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