vlan ping help

[networkinggeek]

All I want is to ping across both PCs in vlan 10 but I cannot, what am I missing here?

SW1#show running-config int gigabitEthernet 0/0
Building configuration...

Current configuration : 122 bytes
!
interface GigabitEthernet0/0
switchport access vlan 10
switchport mode access
media-type rj45
negotiation auto
end

SW1#show running-config int gigabitEthernet 0/1
Building configuration...

Current configuration : 132 bytes
!
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
media-type rj45
negotiation auto
end

SW1#show running-config int vlan 10
Building configuration...

Current configuration : 39 bytes
!
interface Vlan10
no ip address
end

---------------

SW2#show running-config interface gigabitEthernet 0/0
Building configuration...

Current configuration : 122 bytes
!
interface GigabitEthernet0/0
switchport access vlan 10
switchport mode access
media-type rj45
negotiation auto
end

SW2#show running-config interface gigabitEthernet 0/1
Building configuration...

Current configuration : 132 bytes
!
interface GigabitEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
media-type rj45
negotiation auto
end

SW2#show running-config interface vlan10
Building configuration...

Current configuration : 39 bytes
!
interface Vlan10
no ip address
end

---

PC-2> sh ip

NAME : PC-2[1]
IP/MASK : 192.168.1.1/24
GATEWAY : 0.0.0.0
DNS :
MAC : 00:50:79:66:68:01
LPORT : 10002
RHOST:PORT : 127.0.0.1:10003
MTU: : 1500

---

NAME : PC-1[1]
IP/MASK : 192.168.1.2/24
GATEWAY : 0.0.0.0
DNS :
MAC : 00:50:79:66:68:00
LPORT : 10004
RHOST:PORT : 127.0.0.1:10005
MTU: : 1500

PC-1> ping 192.168.1.1
host (192.168.1.1) not reachable

[jalejand]

Nothing wrong on that particular configuration.
Is that GNS3?

Is SW1 learning PC1 mac address in gi0/0 for vlan 10?
Is SW1 learning PC2 mac address in gi0/1 for vlan 10?
Same for SW2.

[Deepak Kumar]

Hi,

Please collect some logs from both switches:

Show mac address-table

Show interface trunk

show CDP neighbor 

[colin.parkinson]

Put G0/1 into vlan 10?

At the minute it’s a trunk port

[Georg Pauwen]

Hello,

on a side note, make sure you have not inadvertently connected the PCs (or one PC) to the trunk port and vice versa, connected the inter-switch link through (one of ) the access ports...

So in short make sure your physical links match the logical configuration...

[brselzer]

Hello,

I see you created the SVI but did you create the layer 2 vlan? On both switches:

conf t

vlan 10

end

Hope that helps!

[networkinggeek]

Yes this in gns3, I do have vlan10 configured on both switches
I do not have anything in mac address table, when I try to ping from my pc1 to pc2 it says not reachable.

Am I doing SVI right? what gateway should I configure on vpcs?  I feel like it is purely layer 2. not sure what I am missing

SW1#show int tr
SW1#show int trunk

Port Mode Encapsulation Status Native vlan
Gi0/1 on 802.1q trunking 1

Port Vlans allowed on trunk
Gi0/1 1-4094

Port Vlans allowed and active in management domain
Gi0/1 1,10

Port Vlans in spanning tree forwarding state and not pruned
Gi0/1 1,10

SW1#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
SW2 Gig 0/1 140 R S I Gig 0/1

Total cdp entries displayed : 1

SW2#show int trunk

Port Mode Encapsulation Status Native vlan
Gi0/1 on 802.1q trunking 1

Port Vlans allowed on trunk
Gi0/1 1-4094

Port Vlans allowed and active in management domain
Gi0/1 1,10,20

Port Vlans in spanning tree forwarding state and not pruned
Gi0/1 1,10,20

SW2#sh cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID Local Intrfce Holdtme Capability Platform Port ID
SW1 Gig 0/1 149 R S I Gig 0/1

Total cdp entries displayed : 1

[Deepak Kumar]

Hi,

As both are in the same broadcast domain so default no required but cloud you try with below commands:

Start ping from the PC1 to PC2

Sw1"

vlan 10

exit

!

show mac address-table 

!
Sw2:

vlan 10

exit

!

show mac address-table 

!

Please note that after typing the exit command you will not get any error massage.

[paul driver · Accepted solution]

Hello

---

@networkinggeek wrote:

Yes this in gns3

---

That's your problem not your switch config, I assume your using the Etherswitch router in GNS3?

For trunks and access ports use fa1/0 onwards , Also make the interfaces duplex and speed modes to auto, you should see your connection.