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CCNP Swtiching
cards to help study for CCNP exam
56
Computer Networking
Undergraduate 4
09/08/2010

Additional Computer Networking Flashcards

 


 

Cards

Term
What are the sections of an Enterprise Network
Definition
1. Core Backbone
2. Campus
3. Data Center
4. Branch/WAN
5. Internet Edge
Term
What is the campus part of the Enterprise Network
Definition
provides access to network communication services and resources to end users and devices
Term
What is the data center portion of the Enterprise Network
Definition
generally understood to be a facility used to house computing systems and associated components.
Term
Enterpise network can also be called what?
Definition
campus network
Term
What does the Branch/WAN protion of the Campus Network hold?
Definition
contains the routers, switches, and son to interconnect a main office to branch offices and interconnect multiple main sites
Term
What does the internet edge portion of the enterprise network contain?
Definition
portion of the network that encompasses the routers, switches, firewalls, and network devices that interconnect the enterprise network to the internet
Term
What are the 3 Campus designs?
Definition
1. Modular
2. Resilient
3. Flexibility
Term
Modular Campus Design features
Definition
easily supports growth and change.

uses building blocks called pods or moduals

scaling the network is eased by adding new moduales instead of complete designs
Term
Layer 2 networks are limited and do not achieve what characteristics?
Definition
1. Scalability
2. Security
3. Modularity
4. Flexibility
5. Resiliency
6. High Availability
Term
Hierarchical model for campus design
Definition
1. Access layer
2. Distribution Layer
3. Core Layer
Term
What does the access layer do int the hierarchical campus design?
Definition
grants user, server, or edge device access to the network.

very feature rich

security
access control
filters
management
Term
What does the distribution layer do in the hierarchical campus design?
Definition
aggregates the wiring closets, using switches to segment working-groups and isolate network problems in a campus environment.

aggregates WAN connections at the edge of the campus and provides an level of securtiy.

acts as a service and control boundary between access and core.
Term
Core layer of hierarchical campus design
Definition
high-speed backbone, designed to swtich packets ASAP.

connects other switches a mimimum of 10 gigibit ethernet.
Term
Hierarchical campus model is good because it
Definition
1. provides modularity
2. easier to understand
3. increases flexability
4. eases growth and scalability
5. provides for network predictability
6. Reduces troubleshooting complexity
Term
benifits to layer 3 switching
Definition

routed interface

security

routing

load balancing

traffic analyisis

Term
Disadvantages of Layer 3 switching
Definition

cost

port density

Term
campus design provides what five things?
Definition
security, flexability, scaleability, manageability, availability
Term
Layer 2 switching features
Definition

 Designed for near wire-speed performance

 

built using high-speed, specialized ASICs

 

Switches at low latency

 

single point of failure

 

bottle necks

 

some secuirty

 

Term
Layer 2 switching downfalls
Definition

not felxable

 

not modual

 

not resilant

Term
Layer 2 switching benifits
Definition

cheap

 

fast

 

easy to manage

Term
Define layer 2 switching
Definition
frames forwarded by the switch but not modified in anyway.
Term
Layer 3 switching support what protocols?
Definition
RIP, OSPF, EIGRP
Term
Layer 2 switching is what?
Definition
software based switching
Term
Layer 2 switching supports layer 3 functionality such as
Definition

IGMP snooping

 

QoS marking

Term
to do layer 3 switching you need to be able to what?
Definition

rewrite the frames.

 

validates teh integerity of he l3 packet header via l3 checklst

 

verifies and decrients packet TTL expiration

 

updates l2 CRC durring rewrite

 

updates forwarding statistics for network management apps

 

applies security contols and classification of serivice required

Term
catalyst 6500 family
Definition
  • scalable modular switch up to 13 slots
  • supports up to 16 10-gig eth ints per slot
  • up to 80 GBPS of bandwidth ber slot in current gen hardware
  • optionaly supports up to L7 features with specialized modules
  • intergrated redundant and high-available power supplies, fans, and supervisor engineers
  • Supports L3 Non-stop forwarding NSF
  • backward capability
Term
hardware-switching refers to?
Definition
teh act of pricessing packets at any layers 2 -7 via specialized hardware components referred to as application-specific intergrated ciruits (ASIC)
Term
types of traffic
Definition
  • network management
  • vioce (IP telephony)
  • IP Multicast
  • Normal Data
  • Scavenger class
Term
Client-Enterprise Edge applications
Definition
use servers on the enterprise edge to exchange data between the orgainzation and its public servers.
Term

