Specifications

Serial Interface Configuration Examples
IC-132
Cisco IOS Interface Configuration Guide
!
interface Serial17
no ip address
shutdown
Interface serial 18 is the first high-speed serial interface of the second 2T16S module. Remote sites
on different subnets are dialing in to this interface with point-to-point and multipoint connections.
interface Serial18
description Frame relay sample
no ip address
encapsulation frame-relay
!
interface Serial18.1 point-to-point
description Frame relay subinterface
ip address 10.1.14.1 255.255.255.0
frame-relay interface-dlci 16
!
interface Serial18.2 point-to-point
description Frame relay subinterface
ip address 10.1.15.1 255.255.255.0
frame-relay interface-dlci 17
!
interface Serial18.3 point-to-point
description Frame relay subinterface
ip address 10.1.16.1 255.255.255.0
frame-relay interface-dlci 18
!
interface Serial18.5 multipoint
ip address 10.1.17.1 255.255.255.0
frame-relay map ip 10.1.17.2 100 IETF
This second high-speed serial interface is configured to connect a X.25 link. Serial interfaces 20
through 35 are the low-speed interfaces. However, some of the interfaces are not displayed in this
example.
interface Serial19
description X25 sample config
ip address 10.1.18.1 255.255.255.0
no ip mroute-cache
encapsulation x25
x25 address 6120000044
x25 htc 25
x25 map ip 10.1.18.2 6120170073
!
interface Serial20
ip address 10.1.19.1 255.255.255.0
!
interface Serial21
physical-layer async
ip unnumbered e0
encap ppp
async mode dedicated
async dynamic routing
ipx network 45
ipx watchdog-spoof
dialer in-band
dialer-group 1
ppp authentication chap
!
interface Serial22
no ip address
shutdown