CCNA LAN Switching and Wirless Chapter 1
Access Layer
Core Layer
Data-Link Layer
Network Layer
Physical Layer
Application
Access
Distribution
Network
Core
Core only
Distribution and core
Access and distribution
Access, distribution, and core
A slim-line chassis
Allows interconnection of switches on redundant backplane
Defined physical characteristics
Flexible characteristics
Scalability
Security
Redundancy
Maintainability
Application
Access
Distribution
Network
Core
Power over Ethernet
Quality of service
Switch port security
Inter-vlan routing
Implement Layer 3 switching on S1 to reduce the packet processing load on D1 and D2. Install all security processing on S1 to reduce network traffic load.
Configure port security options on S1. Use Layer 3 access control features on D1 and D2 to limit access to the HR servers to just the HR subnet.
Move all HR assets out of the data center and connect them to S1. Use Layer 3 security functions on S1 to deny all traffic into and out of S1.
Perform all port access and Layer 3 security functions on C1.
Local analog phone service can be completely outsourced to cost-effective providers.
The Ethernet VLAN structure is less complex.
A shared infrastructure is created resulting in a single network to manage.
QoS issues are greatly reduced.
There is less bandwidth competition between voice and video streams.
Power over Ethernet
Load balancing across redundant trunk links
Redundant components
Quality of Service
Link aggregation
PoE
Redundancy
Aggregation
Access lists
Layer 1
Layer 2
Layer 3
Layer 4
Layer 5
Convergence
Redundant links
Link aggregation
Network diameter
Port security
Security policies
10 Gigabit Ethernet
Quality of service (QoS)
Hot-swappable hardware
Forwarding rate
Traffic flow analysis
Expected future growth
Number of required core connections
Number of hubs that are needed in the access layer to increase performance
Core layer
Distribution layer
Access layer
Entry layer
Low port density
High forwarding rate
High latency level
Support link aggregation
Predefined number of ports
Security policies
Power over Ethernet
Switch port security
Quality of service
Layer 3 functionality
StackWise technology allows up to eight ports to be bound together to increase available bandwidth.
StackWise technology allows the switch to deliver power to end devices by using existing Ethernet cabling.
StackWise technology allows the switch capabilities and ports to be expanded by the addition of line cards.
StackWise technology allows up to nine switches to be interconnected via the use of a fully redundant backplane.
Layer 1
Layer 2
Layer 3
Layer 4
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Here's an interesting quiz for you.