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45 Cards in this Set

  • Front
  • Back
Shared Ethernet Segments are saturated
40 % network utilization
WAN Links are saturated
70 % network utilization
Good response time is?
Less than 100ms
Acceptable segment broadcasts and multicasts
20%
Collisions on Ethernet Segments
less 0.1% of the packets
Router Utilization
5 min CPU utilization less than 75%
Output Queue drops
not exceeded 100 in an hour
input Queue drops
not exceeded 50 in an hour
buffer misses
not exceeded 25 in an hour
ignored packets
has not exceeded 10 in an hour on any interface
Design Methodology Steps
Identify the requirements
Characterize the existing network
Design the topology and network solutions
Plan the implementation
Build a pilot or prototype network
document the design
implement and verify the design
Monitor and optionally redesign
PDIOO Process
Plan
Design
Implement
Operation
Optimization
Retirement
OSI Stack
Physical
Data Link
Network
Transport
Session
Presentation
Application
Hierarchical Design
Access
Distribution
Core
Enterprise Composite Network Model
Enterprise Campus
Enterprise Edge
Service Provider Edge
Enterprise Campus Modules
Campus Infrastructure (access, distribution, Backbone/Core)
Network Management
Server Farm
Edge Distribution
Network Management
OTP (one time password) Server
Access Control Server
Network Monitoring
IDS Director
Syslog
System Admin
Server Farm
DNS, Email, Application, File and print
Call Mnager
Content Networking
Enterprise Edge functional Area
E-Commerce
Internet connectivity module
Remote Access and VPN
WAN
e-Commerce Module
Web servers
Application
Database
Firewall
NIDS
Multilayer switch wth IDS
Internet Connectivity
SMTP Mail servers
DNS Servers
Public servers - FTP, HTTP
RemoteAccess and VPN
Dial in Access
VPN
Firewalls
L2 Switches
NIDS Appliances
WAN
FR, ATM, SONET, DSL
QoS
SP Edge
SP
PSTN
Frame Relay/ATM
classful routing
flat no areas
not scalable
RIPv1, IGRP
Classless routing
Hierarchical
Can use hellos to maintain neighbor relationships
OSPF, ISIS
RIPv2, flat but classless
EIGRP, flat, but classless and fast
ODR
Dynamic configuration of static routes for hub and spoke to remote offices
uses CDP
no routing protocol on spokes
supports VLSM
proprietary Cisco
RIPv2 vs. RIPv1
supports VLSM
uses multicast for updates
faster convergence
manual route summarization
authentication of routing data
still uses hope count for metric
hop limit of 15
EIGRP
same metric as IGRP
Supports VLSM
Distance Vetor
same features as link state
triggered updates no periodic hellos
stateful routing algorithm is Diffusing Update Algorithm
OSPF
Based on RFC
Link state
VLSM
fast convergence
improved path calculation Shortest path first
hierarchical with Areas
metric based on bandwidth
IS-IS
Link state
ISO and IP at layer 3
areas and backbone
level 1 routers are internal to areas
level 2 routers are used for interconnecting areas
more scalable than OSPF and EIGRP
fast convergence
BGP
External rotuering protocol
IANA Autonomous Systems
similar to distance vector - attributes, not metrics
strategic routing policies
TCP
IBGP and EBGP
IBGP
within AS
neighbors do not need to be directly connected
IGP must still be used like OSPF
QoS propogation on BGP
MPLS VPNs - MP IBGP
Cisco Voice compression favorites
G.711 - 64k
G.729 - 8k
Identify QoS Methods
IP RTP Priority
Priority Queuing
Custom Queuing
Class-based Weighted Fair Queuing
Low Latency Queuing
Name typical Organizational Goals (5)
Improve Profit
Increase competitiveness
Improve customer support
Add new customer services
Increase productivity
Name typical Organizational Constraints (4)
Budget
Personnel
Scheduling
Policy (Vendor preference)
summary - Time, Money, people and policy
Technical Goals (6)
Performance
Availability
Manageability
Security
Adaptability
Scalability
(upgrade or modernize in the answer)
Technical Constraints (3)
Existing Equipment
Bandwidth availability
Application compatibility
(the word Legacy in the answer)
Elements of the Network Design Document
Introduction
Design Requirements
Existing Network Infrastructure
Design
Proof of Concept
Implementation Plan
Appendices
Summary Report results used to do what? (4)
- Describe the software features required in the network
- Describe possible problems in the existing network
- Identify the actions needed to prepare the network for the implementation of the required features
- Influence the customer requirements
What are Social Requirements
All about people.
Network Performance is? (3)
- Capacity
- Response Time
- Utilization
Network Services (many)
SNMP, Telnet, TFTP, TACACS+, RADIUS, IP, IPX, Routing Protocols, QoS, Dial-In/Out, Access Lists, DNS, IPSec
- Security, QoS, Routing
Network Topology
Devices, Encapsulations, Bandwidth