3.6.1 Packet Tracer - Implement VLANs and Trunking Answers
Topology
Addressing Table
| Device | Interface | IP Address | Subnet Mask | Switchport | VLAN |
|---|---|---|---|---|---|
| PC1 | NIC | 192.168.10.10 | 255.255.255.0 | SWB F0/1 | VLAN 10 |
| PC2 | NIC | 192.168.20.20 | 255.255.255.0 | SWB F0/2 | VLAN 20 |
| PC3 | NIC | 192.168.30.30 | 255.255.255.0 | SWB F0/3 | VLAN 30 |
| PC4 | NIC | 192.168.10.11 | 255.255.255.0 | SWC F0/1 | VLAN 10 |
| PC5 | NIC | 192.168.20.21 | 255.255.255.0 | SWC F0/2 | VLAN 20 |
| PC6 | NIC | 192.168.30.31 | 255.255.255.0 | SWC F0/3 | VLAN 30 |
| PC7 | NIC | 192.168.10.12 | 255.255.255.0 | SWC F0/4 | VLAN 10 VLAN 40 (Voice) |
| SWA | SVI | 192.168.99.252 | 255.255.255.0 | N/A | VLAN 99 |
| SWB | SVI | 192.168.99.253 | 255.255.255.0 | N/A | VLAN 99 |
| SWC | SVI | 192.168.99.254 | 255.255.255.0 | N/A | VLAN 99 |
Objectives
- Part 1: Configure VLANs
- Part 2: Assign Ports to VLANs
- Part 3: Configure Static Trunking
- Part 4: Configure Dynamic Trunking
Background
You are working in a company that is getting ready to deploy a set of new 2960 switches in a branch office.
You are working in the lab to test out the VLAN and trunking configurations that are planned. Configure and test the VLANs and trunks.
Instructions
Part 1: Configure VLANs
Configure VLANs on all three switches. Refer to the VLAN Table. Note that the VLAN names must match the values in the table exactly.
VLAN Table
| VLAN Number | VLAN Name |
|---|---|
| 10 | Admin |
| 20 | Accounts |
| 30 | HR |
| 40 | Voice |
| 99 | Management |
| 100 | Native |
SWA(config)# vlan 10 SWA(config-vlan)# name Admin SWA(config-vlan)# vlan 20 SWA(config-vlan)# name Accounts SWA(config-vlan)# vlan 30 SWA(config-vlan)# name HR SWA(config-vlan)# vlan 40 SWA(config-vlan)# name Voice SWA(config-vlan)# vlan 99 SWA(config-vlan)# name Management SWA(config-vlan)# vlan 100 SWA(config-vlan)# name Native
SWB(config)# vlan 10 SWB(config-vlan)# name Admin SWB(config-vlan)# vlan 20 SWB(config-vlan)# name Accounts SWB(config-vlan)# vlan 30 SWB(config-vlan)# name HR SWB(config-vlan)# vlan 40 SWB(config-vlan)# name Voice SWB(config-vlan)# vlan 99 SWB(config-vlan)# name Management SWB(config-vlan)# vlan 100 SWB(config-vlan)# name Native
SWC(config)# vlan 10 SWC(config-vlan)# name Admin SWC(config-vlan)# vlan 20 SWC(config-vlan)# name Accounts SWC(config-vlan)# vlan 30 SWC(config-vlan)# name HR SWC(config-vlan)# vlan 40 SWC(config-vlan)# name Voice SWC(config-vlan)# vlan 99 SWC(config-vlan)# name Management SWC(config-vlan)# vlan 100 SWC(config-vlan)# name Native
Part 2: Assign Ports to VLANs
Step 1: Assign access ports to VLANs
On SWB and SWC, assign ports to the VLANs. Refer to the Addressing Table.
SWB(config)# interface fastethernet 0/1 SWB(config-if)# switchport mode access SWB(config-if)# switchport access vlan 10 SWB(config-if)# interface fastethernet 0/2 SWB(config-if)# switchport mode access SWB(config-if)# switchport access vlan 20 SWB(config-if)# interface fastethernet 0/3 SWB(config-if)# switchport mode access SWB(config-if)# switchport access vlan 30
SWC(config)# interface fastethernet 0/1 SWC(config-if)# switchport mode access SWC(config-if)# switchport access vlan 10 SWC(config-if)# interface fastethernet 0/2 SWC(config-if)# switchport mode access SWC(config-if)# switchport access vlan 20 SWC(config-if)# interface fastethernet 0/3 SWC(config-if)# switchport mode access SWC(config-if)# switchport access vlan 30 SWC(config-if)# interface fastethernet 0/4 SWC(config-if)# switchport mode access SWC(config-if)# switchport access vlan 10
Step 2: Configure the Voice VLAN port
Configure the appropriate port on switch SWC for voice VLAN functionality.
