PC to switch connectivity fail vlan & spanning-tree

[majors10]

Hello all,

I've done everything I can think off and I just can't get this material. I cannot for the life of me ping pc to another pc using vlans.

If anyone can help me understand it better, it will be very much appreciated. I attached the packet tracer diagram and below are my 'show running-config'.

S1#show running-config

Building configuration...

Current configuration : 1818 bytes

!

version 12.2

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname S1

!

!

!

!

!

spanning-tree mode rapid-pvst

spanning-tree extend system-id

spanning-tree vlan 10,20,30 priority 24576

!

interface Port-channel1

switchport trunk native vlan 90

switchport mode trunk

!

interface Port-channel2

switchport trunk native vlan 90

switchport mode trunk

!

interface FastEthernet0/1

switchport trunk native vlan 90

switchport mode trunk

channel-group 2 mode passive

!

interface FastEthernet0/2

switchport trunk native vlan 90

switchport mode trunk

channel-group 2 mode passive

!

interface FastEthernet0/3

switchport trunk native vlan 90

switchport mode trunk

channel-group 1 mode auto

!

interface FastEthernet0/4

switchport trunk native vlan 90

switchport mode trunk

channel-group 1 mode auto

!

interface FastEthernet0/5

!

interface FastEthernet0/6

switchport access vlan 10

switchport mode access

spanning-tree portfast

spanning-tree bpduguard enable

!

interface FastEthernet0/7

!

interface FastEthernet0/8

!

interface FastEthernet0/9

!

interface FastEthernet0/10

!

interface FastEthernet0/11

!

interface FastEthernet0/12

!

interface FastEthernet0/13

!

interface FastEthernet0/14

!

interface FastEthernet0/15

!

interface FastEthernet0/16

!

interface FastEthernet0/17

!

interface FastEthernet0/18

!

interface FastEthernet0/19

!

interface FastEthernet0/20

!

interface FastEthernet0/21

!

interface FastEthernet0/22

!

interface FastEthernet0/23

!

interface FastEthernet0/24

!

interface GigabitEthernet0/1

!

interface GigabitEthernet0/2

!

interface Vlan1

no ip address

shutdown

!

interface Vlan90

mac-address 0000.0c84.9501

ip address 172.27.90.10 255.255.255.0

!

!

!

!

line con 0

!

line vty 0 4

login

line vty 5 15

login

!

!

!

!

end

[balaji.bandi]

You should have Layer3 interface in one of the switch to take care of Routing and available gateway for PC-A / B -C

Enable

ip routing

craete VLAN Interface ( one of the switch) make sure you allocated respective VLAN where PC connected

example : PC-A belong to VLAN 10

example : PC-B belong to VLAN 20

example : PC-C belong to VLAN 30

nterface FastEthernet0/6

switchport access vlan 10

switchport mode access

spanning-tree portfast

nterface FastEthernet0/7

switchport access vlan 20

switchport mode access

spanning-tree portfast

nterface FastEthernet0/8

switchport access vlan 30

switchport mode access

spanning-tree portfast

interface Vlan10

ip address 172.27.10.1 255.255.255.0

interface Vlan20

ip address 172.27.20.1 255.255.255.0

interface Vlan30

ip address 172.27.30.1 255.255.255.0

[majors10]

thank you for your reply. I added the gateway to the switches and still no connectivity? 

[Martin L]

You can attach PT file but it must be a zip format; so zip it, attach it, we can figure it out.

In the past, sometimes my PT got "Stuck".  Save it, close it, re-open your PT  file and then tested it

[majors10]

Hey sorry for the late reply, but I had to hold off on this project. Now I am back to square one and would appreciate the help.

[majors10]

Sorry but I don't see anywhere, where I can attach the PT file? 

[Georg Pauwen]

At the bottom of your 'Reply' post there is an option to drag and drop or browse files to attach. Make sure the Packet Tracer project (.pkt) file is zipped (.zip).

[majors10]

Thank you all for your replies. I'm not sure what I'm doing wrong so any help would be much appreciated. 

