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Cannot ping across VLANs on Cisco 3550 - Home Test Lab

cturney11
Level 1
Level 1

Hi there, studying for my CCENT test and running into a rather major snag.

 

I have seen other similar posts about this issue with 3550's and I'm hoping I am just doing something wrong here.

 

As the title states, I cannot ping across the 2 VLANs I have set up.  There is only one Cisco 3550 switch and no other network gear involved.

 

IP Routing Enabled

VLAN 51 - IP:  10.1.51.1 / 24

VLAN 52 - IP:  10.1.52.1 / 24

Fa0/1 - PC with IP: 10.1.51.50 / 24   GW:  10.1.51.1

Fa0/2 - PC with IP: 10.1.52.50 / 24   GW:  10.1.52.1

*Both PCs Windows Firewalls are OFF*

 

Each PC can ping its respective gateway.  Each VLAN interface can ping each other on the switch.  VLAN 51 interface cannot ping VLAN 52 PC, and VLAN 52 interface cannot ping VLAN 51 PC.  Hope I am saying these things correctly.

 

Here is SHOW IP INT BR:

Interface IP-Address OK? Method Status Protocol
Vlan1 10.1.1.20 YES NVRAM up down
Vlan51 10.1.51.1 YES manual up up
Vlan52 10.1.52.1 YES manual up up
FastEthernet0/1 unassigned YES unset up up
FastEthernet0/2 unassigned YES unset up up
FastEthernet0/3 unassigned YES unset down down

*nothing is plugged in beyond port 2 so I just grabbed this to save space*

 

SHOW IP ROUTE:

Gateway of last resort is not set

10.0.0.0/24 is subnetted, 2 subnets
C 10.1.51.0 is directly connected, Vlan51
C 10.1.52.0 is directly connected, Vlan52

 

SHOW VLAN:

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Fa0/3, Fa0/4, Fa0/5, Fa0/6
Fa0/7, Fa0/8, Fa0/9, Fa0/10
Fa0/11, Fa0/12, Fa0/13, Fa0/14
Fa0/15, Fa0/16, Fa0/17, Fa0/18
Fa0/19, Fa0/20, Fa0/21, Fa0/22
Fa0/23, Fa0/24, Gi0/1, Gi0/2
2 VLAN0002 active
51 ENG active Fa0/1
52 MGMT active Fa0/2

 

I think that's everything.

 

If there is a better way to format the output text let me know.

 

Thanks.

2 Replies 2

maucapina
Level 1
Level 1

Hello

Are you sure you have your both PCs connected on the right ports on the switch? and do they have its right gateway configured, check it just in case. 

Please take an output from your ports configuration

 

show run int f0/1

show run int f0/2

show interface f0/1 switchport

show interface f0/2 switchport

PC1, connected to port 1, 10.1.51.50 / 24, GW: 10.1.51.1  -  confirmed

PC2, connected to port 2, 10.1.52.50 / 24, GW: 10.1.52.1  -  confirmed

 

Requested info below.

 

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

Switch1#show run int f0/1
Building configuration...

Current configuration : 84 bytes
!
interface FastEthernet0/1
switchport access vlan 51
switchport mode access
end

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

Switch1#show run int f0/2
Building configuration...

Current configuration : 84 bytes
!
interface FastEthernet0/2
switchport access vlan 52
switchport mode access
end

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

Switch1#show int
Switch1#show interfaces f0/1 sw
Switch1#show interfaces f0/1 switchport
Name: Fa0/1
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: native
Negotiation of Trunking: Off
Access Mode VLAN: 51 (ENG)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none

-----------------------------------------
Switch1#show interfaces f0/2 switchport
Name: Fa0/2
Switchport: Enabled
Administrative Mode: static access
Operational Mode: static access
Administrative Trunking Encapsulation: negotiate
Operational Trunking Encapsulation: native
Negotiation of Trunking: Off
Access Mode VLAN: 52 (MGMT)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk associations: none
Administrative private-vlan trunk mappings: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none

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

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