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Cisco Bug: CSCsz57113 - Remove/add of wlan-vlan map on AP Groups; mcast pkts sent to wrong VLAN

Last Modified

Jun 10, 2010

Products (1)

  • Cisco 5500 Series Wireless Controllers

Known Affected Releases

5.2(178.231) 6.0(180.33)

Description (partial)

After Remove/add of wlan-vlan map on AP Groups we see IPv6 address of wrong vlan subnet  is assigned to the Client. IPv6 traffic is dropped . 

1.Create 1 WlAN ( WLAN-1) , enable it to support IPv6.
2. Create 2 AP Grps AP-GRP1 and AP-GRP2 mapped to VLan A and Vlan B respectively for the Wlan (WLAN-1) .
3. Connect the client to the WLAN-1 on AP-GRP1 and it gets both the proper IPv4 and IPv6 address(via autoconfig )  of the Vlan A  it was mapped to .
4. Now remove the Wlan from one of the AP Group (AP-GRP1) and again map the (WLAN-1) to a different Vlan (Vlan B) on AP-GRP1.  
5. Disconnect the client, remove the client from the wism database .
6. After some time Now make the client connect to the WLAN-1 and it seems that though it gets the IPv4 address of the correct Vlan ( Vlan B ) fine but it fails to get the correct IPv6 address ( gets the IPv6 address of the Vlan A . 

Ping to any IPv6 address fails .
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