I am setting up a simulated Cisco Packet Tracer with three
Cisco Catalyst 2960 switches S1, S2 and S3. S1 being the trunk for S2 and S3.
I have three(3) interfaces
F0/18 that are connected to my switches from three(3) PCs. I could ping from say PC1 to PC4 and and as well as PC3 to PC6 on same VLAN. However, PC2 to PC5 I could not ping and I found out that the interface
F0/18 Operational Mode is down but the working one is not.
The first two F0/11 and F0/6 are connected to PC1, P3, PC4 and PC6 which are all working and have the following information using
show interface <interface id> switchport command.
Name: Fa0/18 Switchport: Enabled Administrative Mode: static access Operational Mode: static access Administrative Trunking Encapsulation: dot1q Operational Trunking Encapsulation: native Negotiation of Trunking: Off Access Mode VLAN: 20 (Students) Trunking Native Mode VLAN: 1 (Default)
But the first two again are working. However,
F0/18 is not with the following information.
Name: Fa0/11 Switchport: Enabled Administrative Mode: static access Operational Mode: down Administrative Trunking Encapsulation: dot1q Operational Trunking Encapsulation: native Negotiation of Trunking: Off Access Mode VLAN: 10 (Faculty/Staff) Trunking Native Mode VLAN: 1 (default) .....<output omitted> Appliance trust: none
The only difference I see is that the working ones has Appliance Trust: none but the non-working one has none.
Also this is an example running-configuration for S2:
Current configuration : 1248 bytes ! version 12.2 no service timestamps log datetime msec no service timestamps debug datetime msec no service password-encryption ! hostname S2 ! ! ! ! ! spanning-tree mode pvst ! interface FastEthernet0/1 ! interface FastEthernet0/2 ! interface FastEthernet0/3 ! interface FastEthernet0/4 interface FastEthernet0/5 ! interface FastEthernet0/6 switchport access vlan 30 switchport mode access ! interface FastEthernet0/7 ! interface FastEthernet0/8 ! interface FastEthernet0/9 ! interface FastEthernet0/10 ! interface FastEthernet0/11 switchport access vlan 10 switchport mode access ! interface FastEthernet0/12 ! interface FastEthernet0/13 ! interface FastEthernet0/14 ! interface FastEthernet0/15 ! interface FastEthernet0/16 ! interface FastEthernet0/17 ! interface FastEthernet0/18 switchport access vlan 20 switchport mode access ! interface FastEthernet0/19 ! interface FastEthernet0/20 ! interface FastEthernet0/21 ! interface FastEthernet0/22 ! interface FastEthernet0/23 ! interface FastEthernet0/24 ! interface GigabitEthernet0/1 ! interface GigabitEthernet0/2 switchport trunk native vlan 99 switchport mode trunk ! interface Vlan1 no ip address shutdown ! ! ! ! line con 0 ! line vty 0 4 login line vty 5 15 login ! ! end
What could have gone wrong?
I am just a newbie on this one, so please bear with me.