Frame Relay
523
An example of a production router running multiple subinterfaces is shown
next. Notice that the subinterface number matches the DLCI number. This is
not a requirement but helps in the administration of the interfaces. Also notice
that there is no LMI type defined, which means they are running either the
default of Cisco or using autodetect if running Cisco IOS version 11.2 or
newer. This configuration was taken from one of my customers' production
routers (used by permission). Notice that each interface is defined as a separate
subnet, separate IPX network, and separate AppleTalk cable range (Apple-
Talk is beyond the scope of this exam):
interface Serial0
no ip address
no ip directed-broadcast
encapsulation frame-relay
!
interface Serial0.102 point-to-point
ip address 10.1.12.1 255.255.255.0
no ip directed-broadcast
appletalk cable-range 12-12 12.65
appletalk zone wan2
appletalk protocol eigrp
no appletalk protocol rtmp
ipx network 12
frame-relay interface-dlci 102
!
interface Serial0.103 point-to-point
ip address 10.1.13.1 255.255.255.0
no ip directed-broadcast
appletalk cable-range 13-13 13.174
appletalk zone wan3
appletalk protocol eigrp
no appletalk protocol rtmp
ipx network 13
frame-relay interface-dlci 103
!
interface Serial0.104 point-to-point
ip address 10.1.14.1 255.255.255.0
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