Airlive POE-GSH2404M handleiding
Handleiding
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Meanings of 802.1q tag fields
Field Length Name Analysis
TPID 2
bytes
Tag Protocol
Identifier to
describe the frame
type
It refers to the 802.1q Tag frame when the value
is 0x8,100, which will be discarded if relevant
equipment fails to receive it.
PRI 3 bits Frame Priority It ranges from 0 to 7, with the higher priority
represented by larger number. Data frame with
higher priority will be sent preferentially in case
of switch congestion.
CFI
1 bit
Canonical Format
Indicator to reveal
whether the MAC
address is classical
or not.
MAC address is classical when CFI is 0 and
non-classical when CFI is 1. It promotes the
compatibility between Ethernet and token ring.
CFI will be 0 in the Ethernet.
VID 12
bits
VLAN ID indicates
the VLAN to which
the frame belongs.
It ranges from 0 to 4,095, with 1 to 4,094 valid
since 0 and 4,095 are the protocol retention
values.
Packets sent by each switch supporting 802.1q protocol contain a VLAN ID to
indicate the VLAN to which the switch belongs. Therefore, Ethernet frames are divided into
two types as follows in a VLAN switching network:
● Tagged frame: it refers to the frame adding a 4-bit 802.1q Tag.
● Untagged frame: it refers to the original frame without a 4-bit 802.1q Tag.
Connected with other switches, Trunk interfaces mainly connect trunk links to allow the
VLAN frames to flow through.
Instructions for trunk interface configuration:
1. Click the “VLAN > VLAN > Port Setting” in the navigation bar, select the port and
“Edit” it to configure the attributes:
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Productinformatie
| Merk | Airlive |
| Model | POE-GSH2404M |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 72641 MB |
