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D-Link DWL-8500AP Product Manual - Page 161

Lease Time, Managed Mode, MDI and MDI-X, MSCHAP V2, Multicast, IP Address, IEEE 802, Access Point

UPC - 790069297212

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Glossary Lease Time The Lease Time specifies the period of time the DHCP Server gives its clients an IP Address and other required information. When the lease expires, the client must request a new lease. If the lease is set to a short span, you can update your network information and propagate the information provided to the clients in a timely manner. LLC The Logical Link Control (LLC) layer controls frame synchronization, flow control, and error checking. It is a higher level protocol over the PHY layer, working in conjunction with the MAC layer. M MAC The Media Access Control (MAC) layer handles moving data packets between NICs across a shared channel. It is a higher level protocol over the PHY layer. It provides an arbitration mechanism in an attempt to prevent signals from colliding. It uses a hardware address, known as the MAC address, that uniquely identifies each node of a network. IEEE 802 network devices share a common 48-bit MAC address format, displayed as a string of twelve (12) hexadecimal digits separated by colons, for example FE:DC:BA:09:87:65. Managed Mode In Managed Mode, the D-Link Access Point is part of the D-Link Unified Wired/Wireless Access System, and you manage it by using the D-Link Unified Switch. If an AP is in Managed Mode, the Administrator Web UI is disabled. MDI and MDI-X Medium Dependent Interface (MDI) and MDI crossover (MDIX) are twisted pair cabling technologies for Ethernet ports in hardware devices. Built-in twisted pair cabling and auto-sensing enable connection between like devices with the use of a standard Ethernet cable. (For example, if a wireless access point supports MDI/MDIX, one can successfully connect a PC and that access point with an Ethernet cable rather than having to use a crossover cable). MIB Management Information Base (MIB) is a virtual database of objects used for network management. SSID agents along with other SNMP tools can be used to monitor any network device defined in the MIB. MSCHAP V2 Microsoft Challenge Handshake Authentication Protocol Version 2 (MSCHAP V2) provides authentication for PPP connections between a Windows-based computer and an Access Point or other network access device. MTU The Maximum Transmission Unit is the largest physical packet size, measured in bytes, that a network can transmit. Any messages larger than the MTU are fragmented into smaller packets before being sent. Multicast A Multicast sends the same message to a select group of recipients. Sending an e-mail message to a mailing list is an example of multicasting. In wireless networks, multicast usually refers to an interaction in which the access point sends data traffic in the form of IEEE 802.1X Frames to a specified set of client stations (MAC addresses) on the network. Some wireless security modes distinguish between how unicast, multicast, and broadcast frames are encrypted or whether they are encrypted. See also Unicast and Broadcast. N NAT Network Address Translation is an Internet standard that masks the internal IP addresses being used in a LAN. A NAT server running on a gateway maintains 161

