LAB: EIGRP Filtering with Per Neighbor AD

Requirements:

Configure administrative distance filtering on R3 so that traffic destined for SW1’s Loopback0 network is sent towards R1.

R3:
access-list 7 permit 150.1.7.0
!
router eigrp 100
distance 255 155.1.37.7 0.0.0.0 7

notes:
The administrative distance for EIGRP internal routes can be changed on a perprefix
basis, but external EIGRP routes cannot.

before:

Rack1R3#show ip route 150.1.7.7
Routing entry for 150.1.7.0/24
Known via "eigrp 100", distance 90, metric 128256, type internal
Redistributing via eigrp 100
Last update from 155.1.37.7 on FastEthernet0/0, 00:01:32 ago
Routing Descriptor Blocks:
* 155.1.37.7, from 155.1.37.7, 00:01:32 ago, via FastEthernet0/0
Route metric is 128256, traffic share count is 1
Total delay is 5010 microseconds, minimum bandwidth is 100000 Kbit
Reliability 255/255, minimum MTU 1500 bytes
Loading 1/255, Hops 1
Rack1R3#show ip eigrp topology 150.1.7.0 255.255.255.0
IP-EIGRP (AS 100): Topology entry for 150.1.7.0/24
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 128256
Routing Descriptor Blocks:
155.1.37.7 (FastEthernet0/0), from 155.1.37.7, Send flag is 0x0
Composite metric is (128256/128000), Route is Internal
Vector metric:
Minimum bandwidth is 100000 Kbit
Total delay is 5010 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 1
155.1.0.5 (Serial1/0.1), from 155.1.0.5, Send flag is 0x0
Composite metric is (1152512/640512), Route is Internal
Vector metric:
Minimum bandwidth is 128 Kbit
Total delay is 45020 microseconds
Reliability is 255/255
Load is 1/255

after:

Rack1R3#show ip eigrp topology 150.1.7.0 255.255.255.0
IP-EIGRP (AS 100): Topology entry for 150.1.7.0/24
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 645120
Routing Descriptor Blocks:
155.1.13.1 (Serial1/2), from 155.1.13.1, Send flag is 0x0
Composite metric is (645120/133120), Route is Internal
Vector metric:
Minimum bandwidth is 128 Kbit
Total delay is 25200 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 3
155.1.0.5 (Serial1/0.1), from 155.1.0.5, Send flag is 0x0
Composite metric is (1157120/645120), Route is Internal
Vector metric:
Minimum bandwidth is 128 Kbit
Total delay is 45200 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 4