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Dhikra Marghli

problem internet and i can't ping vlan DAta wifi



I have 10 acces point  AIR-CAP70  and WLC   cisco  2500   and switch cisco 9200L


1)    have two vlan : vlan 1:managment :172.16.0.x/24  for access point and PC fixe  with  in router cisco


 Vlan 7 : vlan data  for USER  172.16.81.x/20  and configured in firwall CLAVISTER and poll dhcp for vlan 7 configured in WLC  


2)  port in switch 9200 conncted to wlc : 

interface GigabitEthernet1/0/13
switchport trunk native vlan 7
switchport trunk allowed vlan 1,7
switchport mode trunk


3)  so i try more diagnositic and i have not a internet and pc laptop can't ping ///  


so i need what's the problem exact that i have not internet !!


so please what i can check to i give more detail about this problem


i wait a reply from expert wirless that help  and give the solution !!


thanks in advance 





Sandeep Choudhary
VIP Mentor

Looks like a routing issue.

Is ping allowed via firewall ?


Can you please a Draft.. how are these connected then we can try to find-out the root cause.





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from fw clavister  : i can ping ( gatway  vlan 7)  for user  but i can't ping address ip vlan 7 ( in wlc )


switch 9200 conncted router  and router conncted to fw 





connect laptop with LAN cable on switch with vlan 7 and check if you can access internet or can ping the firewall or not ?



Scott Fella
Hall of Fame Master

Vlan 1 is always untagged so that is your problem. You can’t make vlan 7 native (untagged) and also have vlan 1 work.

Try tagging vlan 7
interface GigabitEthernet1/0/13
switchport trunk native vlan 1
switchport trunk allowed vlan 1,7
switchport mode trunk

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the problem is resolved ...not yet !!



You should not open a new thread on the same thing.  You need to understand how vlans are tagged and then look over your design.  Vlan 1 from majority of all manufactures will not look at the tagging.  What this means is that vlan 1 is untagged, if you try to tag this vlan on other devices, the switches will ignore it as it is looking for untagged vlans.  So redo your vlans because it is not right.

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