8.2.4.12 Packet Tracer – Troubleshooting Enterprise Networks 1

8.2.4.12 Packet Tracer – Troubleshooting Enterprise Networks 1

Packet Tracer – Troubleshooting Enterprise Networks 1 (Answer Version)

Answer Note: Red font color or Gray highlights indicate text that appears in the Answer copy only.

Topology

Addressing Table

Device	Interface	IP Address	Subnet Mask	Default Gateway
R1	S0/0/0	10.1.1.1	255.255.255.252	N/A
	S0/0/1	10.3.3.1	255.255.255.252	N/A
R2	G0/0	192.168.40.1	255.255.255.0	N/A
	G0/1	DHCP assigned	DHCP assigned	N/A
	S0/0/0	10.1.1.2	255.255.255.252	N/A
	S0/0/1	10.2.2.1	255.255.255.252	N/A
R3	G0/0.10	192.168.10.1	255.255.255.0	N/A
	G0/0.20	192.168.20.1	255.255.255.0	N/A
	G0/0.30	192.168.30.1	255.255.255.0	N/A
	G0/0.88	192.168.88.1	255.255.255.0	N/A
	S0/0/0	10.3.3.2	255.255.255.252	N/A
	S0/0/1	10.2.2.2	255.255.255.252	N/A
S1	VLAN 88	192.168.88.2	255.255.255.0	192.168.88.1
S2	VLAN 88	192.168.88.3	255.255.255.0	192.168.88.1
S3	VLAN 88	192.168.88.4	255.255.255.0	192.168.88.1
PC1	NIC	DHCP assigned	DHCP assigned	DHCP assigned
PC2	NIC	DHCP assigned	DHCP assigned	DHCP assigned
PC3	NIC	DHCP assigned	DHCP assigned	DHCP assigned
TFTP Server	NIC	192.168.40.254	255.255.255.0	192.168.40.1

Background

This activity uses a variety of technologies you have encountered during your CCNA studies, including VLANs, STP, routing, inter-VLAN routing, DHCP, NAT, PPP, and Frame Relay. Your task is to review the requirements, isolate and resolve any issues, and then document the steps you took to verify the requirements.

Requirements

VLANs and Access

• S2 is the spanning-tree root for VLAN 1, 10, and 20. S3 is the spanning-tree root for VLAN 30 and 88.
• The trunk links connecting the switches are in native VLAN 99.
• R3 is responsible for inter-VLAN routing and serves as the DHCP server for VLANs 10, 20, and 30.

Routing

• Each router is configured with EIGRP and uses AS 22.
• R2 is configured with a default route pointing to the ISP and redistributes the default route.
• NAT is configured on R2 and no untranslated addresses are permitted to cross the Internet.

WAN Technologies

• The serial link between R1 and R2 uses Frame Relay.
• The serial link between R2 and R3 uses HDLC encapsulation.
• The serial link between R1 and R3 uses PPP with CHAP.

Connectivity

• Devices should be configured according to the Addressing Table.
• Every device should be able to ping every other device.

Troubleshooting Documentation

Device	Problem	Solution
R1	R1 and R2 are not forming an adjacency	interface Serial0/0/0 encapsulation frame-relay
R1	Username and passwords are incorrect	username R3 password 0 ciscoccna
R2	TFTP Server cannot ping the Outside Host	interface g0/0 no ip nat outside ip nat inside interface g0/1 ip nat outside
R2	Default route is pointing to the incorrect interface	no ip route 0.0.0.0 0.0.0.0 g0/0 ip route 0.0.0.0 0.0.0.0 g0/1
S1	Native VLAN mismatch	interface range fa0/1-4 switchport trunk native vlan 99
S2	This switch is not the root bridge for VLANs 1, 10, and 20	spanning-tree vlan 1,10,20 root primary
S3	The PCs do not pull a DHCP address	interface g0/1 switchport mode trunk

Verification Documentation

Capture output from verification commands and provide documentation proving that each of the requirements has been satisfied.

Answer’s Note: The answer key for this section is left blank because there are many ways to verify the requirements.

Suggested Scoring Rubric

Packet Tracer scores 60 points. The troubleshooting documentation and Answer verification is worth 40 points.