RIP offset list question

I have the following scenario (from Narbik Workbook):
                     |--- R2
                     |
BB1 --- R1-- FR p2p --R4
IP addresses are as follows:
BB1 fa0/0: 131.1.111.111/24
R1 fa0/0: 130.1.111.111/24
R1 ser2/0.14: 131.1.14.1/24
R4: ser2/0.14: 131.1.4.4/24

R1 configuration:
ip access-list standard bb1-routes
 permit 107.1.1.0 0.0.0.127
!
router rip
 version 2
 no validate-update-source
 offset-list bb1-routes out 14 Serial2/0.14
 network 130.1.0.0
 network 131.1.0.0
 distribute-list prefix bb1-prefixes gateway bb1-source in FastEthernet0/0
!
R1 has the following routes (learned from BB1) that need to advertised to R4
such that R4 should not advertise to its neighbor routers:

show ip route | be Gateway
Gateway of last resort is 131.1.12.2 to network 0.0.0.0
     109.0.0.0/22 is subnetted, 1 subnets
R 109.1.4.0 [120/1] via 131.1.111.111, 00:00:26
     107.0.0.0/25 is subnetted, 1 subnets
R 107.1.1.0 [120/1] via 131.1.111.111, 00:00:18
     104.0.0.0/11 is subnetted, 1 subnets
R 104.0.0.0 [120/1] via 131.1.111.111, 00:00:18
     105.0.0.0/14 is subnetted, 1 subnets
R 105.0.0.0 [120/1] via 131.1.111.111, 00:00:18
R* 0.0.0.0/0 [120/1] via 131.1.12.2, 00:00:06, Serial2/0.12

After setting this configuration 107.1.1.0 should be advertised to R4 with
metric=14. But when I check the route table of R4, this 107.0.0.0/8 is still
there reachable with metric=1

If I change the access list with 107.0.0.0 0.0.0.127, R1 start advertising
with metric=14 and therefore R4 has this route with metric=15 in it route
table.

I need explanation from expert on this group.

                                               
Received on Sun Oct 11 2009 - 16:27:29 ART