CCNA ppt

PRESENTED BY:

SUMANT GARG
K.I.T.M Kurukshetra

It requires good
understanding of topics like
Internetworking Basics,
Internet Protocol, IP
This certification is earned upon Routing, Switching, Virtual
passing the ICND1 640-822 and
ICND2 640-816 exams. LAN, Security, NAT, Cisco
Examinees may take the exams Wireless Technologies,
The Cisco Certified Network separately or the single 640-802 IPV6 and WAN Protocols.
Associate certification is popular CCNA composite exam.
certification course that covers
skills necessary to administer
Cisco devices on small or
medium-sized networks.

NAT(Network
Project Router and Concept of
Devices Used IP Addressing Access Lists Address Switching
overview Routing Cloud
Translation)

REMOTE
CONNECTIVITY
USING FRAME - RELAY

Class-full addressing
• Class A(1-127)
• Class B(128-191) Class-less addressing
• Class C(192-223)
• CIDR(Classless Inter-Domain
• Class D(224-239) Routing)
• Class E(240-255) • FLSM(Fixed Length Subnet Masking)
• VLSM(Variable Length Subnet
Masking)

 Data is sent in form of packets between 2 end devices
 Routers are used to direct packet to its destination

Rip sends routing
It is the most easily
update messages at
confused protocol Router updates its
regular interval of
because rip like routing table to reflect
time and also when
protocols are many the new changes.
the network topology
on the internet.
changes.

It uses distance
vector algorithm
The maximum hop
which mathematically
count for rip is 15
compares routes to
and the
identify the best path
Administrative
to be chosen for a
Distance (AD) is 120.
particular destination
address.

Command Command’s purpose

Rtr(config)#router rip Enables RIP routing process

Rtr(config-router)#network Associates a network with a RIP routing process

Rtr#debug ip rip used to view real time RIP routing updates

Rtr(config-router)#passive-interface fa0/0 Prevent RIP updates from going out an interface

Rtr#show ip protocols Used to display timers used by RIP

 Frame Relay is packet-switched technology. Frame Relay
follows principle of packet-switched technology. Packet-
switched networks allow dynamically share the network
medium and the available bandwidth to the end to end
stations

 ACLs are lists of conditions that are applied to
traffic traveling across a router's interface. These
lists tell the router what types of packets to accept
or deny. Acceptance and denial can be based on
specified conditions.
 ACLs can be configured at the router to control
access to a network or subnet.
 ACLs must be defined on a per-protocol, per
direction, or per port basis.
 There are three types of ACLs
1. Standard
2. Extended
3. Named

1. Limit network traffic and increase network performance.
2. Provide traffic flow control.
3. Provide a basic level of security for network access.
4. Decide which types of traffic are forwarded or blocked at the
router interfaces. For example: Permit e-mail traffic to be routed, but
block all telnet traffic.
5. Allow an administrator to control what areas a client can access on
a network.
6. If ACLs are not configured on the router, all packets passing through
the router will be allowed onto all parts of the network.

NAT: Network Address Translator
NAT
Translates between local addresses and public ones
Many private hosts share few global addresses

Private Network Public Network
Uses private address range Uses public addresses
(local addresses)
Local addresses may not Public addresses are
be used externally globally unique

A network switch is a small hardware device that joins
multiple computers together within one Local Area
Network(LAN). Technically switches operate at Data-link
Layer. These are almost like HUBS. But unlike HUBS
network switches are capable of inspecting data as it is
recieved, determining the source and destination device
of each packet, and forwarding them appropriately.

 VLAN provides Virtual Segmentation of Broadcast Domain in
the network. The devices, which are member of same Vlan,
are able to communicate with each other.
 The devices of different Vlan may communicate with each
other with routing called Inter Vlan Communication.

 With the help of VTP, we can simplify the process of creating
Vlan. In multiple switches, we can configure one switch as VTP
server and all other switches will be configured as VTP client.
We will create Vlans on VTP server switch.

CCNA ppt

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