Change the username/password prompt with AAA

TACACS+ protocol introduced with the IOS AAA architecture had great provisions for customizing the whole login process (user-defined banners, prompts ...). Unfortunately, it never really took off and most AAA solutions deployed today rely on RADIUS servers that cannot control the login process itself (the RADIUS server can only check the username/password pair for validity).

To change the login prompts when using RADIUS servers, use the aaa authentication [bannerfail-messagepassword-promptusername-prompt] text configuration command.

For example, to introduce meaningful prompts when using one-time password solution, you could use something similar to this configuration:

aaa authentication banner #
Access to this router is protected with one-time passwords.

Send an e-mail to admin@nowhere.net if you need access.

#
aaa authentication fail-message #
Login failed. Wait at least 30 seconds and retry
#
aaa authentication password-prompt "Enter your PIN + one-time password:"
aaa authentication username-prompt "Enter your username:"

Note: the texts specified with the password-prompt and username-prompt options are one-line texts delimited with quotes, the parameters of the banner and fail-message options are multi-lined texts delimited with any character.

Consider the network shown above with the configuration on the three
routers as follows -

Router R1

interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface Serial2
ip address 12.1.1.1 255.255.255.0
!
router ospf 100
router-id 1.1.1.1
log-adjacency-changes
network 1.1.1.1 0.0.0.0 area 1
network 12.1.1.0 0.0.0.255 area 1

Router R2

interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
interface Serial2
ip address 12.1.1.2 255.255.255.0
!
router ospf 100
router-id 2.2.2.2
log-adjacency-changes
network 2.2.2.2 0.0.0.0 area 0
network 12.1.1.0 0.0.0.255 area 1
network 23.1.1.0 0.0.0.255 area 0

Router R3

interface Loopback0
ip address 3.3.3.3 255.255.255.255
!
interface Serial2
ip address 23.1.1.2 255.255.255.0
!
router ospf 100
router-id 3.3.3.3
log-adjacency-changes
redistribute connected subnets
network 23.1.1.0 0.0.0.255 area 0

Now consider the following output from the show ip ospf database database-summary command taken on router R1. The first command was issued with the configuration shown above and the subsequent outputs were taken after some configuration changes on the routers in the network which are not specified in this problem.

Output #1

R1#sh ip ospf database database-summary

           OSPF Router with ID (1.1.1.1) (Process ID 100)

Area 1 database summary
 LSA Type      Count    Delete   Maxage
 Router        2        0        0
 Network       0        0        0
 Summary Net   2        0        0
 Summary ASBR  1        0        0
 Type-7 Ext    0        0        0
   Prefixes redistributed in Type-7  0
 Opaque Link   0        0        0
 Opaque Area   0        0        0
 Subtotal      5        0        0

Process 100 database summary
 LSA Type      Count    Delete   Maxage
 Router        2        0        0
 Network       0        0        0
 Summary Net   2        0        0
 Summary ASBR  1        0        0
 Type-7 Ext    0        0        0
 Opaque Link   0        0        0
 Opaque Area   0        0        0
 Type-5 Ext    1        0        0
     Prefixes redistributed in Type-5  0
 Opaque AS     0        0        0
 Total         6        0        0
R1#

Output #2

R1#sh ip ospf database database-summary

           OSPF Router with ID (1.1.1.1) (Process ID 100)

Area 1 database summary
 LSA Type      Count    Delete   Maxage
 Router        2        0        0
 Network       0        0        0
 Summary Net   1        0        0
 Summary ASBR  0        0        0
 Type-7 Ext    0        0        0
   Prefixes redistributed in Type-7  0
 Opaque Link   0        0        0
 Opaque Area   0        0        0
 Subtotal      3        0        0

Process 100 database summary
 LSA Type      Count    Delete   Maxage
 Router        2        0        0
 Network       0        0        0
 Summary Net   1        0        0
 Summary ASBR  0        0        0
 Type-7 Ext    0        0        0
 Opaque Link   0        0        0
 Opaque Area   0        0        0
 Type-5 Ext    0        0        0
     Prefixes redistributed in Type-5  0
 Opaque AS     0        0        0
 Total         3        0        0
R1#

Output #3

R1#sh ip ospf database database-summary

           OSPF Router with ID (1.1.1.1) (Process ID 100)

Area 1 database summary
 LSA Type      Count    Delete   Maxage
 Router        2        0        0
 Network       0        0        0
 Summary Net   3        0        0
 Summary ASBR  0        0        0
 Type-7 Ext    0        0        0
   Prefixes redistributed in Type-7  0
 Opaque Link   0        0        0
 Opaque Area   0        0        0
 Subtotal      5        0        0

Process 100 database summary
 LSA Type      Count    Delete   Maxage
 Router        2        0        0
 Network       0        0        0
 Summary Net   3        0        0
 Summary ASBR  0        0        0
 Type-7 Ext    0        0        0
 Opaque Link   0        0        0
 Opaque Area   0        0        0
 Type-5 Ext    0        0        0
     Prefixes redistributed in Type-5  0
 Opaque AS     0        0        0
 Total         5        0        0
R1#

Your task in this problem is to look at the output and reverse engineer what config changes must have been done to cause the changes in the output shown above. Note that you have to specify what happened between output #1 and output #2 and then what happened between output #2 and output #3.

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