EIGRP-IPv4 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