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I have two PCs on the same VLAN cannnot ping each other

Posted on 2008-06-12
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Last Modified: 2008-10-15
I have two switches (A, and B) created with same VLAN name of alpha, for fault tolerance B will be a backup to A.

I have a pc on Switch B connected to a port on  alpha VLAN which can ping the firewall in Switch A, the firewall is connected to the untrusted port. But the PC from Switch B cannnot ping anything in VLAN alpha of switch A.

Does anyone have a solution?

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Question by:yaminz66
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Expert Comment

by:Don Johnston
ID: 21768725
Is the firewall on switch A connected to an access port in the "alpha" VLAN or is it connected to a trunk port?
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Author Comment

by:yaminz66
ID: 21774397
I think it is on the accs poort
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Author Comment

by:yaminz66
ID: 21774435
can u explain what is the difference between access port and trunk port?

Regards
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Expert Comment

by:Don Johnston
ID: 21775119
An access port can only carry traffic for a single VLAN. A trunk port can carry traffic for many VLANs.

What kind of switch is this?
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by:yaminz66
ID: 21776980
Its a cisco switch 2960
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by:Don Johnston
ID: 21777539
Is there only the one VLAN or do you have multiple VLANs?

Can you post the config of the switches.
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Accepted Solution

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yaminz66 earned 0 total points
ID: 22684962
Hi

There are multiple VLANS - it was resolved by someone else and he did the following:

I have changed the following in the switch :

interface port-channel 1
switch port trunk allowed vlan 235

It started to work
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