Answer: D 

Explanation: 

Here is the configuration found on the New_Switch: 

This causes the port cost for link eth 1/3 to increase the path cost to 250 for all VLANs, making that link less preferred so that only eth 1/2 will be used. 

Topic 3, Troubleshooting EIGRP 

11. - (Topic 3) 

Scenario: 

You have been brought in to troubleshoot an EIGRP network. You have resolved the initial issue between routers R2 and R4, but another issue remains. You are to locate the problem and suggest solution to resolve the issue. 

The customer has disabled access to the show running-config command. 

The network segment between R2 and R4 has become disconnected from the remainder of the network. How should this issue be resolved? 

A. Change the autonomous system number in the remainder of the network to be consistent with R2 and R4. 

B. Move the 192.168.24.0 network to the EIGRP 1 routing process in R2 and R4. 

C. Enable the R2 and R4 router interfaces connected to the 192.168.24.0 network. 

D. Remove the distribute-list command from the EIGRP 200 routing process in R2. 

E. Remove the distribute-list command from the EIGRP 100 routing process in R2. 

Answer: B 

Explanation: 

On R4 the DHCP IP address is not allowed for network 10.2.1.0/24 which clearly shows the problem lies on R4 & the problem is with DHCP 

Topic 19, Ticket 14: IPv6 Routing Issue 1

Topology Overview (Actual Troubleshooting lab design is for below network design)

-Client Should have IP 10.2.1.3

-EIGRP 100 is running between switch DSW1 & DSW2

-OSPF (Process ID 1) is running between R1, R2, R3, R4

-Network of OSPF is redistributed in EIGRP

-BGP 65001 is configured on R1 with Webserver cloud AS 65002

-HSRP is running between DSW1 & DSW2 Switches

The company has created the test bed shown in the layer 2 and layer 3 topology exhibits.

This network consists of four routers, two layer 3 switches and two layer 2 switches.

In the IPv4 layer 3 topology, R1, R2, R3, and R4 are running OSPF with an OSPF process number 1.

DSW1, DSW2 and R4 are running EIGRP with an AS of 10. Redistribution is enabled where necessary.

R1 is running a BGP AS with a number of 65001. This AS has an eBGP connection to AS 65002 in the ISP's network. Because the company's address space is in the private range.

R1 is also providing NAT translations between the inside (10.1.0.0/16 & 10.2.0.0/16) networks and outside (209.65.0.0/24) network.

ASW1 and ASW2 are layer 2 switches.

NTP is enabled on all devices with 209.65.200.226 serving as the master clock source.

The client workstations receive their IP address and default gateway via R4's DHCP server.

The default gateway address of 10.2.1.254 is the IP address of HSRP group 10 which is running on DSW1 and DSW2.

In the IPv6 layer 3 topology R1, R2, and R3 are running OSPFv3 with an OSPF process number 6.

DSW1, DSW2 and R4 are running RIPng process name RIP_ZONE.

The two IPv6 routing domains, OSPF 6 and RIPng are connected via GRE tunnel running over the underlying IPv4 OSPF domain. Redistrution is enabled where necessary.

Recently the implementation group has been using the test bed to do a ‘proof-of-concept' on several implementations. This involved changing the configuration on one or more of the devices.

You will be presented with a series of trouble tickets related to issues introduced during these configurations.

Note: Although trouble tickets have many similar fault indications, each ticket has its own issue and solution.

Each ticket has 3 sub questions that need to be answered & topology remains same.

Question-1 Fault is found on which device,

Question-2 Fault condition is related to,

Question-3 What exact problem is seen & what needs to be done for solution

===============================================================================

Answer: D

Answer: E 

Explanation: 

On DSW1, VALN ACL, Need to delete the VLAN access-map test1 whose action is to drop access-list 10; specifically 10.2.1.3 

Topic 16, Ticket 11 : IPV6 OSPF 

Topology Overview (Actual Troubleshooting lab design is for below network design) 

. Client Should have IP 10.2.1.3 

. EIGRP 100 is running between switch DSW1 & DSW2 

. OSPF (Process ID 1) is running between R1, R2, R3, R4 

. Network of OSPF is redistributed in EIGRP 

. BGP 65001 is configured on R1 with Webserver cloud AS 65002 

. HSRP is running between DSW1 & DSW2 Switches 

The company has created the test bed shown in the layer 2 and layer 3 topology exhibits. 

