802.1q

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802.1q

An IEEE standard for providing VLAN identification and quality of service (QoS) levels. Four bytes are added to an Ethernet frame, increasing the maximum frame size from 1518 to 1522 bytes. Three bits are used to allow eight priority levels (QoS) and 12 bits are used to identify up to 4096 VLANs. See virtual LAN.
References in periodicals archive ?
IEEE 802.11ak provides protocols, procedures, and managed objects that enhance the ability of IEEE 802.11 media to provide internal connections as transit links within IEEE 802.1Q bridged networks, and wireless connectivity for fixed, portable, and moving stations within a local area.
The new SATELLAR XT 5RC has now more IP features; Redundant routing, VRRP (RFC 5798), VLAN (IEEE 802.1Q), QoS and Firewall for additional security.
It supports Ethernet virtual connections for IEEE 802.1Q VLAN tagging, 802.1ad or "QinQ," Resilient Ethernet Protocol, 802.3ad Link Aggregation Bundles, Layer 2 Protocol Tunneling (L2PT), and Ethernet over MPLS (EoMPLS), among other features.
* Fixed managed versions with a configuration EEPROM tailored to the application's requirements for the unimanaged switches including features such as 802.lp priority and port-based priority, port-based VLAN or IEEE 802.1q VLAN IDs.
IEEE 802.1q virtual LAN (VLAN) management, including double VLAN tagging and VLAN tunneling, supports network security and segmentation.
Look for standards-based devices that incorporate the IEEE 802.1Q standard.
The OpENSolO 24G system supports features ideally suited for Gigabit-to-the-desktop applications, including IEEE 802.1Q VLANs, 802.1p packet prioritization for Quality of Service, as well as Layer 3 aware multicasting, access control and priority detection for Differentiated Services (DiffServ).
The ECS3810-26T supports Layer 2 VPN by use of Q-in-Q in which an IEEE 802.1Q tag from a customer VLAN is encapsulated in a second IEEE 802.1Q tag from a service provider network.
VLAN Tagging (IEEE 802.1Q): A networking standard which allows multiple-bridged networks to transparently share the same physical network link without leakage of information between networks.
While not the first IEEE specifications to address virtual data centers, bg and bh are amendments to the IEEE 802.1Q specification for virtual LANs and are under the purview of the organization's 802.1 Data Center Bridging and Interworking task groups.