Medias Mediatrix 1204, Справочное руководство

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VLAN Reference Manual (SIP Version)
Mediatrix 1204 267
For more information, please refer to the MIB Reference manual.
VLAN
You can set various VLAN parameters to control user priority.
You can also set these parameters via the web interface, as described in “802.1q Configuration” on page 93 .
X
To enable the VLAN configuration:
1. In the qosVlanIeee8021q group of the qosMIB , locate the qosVlanIeee8021qTaggingEnable
variable.
2. Set the value of this parameter to enable .
The VLAN configuration is enabled.
3. Locate the following variables:
• qosVlanIeee8021qVirtualLanID
• qosVlanIeee8021qDefaultUserPriority
4. Set the value of these variables.
5. Restart the Mediatrix 1204 so that the changes may take effect.
For more information, please refer to the MIB Reference manual.
VLANs
VLANs are created with standard Layer 2 Ethernet. A VLAN Identifier (VID) is associated with each
VLAN. VLANs offer the following benefits:
• VLANs are supported over all IEEE 802 LAN MAC protocols, and over shared media LANs as
well as point-to-point LANs.
• VLANs facilitate easy administration of logical groups of stations that can communicate as if
they were on the same LAN. They also facilitate easier administration of moves, adds, and
changes in members of these groups.
• Traffic between VLANs is restricted. Bridges forward unicast, multicast, and broadcast traffic
only on LAN segments that serve the VLAN to which the traffic belongs.
The VLAN field in the Ethernet file is located after both destination and source addresses:
0 1
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 (byte)
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
| Dest Addr | Src Addr | VLAN | Type/Length | ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
The VLAN field is separated as follows:
0 (bit) 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| 0x8100 | Pri |T| VID |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
For both signalling and media packets, the VLAN priority section is configurable independently.