethernet 0/1
 switchport mode trunk
 switchport trunk native vlan 88
 exit

! --------------------------------------------------------------
!--- Part 5: Disable every port that is not assigned to a VLAN.
! --------------------------------------------------------------

!--- F0/1-5 and G0/2 - unused ports (not in the VLAN table). Shut them down.
interface range fastethernet 0/1 - 5, gigabitethernet 0/2
 shutdown
 exit

end

! --------------------------------------------------------------
!--- Save the configuration to NVRAM. (Press Enter when prompted for the destination filename.)
! --------------------------------------------------------------
copy running-config startup-config


! ==============================================================
!--- Verification:
!---   show vlan brief          -> VLAN name, status and the ports assigned to each
!---   show interfaces trunk    -> confirms G0/1 is trunking with native VLAN 88
!---   show ip interface brief  -> confirms the VLAN 99 SVI is up/up
!---   ping 172.17.99.1         -> default gateway (R1 sub-interface G0/1.99)
!---   ping 172.17.10.21        -> PC1, reached through the default-gateway route
! ==============================================================

! ==============================================================
!--- 1.2.1 Packet Tracer - Inter-VLAN Routing Challenge
!--- ANSWER SCRIPT FOR ROUTER R1
!--- Usage: copy this whole file and paste it into the R1 terminal (start at the R1> prompt). Every line beginning with "!" is a comment; IOS ignores it, so pasting a comment by accident is harmless.
! ==============================================================

enable
configure terminal

! --------------------------------------------------------------
!--- Part 1: Bring up the physical interfaces and assign IP addressing
!--- to R1 based on the Addressing Table.
! --------------------------------------------------------------

!--- G0/0 - point-to-point uplink (/30). Listed in the Addressing Table
!--- but missing from the original answer key; added here.
interface gigabitethernet 0/0
 ip address 172.17.25.2 255.255.255.252
 no shutdown
 exit

!--- G0/1 - physical trunk link to S1. Must be up for every
!--- subinterface below to pass traffic.
interface gigabitethernet 0/1
 no shutdown
 exit

! --------------------------------------------------------------
!--- Part 2: Configure inter-VLAN routing (router-on-a-stick subinterfaces).
! --------------------------------------------------------------

!--- Subinterface for VLAN 10 (Faculty/Staff).
interface gigabitethernet 0/1.10
 encapsulation dot1Q 10
 ip address 172.17.10.1 255.255.255.0
 exit

!--- Subinterface for VLAN 20 (Students).
interface gigabitethernet 0/1.20
 encapsulation dot1Q 20
 ip address 172.17.20.1 255.255.255.0
 exit

!--- Subinterface for VLAN 30 (Guest(Default)).
interface gigabitethernet 0/1.30
 encapsulation dot1Q 30
 ip address 172.17.30.1 255.255.255.0
 exit

!--- Subinterface for VLAN 88 (Native) - must carry the "native" keyword
!--- so it matches S1's untagged native VLAN on the trunk.
interface gigabitethernet 0/1.88
 encapsulation dot1Q 88 native
 ip address 172.17.88.1 255.255.255.0
 exit

!--- Subinterface for VLAN 99 (Management).
interface gigabitethernet 0/1.99
 encapsulation dot1Q 99
 ip address 172.17.99.1 255.255.255.0
 exit

end

! --------------------------------------------------------------
!--- Save the configuration to NVRAM. (Press Enter when prompted for the destination filename.)
! --------------------------------------------------------------
copy running-config startup-config


! ==============================================================
!--- Verification:
!---   show ip interface brief  -> G0/0, G0/1 and all five subinterfaces up/up
!---   show interfaces trunk    -> run on S1; confirms VLANs 10/20/30/88/99 allowed
!---   ping 172.17.99.10        -> S1 management SVI
!---   ping 172.17.10.21 / 172.17.20.22 / 172.17.30.23  -> PC1 / PC2 / PC3
!--- Note: the Server (172.17.50.254/24) sits beyond G0/0. Reaching it also
!--- requires the device on the far side of that /30 link to have a return
!--- route to 172.17.10/20/30/88/99.0/24 - outside this file's scope.
! ==============================================================