This network consists of four routers, two layer 3 switches and two layer 2 switches. 

In the IPv4 layer 3 topology, R1, R2, R3, and R4 are running OSPF with an OSPF process number 1. 

DSW1, DSW2 and R4 are running EIGRP with an AS of 10. Redistribution is enabled where necessary. 

R1 is running a BGP AS with a number of 65001. This AS has an eBGP connection to AS 65002 in the ISP's network. Because the company's address space is in the private range. 

R1 is also providing NAT translations between the inside (10.1.0.0/16 & 10.2.0.0/16) networks and outside (209.65.0.0/24) network. 

ASW1 and ASW2 are layer 2 switches. 

NTP is enabled on all devices with 209.65.200.226 serving as the master clock source. 

The client workstations receive their IP address and default gateway via R4's DHCP server. 

The default gateway address of 10.2.1.254 is the IP address of HSRP group 10 which is running on DSW1 and DSW2. 

In the IPv6 layer 3 topology R1, R2, and R3 are running OSPFv3 with an OSPF process number 6. 

DSW1, DSW2 and R4 are running RIPng process name RIP_ZONE. 

The two IPv6 routing domains, OSPF 6 and RIPng are connected via GRE tunnel running over the underlying IPv4 OSPF domain. Redistrution is enabled where necessary. 

Recently the implementation group has been using the test bed to do a ‘proof-of-concept' on several implementations. This involved changing the configuration on one or more of the devices. You will be presented with a series of trouble tickets related to issues introduced during these configurations. 

Note: Although trouble tickets have many similar fault indications, each ticket has its own issue and solution. 

Each ticket has 3 sub questions that need to be answered & topology remains same. 

Question-1 Fault is found on which device, 

Question-2 Fault condition is related to, 

Question-3 What exact problem is seen & what needs to be done for solution 

Solution 

Steps need to follow as below:-

. When we check on client 1 & Client 2 desktop we are not receiving DHCP address from R4 

ipconfig ----- Client will be receiving IP address 10.2.1.3 

. From Client PC we can ping 10.2.1.254…. 

. But IP 10.2.1.3 is able to ping from R4, R3, R2, R1. 

. Since the problem is R1 (2026::111:1) is not able to ping loopback of DSW1 (2026::102:1). 

. Kindly check for neighbourship of routers as IPV6…. As per design below neighbourship should be present for IPV6 

R1 ---R2 --- R3 --- R4--- DSW1 & DSW2 ----- Neighbourship between devices of IPV6 

R2 IPV6 OSPF neighbourship is with R1 

R3 IPV6 OSPF neighbourship is with R4 

. As per above snapshot we cannot see IPV6 neighbourship between R2 & R3 when checked interface configuration ipv6 ospf area 0 is missing on R2 which is connected to R3 

. Change required: On R2, IPV6 OSPF routing, Configuration is required to add ipv6 ospf 6 area 0 under interface serial 0/0/0.23 

Answer: D 

Explanation: 

On R4, in the redistribution of EIGRP routing protocol, we need to change name of route-map to resolve the issue. It references route-map OSPF_to_EIGRP but the actual route map is called OSPF->EIGRP. 

Answer: G 

Explanation: 

port security needs is configured on ASW1. 

Answer: C

Explanation:

Since we are unable to ping the IPv6 address, the problem is with IPv6 OSPF Routing.

Answer: C

Topic 2, Troubleshooting VTP 

7. - (Topic 2) 

A customer network engineer has made configuration changes that have resulted in some loss of connectivity. You have been called in to evaluate a switch network and suggest resolutions to the problems. 

PC2 in VLAN 200 is unable to ping the gateway address 172.16.200.1; identify the issue. 

A. VTP domain name mismatch on SW4 

B. VLAN 200 not configured on SW1 

C. VLAN 200 not configured on SW2 

D. VLAN 200 not configured on SW4