Transcript Router(config)

IS 340 Review
Router 101
Brigham Young University-Idaho
Network Layer Path Determination
Internal Configuration Components
Internal Components of a 2600
Router
External Connections on a 2600 Router
Connecting Console Interfaces
1.
2.
3.
4.
Configure terminal emulation software on the
PC for the following:
 The appropriate com port
 9600 baud
 8 data bits
 1 stop bit
 No parity
 No flow control
Connect a rollover cable to the router
console port (RJ-45 connector).
Connect the other end of the rollover cable
to the RJ-45 to DB-9 adapter
Attach the female DB-9 adapter to a PC.
Computer or Terminal Console
Connection
Modem Connection to Console or
Auxiliary Port
Router User Interface
Operating Environments
Steps in Router Initialization
Router User Interface Modes
The User Interface Error Indicator
Using Help
Using IOS Command history
Configuring a Router Name
A router should be given a unique name as
one of the first configuration tasks. This
task is accomplished in global
configuration mode using the following
commands:
Router(config)#hostname Tokyo
Tokyo(config)#
Configuring Router Passwords
Host Name Resolutions
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Host name resolution is the process
that a computer system uses to
associate a host name with an IP
address.
Host names, unlike DNS names, are
significant only on the router on
which they are configured.
Configuring Host Tables
Viewing the Host Table
LAB_A(config)#ip host LAB_A 192.5.5.1 205.7.5.1 201.100.11.1
LAB_A(config)#ip host LAB_B 219.17.100.2 199.6.13.1 201.100.11.2
LAB_A(config)#ip host LAB_C 223.8.151.1 204.204.7.1 199.6.13.2
LAB_A(config)#ip host LAB_D 210.93.105.1 204.204.7.2
LAB_A(config)#ip host LAB_E 210.93.105.2
LAB_A(config)#
LAB_A#show hosts
Default domain is not set
Name/address lookup uses domain service
Name servers are 255.255.255.255
Host
LAB_B
199.6.13.1
LAB_C
204.204.7.1
Flags
Age Type
(perm, OK) 0
IP
Address(es)
219.17.100.2
(perm, OK)
201.100.11.2
223.8.151.1
0
IP
LAB_E
LAB_A
(perm, OK)
(perm, OK)
0
0
IP
IP
LAB_D
204.204.7.2
LAB_A#
(perm, OK)
0
IP
199.6.13.2
210.93.105.2
192.5.5.1 205.7.5.1
201.100.11.1
210.93.105.1
Using the copy Command
Using the copy tftp runningconfig Command
What are ACLs?
• ACLs are lists of instructions you apply to
a router's interface to tell the router what
kinds of packets to accept and what kinds
to deny.
ACLs must be defined on a per-protocol, per
direction, or per port basis
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ACL must be defined for each
interface
ACL must be defined for each
protocol enabled on the interface
ACLs control traffic in one direction
at a time on an interface
How ACLs Work
How ACL’s Work
Protocols with ACLs Specified by
Numbers
Wildcard Masks
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Don’t confuse with subnet masks
0 mean match with IP number
255 means accept any number in
this range
Standard ACLs
Extended ACLs
Extended IP Access List Examples
(continued)
Placing ACLs
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Standard ACLs should be placed close to the
destination.
Extended ACLs should be placed close to the
source.