SWC(config)# interface fastethernet 0/4 SWC(config-if)# mls qos trust cos SWC(config-if)# switchport voice vlan 40
Step 3: Configure the virtual management interfaces
a. Create the virtual management interfaces, on all three switches.
b. Address the virtual management interfaces according to the Addressing Table.
SWA(config)# interface vlan 99 SWA(config-if)# ip address 192.168.99.252 255.255.255.0 SWA(config-if)# no shutdown
SWB(config)# interface vlan 99 SWB(config-if)# ip address 192.168.99.253 255.255.255.0 SWB(config-if)# no shutdown
SWC(config)# interface vlan 99 SWC(config-if)# ip address 192.168.99.254 255.255.255.0 SWC(config-if)# no shutdown
c. The switches should not be able to ping each other.
SWA# ping 192.168.99.253
Part 3: Configure Static Trunking
a. Configure the link between SWA and SWB as a static trunk. Disable dynamic trunking on this port.
SWA(config)# interface gigabitethernet 0/1 SWA(config-if)# switchport mode trunk
SWB(config)# interface gigabitethernet 0/1 SWB(config-if)# switchport mode trunk
b. Disable DTP on the switch port on both ends of the trunk link.
SWA(config)# interface gigabitethernet 0/1 SWA(config-if)# switchport nonegotiate
SWB(config)# interface gigabitethernet 0/1 SWB(config-if)# switchport nonegotiate
c. Configure the trunk with the native VLAN and eliminate native VLAN conflicts if any.
SWA(config)# interface gigabitethernet 0/1 SWA(config-if)# switchport trunk native vlan 100
SWB(config)# interface gigabitethernet 0/1 SWB(config-if)# switchport trunk native vlan 100
Part 4: Configure Dynamic Trunking
a. Assume that the trunk port on SWC is set to the default DTP mode for 2960 switches. Configure G0/2 on SWA so that it successfully negotiates trunking with SWC.
SWA(config)# interface gigabitethernet 0/2 SWA(config-if)# switchport mode dynamic desirable
b. Configure the trunk with the native VLAN and eliminate native VLAN conflicts if any.
SWA(config)# interface gigabitethernet 0/2 SWA(config-if)# switchport trunk native vlan 100
SWC(config)# interface gigabitethernet 0/2 SWC(config-if)# switchport mode trunk SWC(config-if)# switchport trunk native vlan 100
Device Configs - Final
SWITCH SWA
! ============================================================== !--- 3.6.1 Packet Tracer - Implement VLANs and Trunking !--- ANSWER SCRIPT FOR SWITCH SWA !--- Usage: copy this whole file and paste it into the SWA terminal (start at the SWA> prompt). Every line beginning with "!" is a comment; IOS ignores it, so pasting a comment by accident is harmless. !--- SWA has no PCs: G0/1 is a static trunk to SWB, G0/2 a DTP trunk to SWC. ! ============================================================== enable configure terminal ! -------------------------------------------------------------- !--- Part 1: Configure VLANs. ! -------------------------------------------------------------- !--- Create the VLANs from the VLAN Table. Names must match exactly. vlan 10 name Admin exit vlan 20 name Accounts exit vlan 30 name HR exit vlan 40 name Voice exit vlan 99 name Management exit vlan 100 name Native exit ! -------------------------------------------------------------- !--- Part 2: Assign Ports to VLANs. ! -------------------------------------------------------------- !--- Step 3: management SVI on VLAN 99. interface vlan 99 ip address 192.168.99.252 255.255.255.0 no shutdown exit ! -------------------------------------------------------------- !--- Part 3: Configure Static Trunking. ! -------------------------------------------------------------- !--- a, b and c. G0/1 to SWB: static trunk, DTP disabled, native VLAN 100. interface gigabitethernet 0/1 switchport mode trunk switchport nonegotiate switchport trunk native vlan 100 exit ! -------------------------------------------------------------- !--- Part 4: Configure Dynamic Trunking. ! -------------------------------------------------------------- !--- a and b. G0/2 to SWC: dynamic desirable (negotiates with SWC's default dynamic auto), native VLAN 100. interface gigabitethernet 0/2 switchport mode dynamic desirable switchport trunk native vlan 100 exit end ! -------------------------------------------------------------- !--- Save the configuration to NVRAM. (Press Enter when prompted for the destination filename.) ! -------------------------------------------------------------- copy running-config startup-config ! ============================================================== !--- Verification: !--- show interfaces trunk -> Gig0/1 on and Gig0/2 desirable, both trunking with native VLAN 100 !--- ping 192.168.99.253 and ping 192.168.99.254 -> SWB and SWC reachable over the trunks ! ==============================================================
SWITCH SWB
