Building Distribution Module

The goal of this module is to provide distribution layer services to the building switches; these include routing, quality of service (QoS), and access control. Requests for data flow into these switches and onto the core, and responses follow the identical path in reverse.

Key Devices

  • Layer 3 switches— aggregate Layer 2 switches in building module and provide advanced services

Figure B-8. Building Distribution Module: Detail

Threats Mitigated

  • Unauthorized access— attacks against server module resources are limited by Layer 3 filtering of specific subnets

  • IP spoofing— RFC 2827 filtering stops most spoofing attempts ...

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