160 © 2001- 2008 D-Link Corporation. All Rights Reserved.
D-Link Unified Access System User Manual
Table 53
describes the fields on the Wireless Global Configuration page.
Table 53.
General Global Configurations
Field
Description
Peer Group ID
In order to support larger networks, you can configure Unified Switches as
peers, with up to 4 switches in a peer group. Peer Unified Switches share
some information about APs and allow L3 roaming among them.
Peer Unified Switches are grouped according to the Group ID.
Client Roam
Timeout
This value determines how long to keep an entry in the Associated Client
Status list after a client has disassociated. Each entry in the status list shows
an age, and when the age reaches the value you configure in the timeout field,
the entry is deleted.
Ad Hoc Client
Status
This value determines how long to keep an entry in the Ad Hoc Client Status
list. Each entry in the status list shows an age, and when the age reaches the
value you configure in the timeout field, the entry is deleted.
AP Failure Status
This value determines how long to keep an entry in the AP Authentication
Failure Status list. Each entry in the status list shows an age, and when the
age reaches the value you configure in the timeout field, the entry is deleted.
Client Failure
Status
This value determines how long to keep an entry in the Client Authentication
Failure Status list. Each entry in the status list shows an age, and when the
age reaches the value you configure in the timeout field, the entry is deleted.
RF Scan Status
This value determines how long to keep an entry in the RF Scan Status list.
Each entry 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
Sets the maximum size of the IP packet handled by the network. The MTU is
enforced only on tunneled VAPs. Select one of the following values:
•
1500: Maps the tunneled IP frame size to 1518 bytes (untagged) and
1522 bytes (tagged). Use this setting if your network does not support
jumbo frames. Using 1500 as the Tunnel IP MTU size forces the D-Link
Unified Access System to limit its maximum message size to 1518/1522
bytes. This setting directs the wireless system to mitigate the problem of
oversized frames by enabling the MTU discovery protocol and limiting
the maximum segment size in TCP connection setup messages.
•
1520: Maps the tunneled IP frame size to 1538 bytes (untagged) and
1542 bytes (tagged). Use this setting if your network supports jumbo
frames and you have configured the physical ports between the switch
and the APs to support 1538/1542 byte packets.
IP Packets that use the L3 tunnel have an extra 20 bytes in the header for
encapsulation. This means that wireless clients configured with a 1500 byte
IP MTU size may exceed the maximum MTU size of the existing network
infrastructure if it is set up to switch and route 1518 (1522-tagged) byte
frames.
Setting the Network MTU Size to 1500 or 1520 does not affect physical port
MTU size. The physical ports on the switch and the rest of the network
devices must be configured with the appropriate MTU size.
NOTE: If the AP is not connected directly to the wireless switch and the
Tunnel IP MTU Size is set to 1520, any Ethernet segments in the path
between the AP and the wireless switch must support jumbo frames and be
configured for jumbo frames.
Summary of Contents for DWS-3024L
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