Solutions

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13/6/2015

Solutions

Solutions
 
Task 1: Troubleshoot VLAN Connectivity

Step 2:
The ping should not be successful. You should proceed to troubleshoot the connectivity between SW1 and PC1.
PC1>ping 10.1.10.1
Type escape sequence to abort.
Sending 5, 100­byte ICMP Echos to 10.1.10.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Step 4:
You should see that the interface status is up/up. This status indicates that the problem is not on the link
between PC1 and SW1.
SW1#show interfaces Ethernet0/1
Ethernet0/1 is up, line protocol is up (connected) 
<output omitted>
Step 5:
The interface is in VLAN 10. However, the switch port is inactive, which means that VLAN 10 does not exist on
the switch.
SW1#show interfaces Ethernet0/1 switchport 
Name: Et0/1
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: native
Operational Dot1q Ethertype:  0x8100
Negotiation of Trunking: Off
Access Mode VLAN: 10 (Inactive)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
<output omitted>
Step 6:
SW1#show vlan
VLAN Name                             Status    Ports
­­­­ ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ ­­­­­­­­­ ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­
1    default                          active    Et0/0, Et0/2, Et0/3, Et1/2
                                                Et1/3, Et2/0, Et2/1, Et2/2
                                                Et2/3, Et3/0, Et3/1, Et3/2
                                                Et3/3, Et4/0, Et4/1, Et4/2
                                                Et4/3, Et5/0, Et5/1, Et5/2
                                                Et5/3
20   VLAN0020                         active    
1002 fddi­default                     act/unsup 
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1003 token­ring­default               act/unsup 
1004 fddinet­default                  act/unsup 
1005 trnet­default                    act/unsup 
<output omitted>
Step 7:
Enter this command on the SW1 switch:
SW1(config)#vlan 10 
Step 8:
SW1#show vlan
VLAN Name                             Status    Ports
­­­­ ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­ ­­­­­­­­­ ­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­­
1    default                          active    Et0/0, Et0/2, Et0/3, Et1/2
                                                Et1/3, Et2/0, Et2/1, Et2/2
                                                Et2/3, Et3/0, Et3/1, Et3/2
                                                Et3/3, Et4/0, Et4/1, Et4/2
                                                Et4/3, Et5/0, Et5/1, Et5/2
                                                Et5/3
10   VLAN0010                         active    Et0/1
20   VLAN0020                         active    
1002 fddi­default                     act/unsup 
1003 token­ring­default               act/unsup 
1004 fddinet­default                  act/unsup 
1005 trnet­default                    act/unsup 
Step 9:
The interface should be in VLAN 10 and should no longer be inactive.
SW1#show interfaces Ethernet0/1 switchport 
Name: Et0/1
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: native
Operational Dot1q Ethertype:  0x8100
Negotiation of Trunking: Off
Access Mode VLAN: 10 (VLAN0010)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
<output omitted>
Step 10:
This time the ping should be successful.
PC1>ping 10.1.10.1
Type escape sequence to abort.
Sending 5, 100­byte ICMP Echos to 10.1.10.1, timeout is 2 seconds:
.!!!!
Success rate is 80 percent (4/5), round­trip min/avg/max = 1/1/1 ms
Task 2: Troubleshoot Trunk Connectivity Between the Switches

Step 2:
The ping should not be successful. You should proceed to troubleshoot the connectivity between the SW1 and
SW2.
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PC1>ping 10.1.20.100
Type escape sequence to abort.
Sending 5, 100­byte ICMP Echos to 10.1.20.100, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
Step 4:
You should see that the interface is up. Proceed with troubleshooting the configuration of the trunk between the
switches.
SW1#show interfaces Ethernet1/1
Ethernet1/1 is up, line protocol is up (connected) 
<output omitted>
Step 5:
You should see that the interface is in the access mode.
SW1#show interfaces Ethernet1/1 switchport 
Name: Et1/1
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: native
Operational Dot1q Ethertype:  0x8100
Negotiation of Trunking: Off
<output omitted>
Step 7:
You should see that the interface is in the trunk mode.
SW2#show interfaces Ethernet1/0 switchport 
Name: Et1/0
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Operational Dot1q Ethertype:  0x8100
Negotiation of Trunking: On
<output omitted>
Step 8:
Enter these commands on the SW1 switch:
SW1(config)#interface Ethernet1/1
SW1(config­if)#switchport mode trunk 
Step 9:
You should see that the interface is in now in trunk operational mode.
SW1#show interfaces Ethernet1/1 switchport 
Name: Et1/1
Switchport: Enabled
Administrative Mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dot1q
Operational Trunking Encapsulation: dot1q
Operational Dot1q Ethertype:  0x8100
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Negotiation of Trunking: On
<output omitted>
Step 10:
The ping should be successful.
PC1>ping 10.1.20.100
Type escape sequence to abort.
Sending 5, 100­byte ICMP Echos to 10.1.20.100, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round­trip min/avg/max = 1/1/1 ms
Step 11:
Enter this command on the SW1 switch:
SW1#copy running­config startup­config

© 1992­2014 Cisco Systems, Inc. All rights reserved.

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