WLC is ARPing but will not receive answer from vlan-switch
Hi - this is my first posting in theese forums - hope I get it right
Setup: a procurve-vlan-switch (2915) is connected directly to a cisco-wlc (2504) on two ports.
Port 1 on the wlc has the management- and apmanager-interface, untagged, connected to untagged port on procurveswitch.
Port 2 on the wlc has a dynamic interface (vlan 100) connected to tagged (vlan100) port on the switch.
Port 1 I can ping, and everything works as it should, LAP connects and so on.
Port 2 I can't ping, and it will not let clients get an ip-address i the vlan100 segment.
Wireshark tells me, that wlc sends arp-requests to the vlan-gateway on the procurve switch, and also that the switch replies in the same vlan (with tagged packets). But the WLC will not pick theese answers up and keeps ARPing for the gateway. Result is = no dhcp-answer to the clients.
Workaround: If I first ping from the wlc to the gateway, everything works for 5 minutes, i.e. I can ping the dynamic interface on the wlc and clients get ip-addresses, but when the arp-cache times out, everything goes black again.
BIG question: Can anyone help me with this? Why will the wlc not pick the arp-answer from the switch? The wlc asks with tagged packets and get tagged replies imediatly but will not listen
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