TP-Link TL-SL2218 TL-SL2218 V1 User Guide - Page 141

Network Time Protocol (NTP)

NTP provides the mechanisms to synchronize time across the network. The time servers operate

in a hierarchical-master-slave configuration in order to synchronize local clocks within the subnet

and to national time standards via wire or radio.

Port Authentication

See IEEE 802.1X.

Port Mirroring

A method whereby data on a target port is mirrored to a monitor port for troubleshooting with a

logic analyzer or RMON probe. This allows data on the target port to be studied unobstructively.

Port Trunk

Defines a network link aggregation and trunking method which specifies how to create a single

high-speed logical link that combines several lower-speed physical links.

Remote Authentication Dial-in User Service (RADIUS)

RADIUS is a logon authentication protocol that uses software running on a central server to

control access to RADIUS-compliant devices on the network.

Remote Monitoring (RMON)

RMON provides comprehensive network monitoring capabilities. It eliminates the polling required

in standard SNMP, and can set alarms on a variety of traffic conditions, including specific error

types.

Rapid Spanning Tree Protocol (RSTP)

RSTP reduces the convergence time for network topology changes to about 10% of that required

by the older IEEE 802.1D STP standard.

Secure Shell (SSH)

A secure replacement for remote access functions, including Telnet. SSH can authenticate users

with a cryptographic key, and encrypt data connections between management clients and the

switch.

Simple Network Management Protocol (SNMP)

The application protocol in the Internet suite of protocols which offers network management

services.

Simple Network Time Protocol (SNTP)

SNTP allows a device to set its internal clock based on periodic updates from a Network Time

Protocol (NTP) server. Updates can be requested from a specific NTP server, or can be received

via broadcasts sent by NTP servers.

Spanning Tree Algorithm (STA)

A technology that checks your network for any loops. A loop can often occur in complicated or

backup linked network systems. Spanning Tree detects and directs data along the shortest

available path, maximizing the performance and efficiency of the network.

Telnet

Defines a remote communication facility for interfacing to a terminal device over TCP/IP.

Transmission Control Protocol/Internet Protocol (TCP/IP)

Protocol suite that includes TCP as the primary transport protocol, and IP as the network layer

protocol.

Trivial File Transfer Protocol (TFTP)

A TCP/IP protocol commonly used for software downloads.

User Datagram Protocol (UDP)

UDP provides a datagram mode for packet-switched communications. It uses IP as the underlying

transport mechanism to provide access to IP-like services. UDP packets are delivered just like IP

packets – connection-less datagrams that may be discarded before reaching their targets. UDP is

useful when TCP would be too complex, too slow, or just unnecessary.

134

Section	Page
Package Contents	8
Chapter 1 About this Guide	9
1.1 Intended Readers	9
1.2 Conventions	9
1.3 Overview of This Guide	9
Chapter 2 Introduction	12
2.1 Overview of the Switch	12
2.2 Main Features	12
2.3 Appearance Description	12
2.3.1 Front Panel	12
2.3.2 Rear Panel	14
Chapter 3 Login to the Switch	15
3.1 Login	15
3.2 Configuration	15
Chapter 4 System	17
4.1 System Info	17
4.1.1 System Summary	17
4.1.2 Device Description	19
4.1.3 System Time	20
4.1.4 Daylight Saving Time	20
4.1.5 System IP	22
4.2 User Management	23
4.2.1 User Table	23
4.2.2 User Config	23
4.3 System Tools	25
4.3.1 Config Restore	25
4.3.2 Config Backup	25
4.3.3 Firmware Upgrade	26
4.3.4 System Reboot	27
4.3.5 System Reset	27
4.4 Access Security	27
Chapter 5 Switching	30
5.1 Port	30
5.1.1 Port Config	30
5.1.2 Port Mirror	31
5.1.3 Port Security	34
5.1.4 Port Isolation	36
5.2 LAG	37
5.2.1 LAG Table	37
5.2.2 Static LAG	39
5.3 Traffic Monitor	40
5.3.1 Traffic Summary	40
5.3.2 Traffic Statistics	41
5.4 MAC Address	43
5.4.1 Address Table	43
5.4.2 Static Address	45
5.4.3 Dynamic Address	46
5.4.4 Filtering Address	48
Chapter 6 VLAN	50
6.1 802.1Q VLAN	51
6.1.1 VLAN Config	53
6.1.2 Port Config	55
6.2 Application Example for 802.1Q VLAN	57
Chapter 7 Spanning Tree	59
7.1 STP Config	64
7.1.1 STP Config	64
7.1.2 STP Summary	66
7.2 Port Config	67
7.3 MSTP Instance	69
7.3.1 Region Config	69
7.3.2 Instance Config	70
7.3.3 Instance Port Config	71
7.4 STP Security	73
7.4.1 Port Protect	73
7.4.2 TC Protect	76
7.5 Application Example for STP Function	76
Chapter 8 Multicast	80
8.1 IGMP Snooping	82
8.1.1 Snooping Config	83
8.1.2 Port Config	84
8.1.3 VLAN Config	85
8.1.4 Multicast VLAN	87
8.2 Multicast IP	90
8.2.1 Multicast IP Table	91
8.2.2 Static Multicast IP	91
8.3 Multicast Filter	92
8.3.1 IP-Range	93
8.3.2 Port Filter	94
8.4 Packet Statistics	95
Chapter 9 QoS	97
9.1 DiffServ	100
9.1.1 Port Priority	100
9.1.2 802.1P Priority	101
9.1.3 DSCP Priority	102
9.1.4 Schedule Mode	104
9.2 Bandwidth Control	105
9.2.1 Rate Limit	105
9.2.2 Storm Control	107
Chapter 10 SNMP	109
10.1 SNMP Config	111
10.1.1 Global Config	111
10.1.2 SNMP View	112
10.1.3 SNMP Group	113
10.1.4 SNMP User	115
10.1.5 SNMP Community	116
10.2 Notification	118
10.3 RMON	120
10.3.1 History Control	121
10.3.2 Event Config	122
10.3.3 Alarm Config	123
Chapter 11 Maintenance	125
11.1 System Monitor	125
11.1.1 CPU Monitor	125
11.1.2 Memory Monitor	126
11.2 Log	127
11.2.1 Log Table	128
11.2.2 Local Log	129
11.2.3 Remote Log	129
11.2.4 Backup Log	130
11.3 Device Diagnostics	131
11.3.1 Cable Test	131
11.3.2 Loopback	132
11.4 Network Diagnostics	133
11.4.1 Ping	133
11.4.2 Tracert	134
Appendix A: Specifications	135
Appendix B: Configuring the PCs	136

TP-Link TL-SL2218 TL-SL2218 V1 User Guide - Page 141

Transmission Control Protocol/Internet Protocol TCP/IP

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