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“querier” and assumes responsibility for keeping track of group membership.
IGMP Snooping
Listening to IGMP Query and IGMP Report packets transferred between IP Multicast Routers and
IP Multicast host groups to identify IP Multicast group members.
IGMP Query
On each subnetwork, one IGMP-capable device will act as the querier — that is, the device that
asks all hosts to report on the IP multicast groups they wish to join or to which they already belong.
The elected querier will be the device with the lowest IP address in the subnetwork.
IP Multicast Filtering
It is a
feature to allow or deny the Client to add the specified multicast group.
Multicast Switching
A process whereby the switch filters incoming multicast frames for services forwhich no attached
host has registered, or forwards them to all ports contained within the designated multicast group.
Layer 2
Data Link layer in the ISO 7-Layer Data Communications Protocol. This is related directly to the
hardware interface for network devices and passes on traffic based on MAC addresses.
Link Aggregation
See Port Trunk.
Management Information Base (MIB)
An acronym for Management Information Base. It is a set of database objects that contains
information about a specific device.
MD5 Message-Digest Algorithm
An algorithm that is used to create digital signatures. It is intended for use with 32 bit machines
and is safer than the MD4 algorithm, which has been broken. MD5 is a one-way hash function,
meaning that it takes a message and converts it into a fixed string of digits, also called a message
digest.
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 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)
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Содержание
- Gigabit smart switch 1
- Tl sg2216 tl sg2424 1
- Ce mark warning 2
- Copyright trademarks 2
- Fcc statement 2
- Safety notices 2
- Package contents 8
- Chapter 1 about this guide 9
- Conventions 9
- Intended readers 9
- Overview of this guide 9
- Appearance description 12
- Chapter 2 introduction 12
- Front panel 12
- Main features 12
- Overview of the switch 12
- Rear panel 13
- Chapter 3 login to the switch 15
- Configuration 15
- Chapter 4 system 17
- System info 17
- System summary 17
- Device description 19
- System time 19
- Daylight saving time 20
- System ip 21
- User manage 22
- User table 22
- User config 23
- Config restore 24
- System tools 24
- Config backup 25
- Firmware upgrade 25
- System reboot 26
- System reset 26
- Access control 27
- Access security 27
- Chapter 5 switching 29
- Port config 29
- Port mirror 30
- The following entries are displayed on this screen 31
- Port security 32
- Port isolation 34
- Lag table 35
- Static lag 36
- Traffic monitor 37
- Traffic summary 37
- Traffic statistics 39
- Mac address 40
- Address table 41
- Static address 42
- Dynamic address 43
- Filtering address 45
- Chapter 6 vlan 47
- Q vlan 48
- Vlan config 50
- Port config 52
- Configuration procedure 53
- Application example for 802 q vlan 54
- Chapter 7 spanning tree 56
- Stp config 61
- Port config 63
- Stp summary 63
- Mstp instance 65
- Region config 65
- Instance config 66
- Instance port config 67
- Global configuration procedure for spanning tree function 69
- Port protect 69
- Stp security 69
- Application example for stp function 72
- Tc protect 72
- Chapter 8 multicast 76
- Igmp snooping 78
- Snooping config 79
- Port config 80
- Vlan config 81
- Configuration procedure 83
- Multicast vlan 83
- Application example for multicast vlan 85
- Configuration procedure 85
- Multicast filter 86
- Ip range 87
- Port filter 87
- Configuration procedure 89
- Packet statistics 89
- Chapter 9 qos 91
- Diffserv 94
- Port priority 94
- Configuration procedure 95
- Schedule mode 95
- Configuration procedure 96
- Dscp priority 96
- P priority 96
- Configuration procedure 97
- Bandwidth control 98
- Rate limit 98
- Storm control 99
- Chapter 10 snmp 101
- Global config 103
- Snmp config 103
- Snmp group 104
- Snmp view 104
- Snmp user 106
- Snmp community 107
- Configuration procedure 109
- Notification 110
- History control 112
- Alarm config 113
- Event config 113
- Chapter 11 maintenance 116
- Cpu monitor 116
- System monitor 116
- Memory monitor 117
- Log table 118
- Local log 119
- Remote log 119
- Backup log 120
- Cable test 121
- Device diagnose 121
- Loopback 122
- Network diagnose 122
- Tracert 123
- Appendix a specifications 125
- Appendix b configuring the pcs 126
- Appendix c glossary 128
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