Section 5: IP and IOS Features (7 Points)

• Configure R4 to have a list of the following default domain names: ccie.com, rip.com, and isis.com.

If you configured this correctly as shown in Example 6-42, you have scored 1 point.

This task is accomplished configuring the ip domain-list command where you can define a list of default domain-names.

Example 6-42. R4 Domain Name and Domain List Configuration

 R4#sh run ! ip domain-list ccie.com ip domain-list rip.com ip domain-list isis.com ! 

• Assume you have on the LAN segment of BB1 a DNS server with an IP address of 130.200.10.200. Configure R3 so any host on VLAN_33 that needs to resolve a name server can reach the DNS server.

Here you will configure the IP help-address feature on R3-fa0/1 for clients on VLAN_33. Notice that the ip forward command enables the forwarding of UDP traffic port 53.

If you configured this correctly as shown in Example 6-43, you have scored 2 points.

Example 6-43. R3 IP Help Address Configuration

 R3#show run int fa0/1 ! interface FastEthernet0/1  ip address 160.10.33.3 255.255.255.0  ip helper-address 130.200.10.200  R3# 

• Configure on R1 an incoming banner to welcome the users connecting to use R1 via Telnet. Use the following messages:

  - Banner message: This is a lab exercise to help you in preparation for the CCIE Routing and Switching Lab Exam. Unauthorized access prohibited.
  
  

  - Message of the day: The router will go down at 6:00 PM today for a software upgrade
  
  

If you configured this correctly as shown in Example 6-44, you have scored 2 points.

Example 6-44. R1 Incoming Banner Configuration

 R1#sh run banner exec ^C  This is a Lab exercise to help you in preparation for the CCIE R&S lab exam.  Unauthorized access prohibited.  ^C banner motd ^C  The router will go down at 6pm today for a software upgrade ^C ! line vty 0 4  exec-timeout 0 0  password cisco  login  transport input telnet ! R1# 

• Configure R2 such that all attempts to reach or connect the Backbone 1 address 130.200.10.200 with source address of 160.10.32.0/24 will be seen as 130.200.10.15-20/24.

To achieve this task requires a configuration of a Dynamic Inside Source Translation. It is an application of NAT.

If you configured this correctly as shown in Example 6-45, you have scored 2 points.

Example 6-45. R2 Dynamic NAT Configuration

 R2#sh run | i ip nat ! ip nat pool BB1 130.200.10.15 130.200.10.20 netmask 255.255.255.0 ip nat inside source list 20 pool BB1 R2# ! R2#sh run int fa0/0 Building configuration... Current configuration : 148 bytes ! interface FastEthernet0/0  ip address 130.200.10.2 255.255.255.0  ip nat outside  speed auto  half-duplex end R2# ! R2#sh run int s0/0 Building configuration... Current configuration : 377 bytes ! interface Serial0/0  ip address 160.10.32.2 255.255.255.252  !  ip nat inside  ! access-list 20 permit 160.10.32.0 0.0.0.255 ! R2# ! R2# R2#show ip nat tra R2#sh ip nat translations Pro Inside global      Inside local       Outside local      Outside global --- 130.200.10.15      160.10.32.2        ---                --- R2# ! R2#show ip nat statistics Total active translations: 1 (0 static, 1 dynamic; 0 extended) Outside interfaces:   FastEthernet0/0 Inside interfaces:   Serial0/0 Hits: 90  Misses: 1 Expired translations: 0 Dynamic mappings: -- Inside Source [Id: 1] access-list 20 pool BB1 refcount 1  pool BB1: netmask 255.255.255.0         start 130.200.10.15 end 130.200.10.20         type generic, total addresses 6, allocated 1 (16%), misses 0 R2#