Specifications

Chapter 9 - Miscellaneous Configuration Administration Manual (SIP/MGCP Version)

AT-VP504E FXS 66

2. Set the value of these parameters to 1 = Enable.

The corresponding user priority configuration is enabled.

3. Locate the following attributes under the

interfaceQoSGroup

of the Provisioning MIB:

• interfaceQoSSignalingIeee8021QUserPriority

• interfaceQoSMediaIeee8021QUserPriority

These attributes are 1 octet scalar ranging from 0 to 7. The

802.1q default priority value should be 6 for both signaling

and media packets.

For more information, please refer to the

MIB Reference

manual.

VLAN You can set various VLAN parameters that will allow you to control

user priority.

VLANs

VLANs are created with standard Layer 2 Ethernet. A VLAN Identifier (VID) is associated with each

VLAN. VLANs aim to 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.

• As far as possible, VLANs maintain compatibility with existing bridges and end stations.

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)

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-

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.