IP Unnumbered
Outline
This challenge involves the configuration of IP unnumbered on the serial ports. The objectives of this challenge are to:
Command
> en
# config t
(config)# int e0
(config-if)# ip address 159.44.31.9 255.255.240.0
(config-if)# no shut
(config-if)# int s0
(config-if)# ip unnumbered e0
(config-if)# no shut
(config-if)# int s1
(config-if)# ip unnumbered e0
(config-if)# no shut
Example
> en
# config t
(config)# int e0
(config-if)# ip address 159.44.31.9 255.255.240.0
(config-if)# no shut
(config-if)# int s0
(config-if)# ip ?
Interface IP
configuration subcommands:
access-group Specify access control for packets
accounting Enable IP accounting on this
interface
address Set the IP address of an interface
audit Apply IDS audit name
auth-proxy Apply authenticaton proxy
authentication authentication subcommands
bandwidth-percent Set EIGRP bandwidth limit
bgp BGP interface commands
broadcast-address Set the broadcast address of an interface
cef Cisco Express Fowarding
interface commands
cgmp Enable/disable CGMP
directed-broadcast Enable forwarding of directed broadcasts
dvmrp DVMRP interface commands
hello-interval Configures IP-EIGRP hello interval
helper-address Specify a destination address for UDP
broadcasts
hold-time Configures IP-EIGRP hold time
igmp IGMP interface commands
inspect Apply inspect name
irdp ICMP Router Discovery Protocol
load-sharing Style of load sharing
mask-reply Enable sending ICMP Mask Reply
messages
mrm Configure IP Multicast Routing
Monitor tester
mroute-cache Enable switching cache for incoming
multicast packets
mtu Set IP Maximum Transmission
Unit
multicast IP multicast interface commands
nat NAT interface commands
nhrp
NHRP interface subcommands
ospf OSPF interface commands
pgm PGM Reliable Transport
Protocol
pim PIM interface commands
policy Enable policy routing
probe Enable HP Probe support
proxy-arp Enable proxy ARP
rarp-server Enable RARP server for static arp
entries
redirects Enable sending ICMP Redirect
messages
rip Router Information Protocol
route-cache Enable fast-switching cache for
outgoing packets
rsvp RSVP interface commands
rtp RTP parameters
sap Session Advertisement Protocol
interface commands
sdr Session Directory Protocol
interface commands
security DDN IP Security Option
split-horizon Perform split horizon
summary-address Perform address summarization
tcp TCP header compression
parameters
unnumbered Enable IP processing without an
explicit address
unreachables Enable sending ICMP Unreachable
messages
verify Enable per packet validation
vrf VPN Routing/Forwarding
parameters on the interface
wccp WCCP interface commands
(config-if)# ip unnumbered e0
(config-if)# no shut
(config-if)# int s1
(config-if)# ip unnumbered e0
(config-if)# no shut