[balaji.bandi]

The VLAN interface configuration required only on 1 switch not on all switches ?

Post all the switches configuration after modify the config.

give information where the PC connected what port in each switch ?

Let us know below tests ;

From PC-A / PC- B / PC-C  are you able to ping respected gateways ? Gateway IP that is .1 ? all VLAN ?

[majors10]

S1#show running-config

Building configuration...

Current configuration : 2073 bytes

!

version 12.2

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname S1

!

!

!

!

!

spanning-tree mode rapid-pvst

spanning-tree extend system-id

spanning-tree vlan 10,20,30 priority 24576

!

interface Port-channel1

switchport trunk native vlan 90

switchport mode trunk

!

interface Port-channel2

switchport trunk native vlan 90

switchport mode trunk

!

interface FastEthernet0/1

switchport trunk native vlan 90

switchport mode trunk

channel-group 2 mode passive

!

interface FastEthernet0/2

switchport trunk native vlan 90

switchport mode trunk

channel-group 2 mode passive

!

interface FastEthernet0/3

switchport trunk native vlan 90

switchport mode trunk

channel-group 1 mode auto

!

interface FastEthernet0/4

switchport trunk native vlan 90

switchport mode trunk

channel-group 1 mode auto

!

interface FastEthernet0/5

!

interface FastEthernet0/6

switchport access vlan 10

switchport mode access

spanning-tree portfast

spanning-tree bpduguard enable

!

interface FastEthernet0/7

!

interface FastEthernet0/8

!

interface FastEthernet0/9

!

interface FastEthernet0/10

!

interface FastEthernet0/11

!

interface FastEthernet0/12

!

interface FastEthernet0/13

!

interface FastEthernet0/14

!

interface FastEthernet0/15

!

interface FastEthernet0/16

!

interface FastEthernet0/17

!

interface FastEthernet0/18

!

interface FastEthernet0/19

!

interface FastEthernet0/20

!

interface FastEthernet0/21

!

interface FastEthernet0/22

!

interface FastEthernet0/23

!

interface FastEthernet0/24

!

interface GigabitEthernet0/1

!

interface GigabitEthernet0/2

!

interface Vlan1

no ip address

shutdown

!

interface Vlan10

mac-address 0000.0c84.9502

ip address 172.27.10.1 255.255.255.0

!

interface Vlan20

mac-address 0000.0c84.9503

ip address 172.27.20.1 255.255.255.0

!

interface Vlan30

mac-address 0000.0c84.9504

ip address 172.27.30.1 255.255.255.0

!

interface Vlan90

mac-address 0000.0c84.9501

ip address 172.27.90.10 255.255.255.0

!

!

!

!

line con 0

!

line vty 0 4

login

line vty 5 15

login

!

!

!

!

end

S2#show running-config

Building configuration...

Current configuration : 1849 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 rapid-pvst

spanning-tree extend system-id

spanning-tree vlan 90 priority 24576

spanning-tree vlan 10,20,30 priority 28672

!

interface Port-channel2

switchport trunk native vlan 90

switchport mode trunk

!

interface Port-channel3

switchport trunk native vlan 90

switchport mode trunk

!

interface FastEthernet0/1

switchport trunk native vlan 90

switchport mode trunk

channel-group 2 mode active

!

interface FastEthernet0/2

switchport trunk native vlan 90

switchport mode trunk

channel-group 2 mode active

!

interface FastEthernet0/3

switchport trunk native vlan 90

switchport mode trunk

channel-group 3 mode on

!

interface FastEthernet0/4

switchport trunk native vlan 90

switchport mode trunk

channel-group 3 mode on

!

interface FastEthernet0/5

!

interface FastEthernet0/6

!

interface FastEthernet0/7

!

interface FastEthernet0/8

!

interface FastEthernet0/9

!

interface FastEthernet0/10

!

interface FastEthernet0/11

!

