Transcript Router Configuration

Router Configuration
Configuring interfaces
Configuration categories

Global configuration mode
– parameters set apply to all interfaces

Interface configuration
– sets parameters for selected interface
Router Interfaces

types
– serial; parallel
– most common router set-up has 2 of each
comparisons

designation
– S0,S1; E0,E1

communication
– serial to WAN, parallel to LAN

data rates
– serial range 10’s kbit/s to 2Mbit/s
– Parallel range 10/100Mbit/s common,
Gigabit increasingly used
considerations

data rate differential
– Gigabit WAN link unlikely

bandwidth v cost
– LAN bandwidth not usually an issue
– WAN bandwidth costly
Configuration tasks Serial port
 Task 1) - assign network address
 Task 2) - define encapsulation type
 Task 3) - define bandwidth
 Task 4) - assign ACL’s

Task 1  Assign
network addresses
– each interface has a unique network
address
– address must match remote
 CLI
command to assign network
address is
– Router (config-if)#ip address
nnn.nnn.nnn.nnn sss.sss.sss.sss
Task 2
define encapsulation type
 PPP most widely used encapsulation

– ppp, replacing slip as standard serial line
protocol; can encapsulate chap/pap
– slip uses PAP encapsulation, less secure
than CHAP
– CLI command to define encapsulation
type is
– Router (config-if)#encapsulation ppp
Task 3
– Define bandwidth
sets data transfer rate of WAN link
used by link-state routing protocols for
path determination
– CLI command to define bandwidth is
– Router (config-if)#bandwidth NNNNN
Task 4
– Assign ACL’s
can permit or deny specific users,
protocols, directions
 ACL’s created in Global config mode
 access-groups implemented on interface
basis

– CLI command to assign an accessgroup is
– Router (config-if)#ip access-group nnn
(in/out)
Finally..
Remember “no shutdown”

Brings interface into service once
configuration complete