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（3） GENERAL: The GENERAL
port can be added in multiple VLANs and set various egress
rules according to the different VLANs. The default egress rule is UNTAG. The PVID can
be set as the VID number of any VLAN the port belongs to.
PVID
PVID (Port Vlan ID) is the default VID of the port. When the switch receives an un-VLAN-tagged
packet, it will add a VLAN tag to the packet according to the PVID of its received port and forward
the packets.
When creating VLANs, the PVID of each port, indicating the default VLAN to which the port
belongs, is an important parameter with the following two purposes:
（1） When the switch receives an un-VLAN-tagged packet, it will add a VLAN tag to the packet
according to the PVID of its received port
（2） PVID determines the default broadcast domain of the port, i.e. when the port receives UL
packets or broadcast packets, the port will broadcast the packets in its default VLAN.
Different packets, tagged or untagged, will be processed in different ways, after being received by
ports of different link types, which is illustrated in the following table.
Receiving Packets
Port Type
Untagged Packets Tagged Packets
Forwarding Packets
Access
If the VID of packet is
the same as the PVID
of the port, the packet
will be received.
If the VID of packet is
not the same as the
PVID of the port, the
packet will be dropped.
The packet will be
forwarded after removing its
VLAN tag.
Trunk
The packet will be
forwarded with its current
VLAN tag.
General
When untagged
packets are
received, the port
will add the default
VLAN tag, i.e. the
PVID of the ingress
port, to the packets.
If the VID of packet is
allowed by the port, the
packet will be received.
If the VID of packet is
forbidden by the port,
the packet will be
dropped.
If the egress rule of port is
TAG, the packet will be
forwarded with its current
VLAN tag.
If the egress rule of port is
UNTAG, the packet will be
forwarded after removing its
VLAN tag.
Table 6-1 Relationship between Port Types and VLAN Packets Processing
IEEE 802.1Q VLAN function is implemented on the VLAN Config and Port Config pages.
42
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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