DRAG DROP
Drag the characteristics of the traditional campus network on the left to the most appropriate hierarchical network layer on the right.
Select and Place:
Explanation/Reference:
Explanation:
Access
. The most feature-rich part of the campus network
. Provides security, QoS, and IP Multicast to the network
Distribution
. Routing boundary (Dynamic, summarization, static)
. Enforces Policy within the network
Core
. High level of availability, scalability, and fast convergence
. Provides a limited set of services
Large-Building LANs
Large-building LANs are segmented by floors or departments. The building-access component serves one or more departments or floors. The buildingdistribution component serves one or more building-access components. Campus and building backbone devices connect the data center, buildingdistribution components, and the enterprise edge-distribution component. The access layer typically uses Layer 2 switches to contain costs, with more expensive Layer 3 switches in the distribution layer to provide policy enforcement. Current best practice is to also deploy multilayer switches in the campus and building backbone.
Cisco Enterprise Architecture Model
Core
. Fast transport
. High reliability
. Redundancy
. Fault tolerance
. Low latency and good manageability
. Avoidance of slow packet manipulation caused by filters or other processes
. Limited and consistent diameter
. Quality of service (QoS)
Distribution
. Policy-based connectivity
. Redundancy and load balancing
. Aggregation of LAN wiring closets
. Aggregation of WAN connections
. QoS
. Security filtering
. Address or area aggregation or summarization
. Departmental or workgroup access
. Broadcast or multicast domain definition
. Routing between virtual LANs (VLAN)
. Media translations (for example, between Ethernet and Token Ring)
. Redistribution between routing domains (for example, between two different routing protocols)
. Demarcation between static and dynamic routing protocols
Access
. Layer 2 switching
. High availability
. Port security
. Broadcast suppression
. QoS
. Rate limiting
. Address Resolution Protocol (ARP) inspection
. Virtual access control lists (VACL)
. Spanning tree
. Trust classification
Power over Ethernet (PoE) and auxiliary VLANs for VoIP
Cisco Press CCDA 640-864 Official Certification Guide Fourth Edition, Chapter 3