Passive Interface
LAB3: EIGRP – IPv4
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LAB 3: Diagram
Note: This Lab was developed on Cisco IOS Version15.2(4) M1 ADVENTERPRISEK9-M.
LAB 3: EIGRP Passive-interface
Task 1: Configure IPv4 EIGRP process with Passive interface
In the configuration mode of router configure EIGRP process using network 0.0.0.0 by following command
R2:
router eigrp 100
network 0.0.0.0
exit
(Send updates on all the interfaces.)
Suppress EIGRP updates using “passive-interface” command and “passive-interface default” command
R2:
router eigrp 100
passive-interface loop3
exit
(After suppressing EIGRP updates on Loopback 3 by using passive-interface command, Lo3 is suppressed and not been seen.)
R2#show ip eigrp interface
! (Gives detailed list of interfaces on which EIGRP is sending updates)
EIGRP-IPv4 Interfaces for AS(100)
Xmit Queue PeerQ Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable Un/Reliable SRTT Un/Reliable Flow Timer Routes
Lo1 0 0/0 0/0 0 0/0 0 0
Lo2 0 0/0 0/0 0 0/0 0 0
Se2/0 1 0/0 0/0 16 0/16 92 0
Et0/0 1 0/0 0/0 6 0/2 50 0
R2:
router eigrp 100
passive-interface default
exit
(After suppressing EIGRP updates by using passive-interface default command, all interface is suppressed and not been seen.)
R2# show ip eigrp interfaces
! (Gives detailed list of interfaces on which EIGRP is sending updates)
EIGRP-IPv4 Interfaces for AS(100)
Xmit Queue PeerQ Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable Un/Reliable SRTT Un/Reliable Flow Timer Routes
Un-suppress EIGRP updates using “no passive-interface” command
R2:
router eigrp 100
no passive-interface default
exit
(After un-suppressing EIGRP updates using no passive-interface default command, all interfaces are un-suppress and are seen in eigrp interface table.)
R2# show ip eigrp interfaces
! (Gives detailed list of interfaces on which EIGRP is sending updates)
EIGRP-IPv4 Interfaces for AS(100)
Xmit Queue PeerQ Mean Pacing Time Multicast Pending
Interface Peers Un/Reliable Un/Reliable SRTT Un/Reliable Flow Timer Routes
Se2/0 1 0/0 0/0 17 0/16 100 0
Et0/0 1 0/0 0/0 9 0/2 50 0
Lo1 0 0/0 0/0 0 0/0 0 0
Lo2 0 0/0 0/0 0 0/0 0 0
Lo3 0 0/0 0/0 0 0/0 0 0
Task 2: Verification:
Verify EIGRP neighborship by following command:
R2#show ip eigrp neighbors
! (Gives details and list of EIGRP neighbors)
EIGRP-IPv4 Neighbors for AS(100)
H Address Interface Hold Uptime SRTT RTO Q Seq
(sec) (ms) Cnt Num
1 23.0.0.3 Et0/0 12 00:16:57 9 100 0 7
0 12.0.0.1 Se2/0 12 00:17:43 17 102 0 5
Verify routing table and EIGRP routes by following command:
R2#show ip route
! (Shows router’s routing table and IPv4 entries)
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
+ - replicated route, % - next hop override
Gateway of last resort is not set
11.0.0.0/24 is subnetted, 3 subnets
D 11.0.1.0 [90/2297856] via 12.0.0.1, 00:21:10, Serial2/0
D 11.0.2.0 [90/2297856] via 12.0.0.1, 00:21:10, Serial2/0
D 11.0.3.0 [90/2297856] via 12.0.0.1, 00:21:10, Serial2/0
12.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 12.0.0.0/24 is directly connected, Serial2/0
L 12.0.0.2/32 is directly connected, Serial2/0
22.0.0.0/8 is variably subnetted, 6 subnets, 2 masks
C 22.0.1.0/24 is directly connected, Loopback1
L 22.0.1.2/32 is directly connected, Loopback1
C 22.0.2.0/24 is directly connected, Loopback2
L 22.0.2.2/32 is directly connected, Loopback2
C 22.0.3.0/24 is directly connected, Loopback3
L 22.0.3.2/32 is directly connected, Loopback3
23.0.0.0/8 is variably subnetted, 2 subnets, 2 masks
C 23.0.0.0/24 is directly connected, Ethernet0/0
L 23.0.0.2/32 is directly connected, Ethernet0/0
33.0.0.0/24 is subnetted, 3 subnets
D 33.0.1.0 [90/409600] via 23.0.0.3, 00:20:19, Ethernet0/0
D 33.0.2.0 [90/409600] via 23.0.0.3, 00:20:19, Ethernet0/0
D 33.0.3.0 [90/409600] via 23.0.0.3, 00:20:19, Ethernet0/0
34.0.0.0/24 is subnetted, 1 subnets
D 34.0.0.0 [90/2195456] via 23.0.0.3, 00:20:19, Ethernet0/0
44.0.0.0/24 is subnetted, 3 subnets
D 44.0.1.0 [90/2323456] via 23.0.0.3, 00:19:39, Ethernet0/0
D 44.0.2.0 [90/2323456] via 23.0.0.3, 00:19:39, Ethernet0/0
D 44.0.3.0 [90/2323456] via 23.0.0.3, 00:19:39, Ethernet0/0
