Cisco Cisco 2106 Wireless LAN Controller Notas de publicación
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Release Notes for Cisco Wireless LAN Controllers and Lightweight Access Points for Release 6.0.199.4
OL-31336-01
Important Notes for Controllers and Nonmesh Access Points
Important Notes for Controllers and Nonmesh Access Points
This section describes important information about controllers and nonmesh lightweight access points.
Upgrading to 6.0.199.4 or 7.0.98.0 Can Disrupt DHCP Service When Using
Controller’s Internal DHCP Feature
Controller’s Internal DHCP Feature
Upgrading to controller release 6.0.196.0 or 7.0.98.0 can cause client devices to fail to complete DHCP.
To work around this problem, use an external DHCP server, such as a router or a Layer-3 switch. This
defect is described in CSCth68708, which is visible in the Bug Toolkit on Cisco.com at this URL:
To work around this problem, use an external DHCP server, such as a router or a Layer-3 switch. This
defect is described in CSCth68708, which is visible in the Bug Toolkit on Cisco.com at this URL:
Increase in the IGMP Timeout Value from 30 Seconds to 120 Minutes
To set the IGMP timeout, enter a value between 30 and 7200 seconds in the IGMP Timeout field. The
controller sends three queries in one timeout value at an interval of timeout /3 (if the timeout value is
more than 360 seconds, controller sends one query every 120 seconds, irrespective of the value
configured) to see if any clients exist for a particular multicast group. If the controller does not receive
a response through an IGMP report from the client, the controller times out the client entry from the
MGID table. When no clients are left for a particular multicast group, the controller waits for the IGMP
timeout value (if the timeout value is more than 360 seconds, controller waits for 360 seconds
irrespective of the value configured) to expire and then deletes the MGID entry from the controller. The
controller always generates a general IGMP query (that is, to destination address 224.0.0.1) and sends it
on all WLANs with an MGID value of 1.
controller sends three queries in one timeout value at an interval of timeout /3 (if the timeout value is
more than 360 seconds, controller sends one query every 120 seconds, irrespective of the value
configured) to see if any clients exist for a particular multicast group. If the controller does not receive
a response through an IGMP report from the client, the controller times out the client entry from the
MGID table. When no clients are left for a particular multicast group, the controller waits for the IGMP
timeout value (if the timeout value is more than 360 seconds, controller waits for 360 seconds
irrespective of the value configured) to expire and then deletes the MGID entry from the controller. The
controller always generates a general IGMP query (that is, to destination address 224.0.0.1) and sends it
on all WLANs with an MGID value of 1.
ARP Requests Sometimes Fail for Access Points Connected Directly to
Cisco 2100 Series Controllers
Cisco 2100 Series Controllers
Cisco 2100 Series Controllers do not support ARP requests from access points connected directly to a
port on the controller unless there is an interface configured on that controller port. ARP requests from
the access point cannot reach the gateway on the interface VLAN and the access point might lose its
connection to the controller.
port on the controller unless there is an interface configured on that controller port. ARP requests from
the access point cannot reach the gateway on the interface VLAN and the access point might lose its
connection to the controller.
To work around this limitation, configure the access point’s default gateway to match the controller’s
management IP address, or connect the access point to a switch port between the access point and the
2100 series controller.
management IP address, or connect the access point to a switch port between the access point and the
2100 series controller.
WPlus License Features Included in Base License
All features included in a Wireless LAN Controller WPlus license are now included in the base license;
this change is introduced in release 6.0.196.0. There are no changes to WCS BASE and PLUS licensing.
this change is introduced in release 6.0.196.0. There are no changes to WCS BASE and PLUS licensing.
These WPlus license features are included in the base license:
•
Office Extend AP
•
Enterprise Mesh
•
CAPWAP Data Encryption