Routing Notes 02 EIGRP 2 SECURITY

EIGRP Routes and Security

Route Summarization

172.40.0.0/24
172.40.1.0/24
172.40.2.0/24
172.40.3.0/24
172.40.4.0/24
172.40.5.0/24
172.40.6.0/24
172.40.7.0/24  -- 172.40.0.0/21
172.40.8.0/24  --------------------- 172.40.0.0/20

ip summary-address eigrp 172.40.0.0 255.255.248.0
can be configure to an interface
specific routes will be disappered

interface s0/0
ip summary-address eigrp 172.40.0.0 255.255.248.0

Route Security

1. router eigp 10
2.1 passive-interface s0/0
will not send packets to establish eigrp connection

or

2.2 passive-interface default
will not send packets to establish eigrp globally

or

2.3 no passive-interface s0/0
turn on sending packets

Authentication = hashing not encryption

Router A
1. conf t
2. key chain joseph
3. key-string flower
4. accept-lifetime 2:0:0

Router B
1. conf t
2. ip authentication mode eigrp 10 md5
3. ip authentication key-chain eigrp 10 joseph