Section	Page
Unified Access Point (AP) Administrator’s Guide	1
Table of Contents	3
List of Figures	7
List of Tables	9
About This Document	11
Document Organization	11
Audience	11
Document Conventions	11
Online Help, Supported Browsers, and Limitations	12
Overview of the D-Link Access Point	15
Features and Benefits	16
IEEE Standards Support	16
Wireless Features	16
Security Features	17
Networking	17
Maintainability	17
Access Point Hardware	18
Preparing to Install the Access Point	19
Default Settings for the Unified Access Points	19
Administrator’s Computer Requirements	21
Wireless Client Requirements	22
Dynamic and Static IP Addressing on the AP	23
Recovering an IP Address	23
Discovering a Dynamically Assigned IP Address	23
Using the Reset Button	23
Installing the Access Point	25
Installing the Unified Access Point	25
Viewing Basic Settings	29
Using the CLI to View the IP Address	30
Configuring the Ethernet Interface	31
Using the Web UI to configure Ethernet Settings	31
Using the CLI to Configure Ethernet Settings	33
Configuring IEEE 802.1X Authentication	34
Using the Web UI to Configure 802.1X Authentication Information	35
Using the CLI to Configure 802.1X Authentication Information	36
Verifying the Installation	36
Configuring Access Point Security	39
Understanding Security on Wireless Networks	39
Choosing a Security Mode	39
Comparing Security Modes	40
When to Use Unencrypted (No Security)	40
When to Use Static WEP	40
When to Use IEEE 802.1X	41
When to Use WPA Personal	42
When to Use WPA Enterprise	42
Enabling Station Isolation	43
Configuring Virtual Access Point Security	43
None (Plain-text)	45
Static WEP	45
Static WEP Rules	48
Example of Using Static WEP	48
IEEE 802.1X	49
WPA Personal	50
WPA Enterprise	52
Prohibiting the SSID Broadcast	53
Managing the Access Point	55
Setting the Wireless Interface	55
Using the 802.11h Wireless Mode	57
Configuring Radio Settings	58
Configuring Virtual Access Points	62
Controlling Access by MAC Authentication	66
Configuring a MAC Filter List on the AP	66
Configuring MAC Authentication on the RADIUS Server	67
Configuring Load Balancing	68
Configuring Access Point Services	69
Configuring Quality of Service (QoS)	69
Understanding QoS	69
QoS and Load Balancing	69
802.11e and WMM Standards Support	70
QoS Queues and Parameters to Coordinate Traffic Flow	70
QoS Queues and Diff-Serve Code Points (DSCP) on Packets	70
EDCF Control of Data Frames and Arbitration Interframe Spaces	71
Random Backoff and Minimum / Maximum Contention Windows	72
Packet Bursting for Better Performance	73
Transmission Opportunity (TXOP) Interval for Client Stations	73
802.1p and DSCP tags	73
Configuring QoS Settings	75
Enabling the Network Time Protocol Server	79
Enabling or Disabling a Network Time Protocol (NTP) Server	80
Maintaining the Access Point	81
Managing the Configuration File	81
Resetting the Factory Default Configuration	82
Saving the Current Configuration to a Backup File	83
Restoring the Configuration from a Previously Saved File	83
Rebooting the Access Point	85
Upgrading the Firmware	85
Configuring the Access Point for Managed Mode	87
Transitioning Between Modes	87
Configuring Managed Access Point Settings	88
Viewing Managed AP DHCP Information	89
Viewing Access Point Status	91
Viewing Interface Status	91
Ethernet (Wired) Settings	92
Wireless Settings	92
Viewing Events Logs	92
Configuring Persistent Logging Options	93
Configuring the Log Relay Host for Kernel Messages	94
Example of Using Linux syslogd	94
Enabling or Disabling the Log Relay Host on the Events Page	95
Viewing Transmit and Receive Statistics	95
Viewing Client Association Information	97
Link Integrity Monitoring	98
Viewing Neighboring Access Points	98
Wireless Client Settings and RADIUS Server Setup	101
Accessing Wireless Client Security Settings	102
Configuring a Client to Access an Unsecure Network	104
Configuring Static WEP Security on a Client	104
Configuring WPA/WPA2 Personal on a Client	106
Using an External Authentication Server	108
Configuring IEEE 802.1X Security on a Client	108
IEEE 802.1X Client Using EAP/TLS Certificate	108
Configuring WPA/WPA2 Enterprise (RADIUS)	111
WPA/WPA2 Enterprise (RADIUS) Client Using EAP/PEAP	111
WPA/WPA2 Enterprise (RADIUS) Client Using EAP-TLS Certificate	113
Configuring the RADIUS Server for Authentication	116
Obtaining a TLS-EAP Certificate for a Client	119
Configuring the RADIUS Server for VLAN Tags	122
CLI for AP Configuration	125
How to Access the Access Point CLI	125
Telnet Connection to the AP	125
SSH Connection to the AP	126
Commands and Syntax	127
Using the get Command	128
Using the set Command	128
Using the add Command	129
Using the remove Command	129
Additional CLI Commands	130
Getting Help on Commands at the CLI	130
Tab Completion	130
Keyboard Shortcuts	131
Interface Naming Conventions	132
Saving Configuration Changes	133
Access Point CLI Commands	134
Configuring Basic Settings	134
Status	135
Ethernet Settings	136
Wireless Interface	137
Radio Settings	138
Virtual Access Points	139
Set Security to Static WEP	140
Set Security to IEEE 802.1X	142
Set Security to WPA/WPA2 Personal (PSK)	143
Set Security to WPA/WPA2 Enterprise (RADIUS)	144
Managed Access Point	146
IEEE 802.1X Supplicant Authentication	147
Quality of Service	147
Time	149
System Management	150
CLI Classes and Properties Reference	150

Match case Limit results 1 per page

Glossary

161

Lease Time

The

Lease Time

specifies the period of time the

DHCP

Server gives its clients an

IP Address

and

other required information. When the lease expires,

the client must request a new lease. If the lease is set

to a short span, you can update your network

information and propagate the information provided

to the clients in a timely manner.

LLC

The

Logical Link Control

(LLC) layer controls frame

synchronization, flow control, and error checking. It

is a higher level protocol over the

PHY

layer,

working in conjunction with the

MAC

layer.

MAC

The

Media Access Control

(MAC) layer handles

moving data packets between

NIC

s across a shared

channel. It is a higher level protocol over the

PHY

layer. It provides an arbitration mechanism in an

attempt to prevent signals from colliding.

It uses a hardware address, known as the

MAC

address

, that uniquely identifies each node of a

network.

IEEE 802

network devices share a common

48-bit MAC address format, displayed as a string of

twelve (12) hexadecimal digits separated by colons,

for example

FE:DC:BA:09:87:65

Managed Mode

In Managed Mode, the D-Link Access Point is part

of the D-Link Unified Wired/Wireless Access

System, and you manage it by using the D-Link

Unified Switch. If an AP is in Managed Mode, the

Administrator Web UI is disabled.

MDI and MDI-X

Medium Dependent Interface

(MDI) and

MDI

crossover

(MDIX) are twisted pair cabling

technologies for Ethernet ports in hardware devices.

Built-in twisted pair cabling and auto-sensing enable

connection between like devices with the use of a

standard Ethernet cable. (For example, if a wireless

access point supports MDI/MDIX, one can

successfully connect a PC and that access point with

an Ethernet cable rather than having to use a

crossover cable).

MIB

Management Information Base (MIB) is a virtual

database of objects used for network management.

SSID

agents along with other SNMP tools can be

used to monitor any network device defined in the

MIB.

MSCHAP V2

Microsoft Challenge Handshake Authentication

Protocol Version 2

(MSCHAP V2) provides

authentication for

PPP

connections between a

Windows-based computer and an

Access Point

other network access device.

MTU

The

Maximum Transmission Unit

is the largest

physical packet size, measured in bytes, that a

network can transmit. Any messages larger than the

MTU are fragmented into smaller packets before

being sent.

Multicast

sends the same message to a select group

of recipients. Sending an e-mail message to a mailing

list is an example of multicasting. In wireless

networks, multicast usually refers to an interaction in

which the access point sends data traffic in the form

IEEE 802.1X Frame

s to a specified set of client

stations (

MAC

addresses) on the network.

Some wireless security modes distinguish between

how unicast, multicast, and broadcast frames are

encrypted or whether they are encrypted.