EIGRP Passive-interface Lab

Lab objective:
Use the passive-interface and passive-interface default command to disalbe EIGRP neighbor establish on some interface that connect to hosts.


Labs step:
1. setup interface ip address in router R1 and R2
2. enable EIGRP protocol in router R1 and R2
3. In R1 router , setup passive-interface fa0/0
4. In R2 router , setup passive-interface default , and no passive-interface s1/0


Router Configurations:

R1#
===============================
hostname R1
!
interface FastEthernet0/0
 ip address 192.168.1.254 255.255.255.0
!
interface Serial1/0
 ip address 10.1.1.1 255.255.255.252
 encapsulation ppp
!
router eigrp 10
 passive-interface FastEthernet0/0
 network 10.1.1.0 0.0.0.3
 network 192.168.1.0
 no auto-summary
===============================



R2#
===============================
hostname R2!
!
interface FastEthernet0/0
 ip address 192.168.2.254 255.255.255.0
!
interface Serial1/0
 ip address 10.1.1.2 255.255.255.252
 encapsulation ppp
!
router eigrp 10
 passive-interface default
 no passive-interface Serial1/0
 network 10.1.1.0 0.0.0.3
 network 192.168.2.0
 no auto-summary
===============================


Router show information
===============================
R1#sh ip eigrp neighbors
IP-EIGRP neighbors for process 10
H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq
                                            (sec)         (ms)       Cnt Num
0   10.1.1.2                Se1/0             10 00:34:56   20   200  0  28 
R1#


R1#sh ip route eigrp
D    192.168.2.0/24 [90/2172416] via 10.1.1.2, 00:12:18, Serial1/0
R1#


R1#sh ip protocols
Routing Protocol is "eigrp 10"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Default networks flagged in outgoing updates
  Default networks accepted from incoming updates
  EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
  EIGRP maximum hopcount 100
  EIGRP maximum metric variance 1
  Redistributing: eigrp 10
  EIGRP NSF-aware route hold timer is 240s
  Automatic network summarization is not in effect
  Maximum path: 4
  Routing for Networks:
    10.1.1.0/30
    192.168.1.0
  Passive Interface(s):
    FastEthernet0/0
  Routing Information Sources:
    Gateway         Distance      Last Update
    (this router)         90      00:46:47
    10.1.1.2              90      00:12:42
  Distance: internal 90 external 170

R1#
===============================

R2#show ip eig neighbors
IP-EIGRP neighbors for process 10
H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq
                                            (sec)         (ms)       Cnt Num
0   10.1.1.1                Se1/0             12 00:39:03   19   200  0  26
R2#


R2#sh ip route eigrp
D    192.168.1.0/24 [90/2172416] via 10.1.1.1, 00:17:26, Serial1/0
R2#


R2#sh ip protocols
Routing Protocol is "eigrp 10"
  Outgoing update filter list for all interfaces is not set
  Incoming update filter list for all interfaces is not set
  Default networks flagged in outgoing updates
  Default networks accepted from incoming updates
  EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
  EIGRP maximum hopcount 100
  EIGRP maximum metric variance 1
  Redistributing: eigrp 10
  EIGRP NSF-aware route hold timer is 240s
  Automatic network summarization is not in effect
  Maximum path: 4
  Routing for Networks:
    10.1.1.0/30
    192.168.2.0
  Passive Interface(s):
    FastEthernet0/0
    FastEthernet0/1
    Serial1/1
    Serial1/2
    Serial1/3
    VoIP-Null0
  Routing Information Sources:
    Gateway         Distance      Last Update
    10.1.1.1              90      00:17:31
  Distance: internal 90 external 170

R2#
===============================