R1#sh run
Building configuration...

Current configuration : 1076 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R1
!
logging queue-limit 100
!
memory-size iomem 10
ip subnet-zero
no ip routing
!
!
no ip domain lookup
!
mpls ldp logging neighbor-changes
!
!
!
!
!
!
!
!
!
no voice hpi capture buffer
no voice hpi capture destination
!
!
mta receive maximum-recipients 0
!
!
!
!
interface Ethernet0/0
 no ip address
 no ip route-cache
 shutdown
 half-duplex
!
interface Serial0/0
 no ip address
 encapsulation frame-relay
 no ip route-cache
 no ip mroute-cache
 no fair-queue
 frame-relay map bridge 103 broadcast
 bridge-group 1
!
interface Ethernet0/1
 no ip address
 no ip route-cache
 half-duplex
 bridge-group 1
!
interface Serial0/1
 no ip address
 no ip route-cache
 clockrate 64000
 bridge-group 1
!
no ip http server
ip classless
!
!
!
!
!
bridge 1 protocol ieee
call rsvp-sync
!
!
mgcp profile default
!
dial-peer cor custom
!
!
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
 privilege level 15
 no login
!
!
end

R1#
RACK14AS>2
[Resuming connection 2 to r2 ... ]
R2(config-if)#
R2(config-if)#^Z
R2#sh run
Building configuration...

*Mar  1 04:48:30.728: %SYS-5-CONFIG_I: Configured from console by console
Current configuration : 1571 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R2
!
logging queue-limit 100
!
memory-size iomem 10
ip subnet-zero
!
!
no ip domain lookup
!
ip audit notify log
ip audit po max-events 100
mpls ldp logging neighbor-changes
!
!
!
isdn switch-type basic-ni
!
!
!
!
!
!
!
!
!
no voice hpi capture buffer
no voice hpi capture destination
!
!
mta receive maximum-recipients 0
!
bridge crb     <---------------- for testing only
!
!
!
interface FastEthernet0/0
 no ip address
 shutdown
 duplex auto
 speed auto
!
interface BRI0/0
 no ip address
 dialer map bridge broadcast 5551143
 dialer-group 1
 isdn switch-type basic-ni
 isdn spid1 5551142
 isdn spid2 5552142
 bridge-group 1
!
interface FastEthernet0/1
 ip address 200.1.1.2 255.255.255.0
 no ip proxy-arp
 duplex auto
 speed auto
!
interface Serial1/0
 no ip address
 shutdown
!
interface Serial1/1
 no ip address
 bridge-group 1
!
interface Serial1/2
 no ip address
 encapsulation ppp
 clockrate 128000
 bridge-group 1
!
interface Serial1/3
 no ip address
 shutdown
!
interface Serial1/4
 no ip address
 shutdown
!
interface Serial1/5
 no ip address
 shutdown
!
interface Serial1/6
 no ip address
 shutdown
!
interface Serial1/7
 no ip address
 shutdown
!
no ip http server
no ip http secure-server
ip classless
!
!
!
dialer-list 1 protocol bridge permit
!
!
bridge 1 protocol ieee
call rsvp-sync
!
!
mgcp profile default
!
!
!
dial-peer cor custom
!
!
!
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
 privilege level 15
 no login
!
!
end

R2#
RACK14AS>3
[Resuming connection 3 to r3 ... ]

*Ma
R3#sh run
Building configuration...

Current configuration : 1837 bytes
!
version 12.2
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname R3
!
logging queue-limit 100
!
ip subnet-zero
no ip routing
!
!
no ip domain lookup
!
ip audit notify log
ip audit po max-events 100
mpls ldp logging neighbor-changes
!
!
!
isdn switch-type basic-ni
!
!
!
!
!
!
!
!
!
no voice hpi capture buffer
no voice hpi capture destination
!
!
mta receive maximum-recipients 0
!
!
!
!
interface FastEthernet0/0
 no ip address
 no ip route-cache
 duplex auto
 speed auto
 bridge-group 1
!
interface BRI0/0
 no ip address
 no ip route-cache
 dialer map bridge broadcast 5551142
 dialer-group 1
 isdn switch-type basic-ni
 isdn spid1 5551143
 isdn spid2 5552143
 bridge-group 1
!
interface FastEthernet0/1
 no ip address
 no ip route-cache
 shutdown
 duplex auto
 speed auto
!
interface Serial1/0
 no ip address
 encapsulation frame-relay
 no ip route-cache
 no ip mroute-cache
 shutdown
 frame-relay map bridge 301 broadcast
 bridge-group 1
!
interface Serial1/1
 no ip address
 no ip route-cache
 shutdown
!
interface Serial1/2
 no ip address
 encapsulation ppp
 no ip route-cache
 no ip mroute-cache
 bridge-group 1
!
interface Serial1/3
 no ip address
 no ip route-cache
 shutdown
!
interface Serial1/4
 no ip address
 no ip route-cache
 shutdown
!
interface Serial1/5
 no ip address
 no ip route-cache
 shutdown
!
interface Serial1/6
 no ip address
 no ip route-cache
 shutdown
!
interface Serial1/7
 no ip address
 no ip route-cache
 shutdown
!
no ip http server
no ip http secure-server
ip classless
!
!
!
dialer-list 1 protocol bridge permit
!
!
bridge 1 protocol ieee
call rsvp-sync
!
!
mgcp profile default
!
!
!
dial-peer cor custom
!
!
!
!
!
line con 0
 exec-timeout 0 0
 logging synchronous
line aux 0
line vty 0 4
 privilege level 15
 no login
!
!
end

R3#