Controllerless Networks

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Aruba
Posts: 233
Registered: ‎11-19-2009

Uplink VLAN Monitoring IAP

  • Problem: When a Client VLAN is configured on the IAP, which is not allowed or configured on the IAP’s uplink device: any client which connects to such an SSID will not be able to obtain an IP address.

  • Solution: This feature triggers the VLAN alert whenever a client connects to a SSID whose VLAN is not in allowed list of upstream device. This upstream device can be a switch directly connected to IAP or behind a tunnel
  • No CLI or GUI changes with respect to the feature.
  • Usually we see the VLAN alert with DHCP alert when client is unable to obtain the IP address if the connected SSID is configured with the mismatched VLAN.

uplinkiap1.jpg

 

 

uplinkiap2.jpg

 

Troubleshooting & Deugging:-

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uplinkiap3.jpg.png

 

 

VLAN X as Verified,  when an IAP receives any packet with VLAN X tag from the upstream device. This indicates that VLAN X is in allowed VLAN list of upstream device. Hence VLAN Alert is not generated.

 

VLAN Y as not Verified, when an IAP has not received any packet with VLAN Y tag from the upstream device.

This indicates that VLAN Y is not in allowed VLAN list of  upstream device. Hence an alert is generated for such a VLAN when a client is trying to connect to the SSID(with VLAN Y configured) and unable to obtain the IP address.

 

 

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