! ============================================================== !--- 3.6.1 Packet Tracer - Implement VLANs and Trunking !--- ANSWER SCRIPT FOR SWITCH SWB !--- Usage: copy this whole file and paste it into the SWB terminal (start at the SWB> prompt). Every line beginning with "!" is a comment; IOS ignores it, so pasting a comment by accident is harmless. !--- PC1, PC2 and PC3 connect to F0/1 - F0/3; G0/1 is the static trunk to SWA. ! ============================================================== enable configure terminal ! -------------------------------------------------------------- !--- Part 1: Configure VLANs. ! -------------------------------------------------------------- !--- Create the VLANs from the VLAN Table. Names must match exactly. vlan 10 name Admin exit vlan 20 name Accounts exit vlan 30 name HR exit vlan 40 name Voice exit vlan 99 name Management exit vlan 100 name Native exit ! -------------------------------------------------------------- !--- Part 2: Assign Ports to VLANs. ! -------------------------------------------------------------- !--- Step 1: assign the access ports according to the Addressing Table. interface fastethernet 0/1 switchport mode access switchport access vlan 10 exit interface fastethernet 0/2 switchport mode access switchport access vlan 20 exit interface fastethernet 0/3 switchport mode access switchport access vlan 30 exit !--- Step 3: management SVI on VLAN 99. interface vlan 99 ip address 192.168.99.253 255.255.255.0 no shutdown exit ! -------------------------------------------------------------- !--- Part 3: Configure Static Trunking. ! -------------------------------------------------------------- !--- a, b and c. G0/1 to SWA: static trunk, DTP disabled, native VLAN 100 (matches SWA). interface gigabitethernet 0/1 switchport mode trunk switchport nonegotiate switchport trunk native vlan 100 exit end ! -------------------------------------------------------------- !--- Save the configuration to NVRAM. (Press Enter when prompted for the destination filename.) ! -------------------------------------------------------------- copy running-config startup-config ! ============================================================== !--- Verification: !--- show vlan brief -> Fa0/1 VLAN 10, Fa0/2 VLAN 20, Fa0/3 VLAN 30 !--- show interfaces trunk -> Gig0/1 on, trunking, native VLAN 100 ! ==============================================================
SWITCH SWC
! ============================================================== !--- 3.6.1 Packet Tracer - Implement VLANs and Trunking !--- ANSWER SCRIPT FOR SWITCH SWC !--- Usage: copy this whole file and paste it into the SWC terminal (start at the SWC> prompt). Every line beginning with "!" is a comment; IOS ignores it, so pasting a comment by accident is harmless. !--- PC4 - PC6 connect to F0/1 - F0/3; PC7 connects through an IP phone on F0/4; G0/2 is the trunk to SWA. ! ============================================================== enable configure terminal ! -------------------------------------------------------------- !--- Part 1: Configure VLANs. ! -------------------------------------------------------------- !--- Create the VLANs from the VLAN Table. Names must match exactly. vlan 10 name Admin exit vlan 20 name Accounts exit vlan 30 name HR exit vlan 40 name Voice exit vlan 99 name Management exit vlan 100 name Native exit ! -------------------------------------------------------------- !--- Part 2: Assign Ports to VLANs. ! -------------------------------------------------------------- !--- Step 1: assign the access ports according to the Addressing Table. interface fastethernet 0/1 switchport mode access switchport access vlan 10 exit interface fastethernet 0/2 switchport mode access switchport access vlan 20 exit interface fastethernet 0/3 switchport mode access switchport access vlan 30 exit interface fastethernet 0/4 switchport mode access switchport access vlan 10 exit !--- Step 2: voice VLAN 40 on F0/4 (IP phone) and trust the CoS values marked by the phone. interface fastethernet 0/4 mls qos trust cos switchport voice vlan 40 exit !--- Step 3: management SVI on VLAN 99. interface vlan 99 ip address 192.168.99.254 255.255.255.0 no shutdown exit ! -------------------------------------------------------------- !--- Part 4: Configure Dynamic Trunking. ! -------------------------------------------------------------- !--- b. G0/2 to SWA: native VLAN 100 to match SWA (trunk mode as in the lab answer key). interface gigabitethernet 0/2 switchport mode trunk switchport trunk native vlan 100 exit end ! -------------------------------------------------------------- !--- Save the configuration to NVRAM. (Press Enter when prompted for the destination filename.) ! -------------------------------------------------------------- copy running-config startup-config ! ============================================================== !--- Verification: !--- show vlan brief -> Fa0/1, Fa0/4 VLAN 10, Fa0/2 VLAN 20, Fa0/3 VLAN 30 !--- show interfaces fastethernet 0/4 switchport -> Access VLAN 10, Voice VLAN 40 !--- show interfaces trunk -> Gig0/2 trunking, native VLAN 100 !--- From PC1 ping PC4 (VLAN 10 across SWA) -> successful ! ==============================================================
