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Security Target Version 1.02, 08/16/2013

2.2 TOE Architecture

The HP Network switches share a common software code base, called Comware. Comware is special purpose

appliance system software that implements a wide array of networking technology, including: IPv4/IPv6 dual-

stacks, a data link layer, layer 2 and 3 routing, Ethernet switching, VLANs, Intelligent Resilient Framework (IRF),

routing, Quality of Service (QoS), etc. The evaluated version of Comware is 5.2. Comware runs on a variety of

underlying architectures including VxWorks, Linux, pSOS and Windows; however, the only underlying architecture

found in the evaluated configuration is Linux.

The Comware v5.2 architecture can be depicted as follows:

Comware V5 Architechture

SCP GCP

DFP

SSP

SMP

DRIVERS & BSP

HARDWARE

Figure 1 Comware v5.2 Architecture

 General Control Plane (GCP) – The GCP fully supports the IPv4 and IPv6 protocol stacks and provides

support to a variety of IPv4/IPv6 applications including routing protocols, voice, WAN link features, and

QoS features.

 Service Control Plane (SCP) – The SCP supports value-added services such as connection control, user

policy management AAA, RADIUS, and TACACS+.

 Data Forwarding Plane (DFP) – The DFP underpins all network data processing. The forwarding engine

is the core of the DFP.

 System Management Plane (SMP) – The SMP provides user interfaces for device management. This

includes implementations for Command line - CLI (SSHv2) and Management Information Base -

management options. The Management Information Base management option is excluded from the TOE.

 System Service Plane (SSP) – The SSP provides a foundation layer that implements primitives on which

the other planes rely, for example, memory management, task management, timer management, message

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HP A-Series Spezifikationen Seite 11