layer 4-7

(redirected from L4-7)

layer 4-7

The two layers in a network packet that identify its content (for details about layers, see TCP/IP and OSI model). The bottom layers 1, 2 and 3 are the protocols that move a network packet from source to destination. Layers 4 and 7 identify the application that created the packets as well as the specifics of the request. For example, inspecting layer 4 can identify HTTP traffic (Web traffic), but inspecting layer 7 can determine what the HTTP request is for (see Web switch). See layer 4 switch and well-known port.


TCP/IP SWITCHING/ROUTING DECISIONSLayer and      ForwardingProtocol       DecisionInspected      Based on

  2 - Ethernet   MAC address

  3 - IP         Network address
  3 - IP         Service quality

  4 - TCP/UDP    Traffic type
      socket     (HTTP, FTP, etc.)

  7 - HTTP       HTTP request type
References in periodicals archive ?
In those workloads, L4-7 traffic processing needs are dramatically increasing across a range of applications such as load balancing, cyber security, traffic management, VXLAN classification, user based QoE, service-aware networking and more.
and cloud platforms that enable dynamic L4-7 security and application services
OpenArchitect, the control plane management software for silicon switch fabrics, delivers comprehensive L3 routing capabilities, L4-7 filtering, plus Class-of-Service features.
Caw Networks, the authority in L4-7 real-world capacity assessment for next-generation Internet infrastructure and equipment, today announced its success in penetrating the network infrastructure market in Japan.
Total L2-3 L4-7 Managed / Unmanaged Ethernet Switch Shipments (Ports in Thousands)
We continue to extend the breadth of our L4-7 protocol coverage by supporting testing for malicious traffic such as DDoS Attacks," said Roy Chua, director of product marketing for Spirent Communications.
Key Topics Covered: - Methodology - List of Tables: (Markets Examined Include) - L2-3 L4-7 Managed / Unmanaged Ethernet Switch - L2-3 Managed Ethernet Switch - L2 Managed Ethernet Switch - L3 Managed Ethernet Switch - FE L2-3 Managed Ethernet Switch - FE L2 Managed Ethernet Switch - FE L3 Managed Ethernet Switch - GE L2-3 Managed Ethernet Switch - GE L2 Managed Ethernet Switch - GE L3 Managed Ethernet Switch - L4-7 Ethernet Switch - Total Unmanaged Ethernet Switch - Unmanaged FE Switch
The E370LX replaces the E350GX as Coyote Point's intelligent, high performance L4-7 traffic load balancer targeted at mid-market applications for medium and small enterprise.
The Aptixia family consists of the IxNetwork(TM) application for L2-3 testing, the IxLoad(TM) application for L4-7 testing, and the IxScriptMate(TM) application for pre-built L2-7 tests.
Integrated data/control plane traffic generation and analysis for IPv4/v6 routing protocols, L2/L3 VPN, multicast, and L4-7 testing
The report, "10 GbE Emerges as GigE Dominates Switch Market" (#IN0501816LN), covers the worldwide Layer 2/3 managed Ethernet switch, L2 unmanaged Ethernet switch, and L4-7 Ethernet switch markets.