D-Link DWS-4026 Product Manual - Page 508

D-Link Unified Access System Software User Manual 12/10/09 Table 329: General Global Configurations Field Description Detected Clients Status This value determines how long to keep an entry in the Detected Client Status list. Each entry Timeout in the status list shows an age, and when the age reaches the value you configure in the timeout field, the entry is deleted. Tunnel IP MTU Size Cluster Priority AP Client QoS Select the maximum size of an IP packet handled by the network. The MTU is enforced only on tunneled VAPs. When IP packets are tunneled between the APs and the Unified Switch, the packet size is increased by 20 bytes during transit. This means that clients configured for 1500 byte IP MTU size may exceed the maximum MTU size of existing network infrastructure which is set up to switch and route 1518 (1522-tagged) byte frames. If you increase the tunnel IP MTU size, you must also increase the physical MTU of the ports on which the traffic flows. Note: f any of the following conditions are true, you do not need to increase the tunnel IP MTU size: • The wireless network does not use L3 tunneling. • The tunneling mode is used only for voice traffic, which typically has small packets. • The tunneling mode is used only for TCP based protocols, such as HTTP. This is because the AP automatically reduces the maximum segment size for all TCP connections to fit within the tunnel. Specify the priority of this switch for the Cluster Controller election. The switch with highest priority in a cluster becomes the Cluster Controller. If the priority is the same for all switches, then the switch with lowest IP address becomes the Cluster Controller. A priority of 0 means that the switch cannot become the Cluster Controller. The highest possible priority is 255. Enable or disable the client QoS feature. If AP Client QoS is disabled, the Client QoS configuration remains in place, but any ACLs or DiffServ policies applied to wireless traffic are not enforced. The Client QoS feature extends the primary QoS capabilities of the Unified Switch to the wireless domain. More specifically, access control lists (ACLs) and differentiated service (DiffServ) policies are applied to wireless clients associated to the AP. Wireless SNMP Trap Configuration If you use Simple Network Management Protocol (SNMP) to manage the Unified Switch, you can configure the SNMP agent on the switch to send traps to the SNMP manager on your network from the Administration > Advanced Configuration > Global > SNMP Traps tab. Page 508 Configuring Advanced Settings Document 34CSFP6XXUWS-SWUM100-D7