IIN Intelligent Information Network three phases

 

(logical constructs)

Definition

intergrated trasnport

 

services

 

application

Term
SONA stands for what
Definition
service-orinented netowrk architecture
Term
Benifits of SONA
Definition
  • convergance, virtualization
  • cost savings
  • increased productivity
  • faster deployment of new services and applications
  • enhanced buisness process
Term
why do you need a core layer?
Definition
so you don't have to mesh the distrobution layer.
Term
  • Catalyst 4500 Family
Definition
  • found in distro layer or calapsed core
  • Scalable module switch with up to 10 slots
  • supports multipule 10 gig eth int per slot
  • supports cisco IOS
  • supports both L2 and L3 switching
  • optionaly supports intergrated redundant and high-avalilable power supplies and supervisor engines
Term
Catalyst 4948G, 3750, and 3560 family
Definition
  • available in variety of fixed port configs with up to 48 1 gbps access layer ports
  • suports Cisco IOS
  • Supports both L2 and L3 switching
  • Not architected with redundant hardware
Term
Catalyst 2000 family
Definition
  • Available in variety of fixed port configs with up to 48 1-gbps access layer ports and 10-gig ehth uplinks
  • supports Cisco IOS
  • Supports L2 switching
  • not architected with redundant hardware
Term
Nexus 7000 family
Definition
  • data center switch
  • modular switch with up to18 slots
  • supports up to 230 Gbps per slot
  • supports Nexus OS
  • 10-slot chassis is built on front-to-back airflow
  • supports redundant surpervisor engines, fans, and power supplies
Term
what are important considerations at the Distrobution level?
Definition

Availalbiity

 

Fast path recovery

 

load balancing

 

QoS

Term
What enhancements does the distrobution layer add to the campus network design?
Definition
  • aggregates access layer switches
  • segments the access layer for simplicity
  • summarizes routing to access layer
  • always dual-connected to upstream core layer
  • optionally applies packet filtering, security features, and QoS features
Term
What does the core layer do in the campus network?
Definition
  • aggregates multiple distor switches in the distro layer with the remainder of the network
  • provides the aggregation pints with redundancy through fast convergence and high availability
Term
what is considered a small network?
Definition
less than 200 end devices
Term
What is considered a medium network?
Definition
200 to 1000 end devices
Term
What is a large campus design?
Definition
more than 2000 end users
Term
What does PPDIOO stand for?
Definition

P - Prepare

P- Plan

D- Design

I - Implement

O- Operate

O- Optimize

Term

PPDIOO

 

Prepare means

Definition

establising organization requirements

 

developing work stratagy

 

proposing a high-level conceptual architecture

Term

PPDIOO

 

Plan means

Definition

identifing initial requierments based on goals, facilities, users needs

 

involves chariacterizing sites and assessing any existing networks

 

project a plan for helping managing tasks

Term

PPDIOO

 

Design means

Definition
initial requirements that were derived in the planning phase drive the activites of teh network design
Term

PPDIOO

 

Implement means

Definition
network is built or additional components are incorpprated according to the disign specifications
Term

PPDIOO

 

Operate means

Definition

is the final test of the appropiateness of teh design

 

involves maintaining network health throught day-to-day operations

 

Fault detection, correction, and performance monitoring

Term

PPDIOO

 

Optimize means

Definition

involves proactive management of the network

 

to identify and resove issues before the affect the organization.

Term
What are the main reason for applying a lifecycle approach to campus design
Definition
  • Lowering the total cost of network ownership
  • increasing network availabity
  • improving business agility
  • Speeding access to applications and services
Term
Ways a proper network lifecycle approach aids in lowering costs
Definition
  • identifing and falidating tech requirements
  • planning for infrastructure changes and resource requirements
  • develope a sound network design
  • accelerationg successfull implementation
  • improving efficancy of the network
  • reducing operating expeses
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