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86 Cards in this Set
- Front
- Back
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Define enterprise |
A large business environment with many users, locations and systems |
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Define enterprise network |
A network that is used to support the business enterprise |
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All enterprise networks must (4) |
Support critical applications Support converged network traffic Support diverse business needs Provide centralized administrative control |
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What type of features can be found in enterprise class equipment? (2) |
Redundant power supplies Failover capabilities |
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Failover capabilities refers to |
the ability of a device to switch from a non-functioning module |
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3 layers of the hierarchical network design |
Access layer distribution layer core layer |
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access layer provides |
connectivity for the users. |
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distribution layer function |
forwards traffic from one local network to another |
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core layer function |
high speed backbone layer between dispersed networks |
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Difference between 2 tier and 3 tier hierarchical design |
Core and distribution layers are collapsed in the 2 tier network. You have access and core/distribution |
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Primary cisco enterpirse architecture modules include (4) |
enterprise campus enterprise edge service provider edge remote |
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Which layers comprise the enterprise campus |
all 3 layers of access, distribution and core |
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what does the access layer contain |
layer 2 or layer 3 switches |
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What occurs at the access level |
implementation of vlans and trunk links to the distribution layer |
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how does the distribution layer aggregate building access |
using layer 3 devices |
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what is performed at the distribution layer (3) |
routing access control QoS |
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What does the core layer module provide |
High speed interconnectivity between the distribution layer modules, data center server farms and the enterprise edge |
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What is the focus of design in the Enterprise Campus architecture (3) |
Redundancy fast convergence fault tolerance |
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2 submodules the the Enterprise Campus can include |
server farm and data center module services module |
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What do server farm and data center modules provide |
high speed connectivity and protection for servers |
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what does the network management system do |
monitors performance by monitoring device and network availability |
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type of services services modules provide access to (3) |
ip telephony wireless controller unified services |
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what does the enterprise edge consist of |
the internet vpn and wan modules connecting the enterprise with the service provider's network. |
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What does the enterprise edge do |
extends service to remote sites and enables them to use internet and partner resources |
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what does the service provider edge provide (3) |
internet public switches telephone network wan services |
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pstn stands for |
public switches telephone network |
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at which point are all packets examined to see if they will be let onto the enterprise network |
service provider edge |
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ecnim stands for |
enterprise composite network model |
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ids stands for |
intrusion detection system |
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ips dtands for |
intrusion prevention system |
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where can ids and ips be configured |
on the service provider edge or other edge device |
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failure domain |
the area of an network that is impacted when a critical device or network service experiencees problems |
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what determines the impact of a failure domain |
the function of the device that initially fails |
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what minimizes the chance of disruption in a network |
use of redundant links and reliable enterprise class equipment |
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How are routers or multilayer switces usually deployed |
in pairs |
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a switch block is |
a configuration of pairs of routers or multilayer switches with access layer switches evenly divided between them |
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4 recommendations for a basic network design strategy |
use expandable equipment include modules that can be added, upgraded, modified create hierarchical ipv4 or ipv6 limit broadcasts and filter unwanted traffic |
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3 methods for implementing redundancy |
installing duplicate equipment provide failover services for critical devices implementing redundant paths |
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stp stands for |
spanning tree protocol |
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what does stp do |
eliminates layer 2 loops when redundant links are used between switches |
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how does stp work |
provides a mechanism for disabling redundant paths in a switched network until the path is necessary such as in the case of failures |
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what does link aggregation allow |
an administrator to increase the amount of bandwidth between devices by creating one logical link made up of several physical links |
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etherchannel is a form of |
link aggregation |
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what does etherchannel use |
existing switch ports |
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Advantages of etherchannel (4) |
no additional expense, uses existing ports config done in etherchannel interface ensuring consistency throughout the links can load balance using several different methods |
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advantages of providing wireless connectivity (3) |
increased flexibility reduced costs ability to grow/adapt to changing requirements |
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routing protocols used in enterprise networks |
link-state |
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protocol with distance vector behaviors |
eigrp |
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alternate data pathway |
redundancy |
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protocol which uses a backbone area |
ospf |
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5 categories of switches for an enterprise network |
campus lan switches cloud managed switches data center switches service provider switches virtual networking |
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what do cloud managed switches enable |
virtual stacking of switches |
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characteristics a data center switch promotes (3) |
infrastructure scalability operational continuity transport flexibility |
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2 categories of service provider switches (2) |
aggregation switches ethernet access switches |
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describe aggregation switches |
carrier-grade ethernet switches that aggregate traffic at the edge of a network |
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common business considerations when selecting switch equipment (7) |
cost port density power reliability port speed frame buffers scalability |
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cost of a switch depends on (3) |
the number and speed of interfaces supported features expansion capability |
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port density iS |
number of ports on a switch |
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why is power a consideration when selecting a switch |
some access points require now use poe to power. if you have those, need to make sure the switch supports that. |
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reliability is |
continuous access |
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forwarding rates define |
the processing capabilities of a switch by rating how much data the switch can process per second |
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wire speed is |
data rate that each ethernet port on the switch is capable of attaining |
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why is wirespeed important to consider |
for example if a 48 port gb switch only has a forwarding rate of 32 gb, it cannot run at a full gb of wirespeed on all ports at the same time |
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PoE pass through allows |
a network administrator to power PoE devices connected to the switch as well as the switch itelf by drawing power from certain upstream switches |
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layers where are multilayer switches are usually found |
core and distribution |
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characteristics of a multilayer switch (4) |
ability to build a routing table supports a few routing protocols forwards IP packets at a rate close to that of Layer 2 forwarding |
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how fast interfaces will process ethernet frames |
forwarding rates |
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modular configuration is |
expansion of capacity and speed using upgradable line/port cards |
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fixed configuration is |
built in permanent interfaces and ports |
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stackable is |
ability to interconnect multiple switches to effectively manage them as one large switch |
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what layer is responsible for routing? |
distribution layer |
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what does the router use to route packets to the proper destination |
network portion of the destination ip address |
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some benefits of routers (4) |
provide broadcast containment connect remote locations group users logically provide enhanced security |
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how to routers enhance security |
they can be configured with access control lists to filter unwanted traffic |
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3 categories of routers |
branch network edge service provider |
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what do branch routers do |
optimize branch services on a single platform while delivering applications across branch and wan infrastructures |
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what do network edge routers do |
enable the network edge to deliver high performance, highly secure and reliable service uniting all areas of the network |
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what do service provider routers do |
used by service providers |
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2 methods for connecting a pc to the network |
in band out of band |
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out of band management is |
when a network connection is unavailable. need a console cable. used for initial configuration mainly |
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in band management is used for |
monitoring and making config changes to a device over a network connection |
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set console timeout |
R1(config-line)# exec-timeout |
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show ip protocols |
info about the routing protocols configured |
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show ip route |
displays routing table info |
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show ip ospf neighbor |
info about ospf neighbors that have been learned |
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show interfaces |
interface information of each port or a specific port |