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

spanning-tree portfast

spanning-tree bpduguard enable

!

interface FastEthernet0/19

!

interface FastEthernet0/20

!

interface FastEthernet0/21

!

interface FastEthernet0/22

!

interface FastEthernet0/23

!

interface FastEthernet0/24

!

interface GigabitEthernet0/1

!

interface GigabitEthernet0/2

!

interface Vlan1

no ip address

shutdown

!

interface Vlan90

mac-address 00e0.a3b2.2501

ip address 172.27.90.11 255.255.255.0

!

!

!

!

line con 0

!

line vty 0 4

login

line vty 5 15

login

!

!

!

!

end

S3#show running-config

Building configuration...

Current configuration : 1812 bytes

!

version 12.2

no service timestamps log datetime msec

no service timestamps debug datetime msec

no service password-encryption

!

hostname S3

!

!

!

!

!

spanning-tree mode rapid-pvst

spanning-tree extend system-id

spanning-tree vlan 90 priority 28672

!

interface Port-channel1

switchport trunk native vlan 90

switchport mode trunk

!

interface Port-channel3

switchport trunk native vlan 90

switchport mode trunk

!

interface FastEthernet0/1

switchport trunk native vlan 90

switchport mode trunk

channel-group 3 mode on

!

interface FastEthernet0/2

switchport trunk native vlan 90

switchport mode trunk

channel-group 3 mode on

!

interface FastEthernet0/3

switchport trunk native vlan 90

switchport mode trunk

channel-group 1 mode desirable

!

interface FastEthernet0/4

switchport trunk native vlan 90

switchport mode trunk

channel-group 1 mode desirable

!

interface FastEthernet0/5

!

interface FastEthernet0/6

!

interface FastEthernet0/7

!

interface FastEthernet0/8

!

interface FastEthernet0/9

!

interface FastEthernet0/10

!

interface FastEthernet0/11

!

interface FastEthernet0/12

!

interface FastEthernet0/13

!

interface FastEthernet0/14

!

interface FastEthernet0/15

!

interface FastEthernet0/16

!

interface FastEthernet0/17

!

interface FastEthernet0/18

switchport access vlan 30

switchport mode access

spanning-tree portfast

spanning-tree bpduguard enable

!

interface FastEthernet0/19

!

interface FastEthernet0/20

!

interface FastEthernet0/21

!

interface FastEthernet0/22

!

interface FastEthernet0/23

!

interface FastEthernet0/24

!

interface GigabitEthernet0/1

!

interface GigabitEthernet0/2

!

interface Vlan1

no ip address

shutdown

!

interface Vlan90

mac-address 0009.7cc0.de01

ip address 172.27.90.12 255.255.255.0

!

!

!

!

line con 0

!

line vty 0 4

login

line vty 5 15

login

!

!

!

!

end

yes, there is connection between the their respected gateways. 

no connection between other vlan gateways.

[acampbell]

Hi,

Have you actually created the vlans on the switches

On a VTP server switch or on then all if in vtp transparent mode

something like 

!

vlan 10

name PCs-Vlan10

!

vlan 20

!

name PCs-Vlan20

!

vlan 30

name PCs-Vlan30

!

!

vlan 90

name NATIVE-VLAN

!

[majors10]

Yes I have, and same results, no connectivity. 

[Martin L]

as BB mentioned in his post; you need L3 switch; Although PT's 2960 (l2 switch) can handle routing, L3 switch like c3560 or c3650 can do better job and look better. 

To communicate within same vlan (same subnet), you do not need routing enabled;

To communicate between vlans and different subents, you need either L3 switch using SVIs or Router-on-a-stick (ROAS) or plain router with several links to switch.

Regards, ML
**Please Rate All Helpful Responses **

[majors10]

Okay, I'm not too familiar with the switches, but are you implying that I delete those 2960 switches and replace them with the L3 switches? 

[paul driver]

Hello

What you show are just the access layer switches and the end hosts what you dont show is the L3 device that would be responsible for the inter-vlan routing, This device will have the L3 interfaces of the default-gateways that the hosts are using, the switches you show should be running as host switches meaning no ip routing enabled

Post the PT file or the running config of the L3 device in this network