TSHOOT: EIGRP REDISTRIBUTION

r1


!
interface Serial0/0
 ip address 10.10.10.2 255.255.255.0
 ip summary-address eigrp 1 192.168.4.0 255.255.252.0 5
 serial restart-delay 0
!
interface Serial0/1
 ip address 10.20.20.1 255.255.255.0
 ip summary-address eigrp 1 192.168.0.0 255.255.252.0 5
 serial restart-delay 0
!
interface Serial0/2
 no ip address
 shutdown
 serial restart-delay 0
!
interface Serial0/3
 no ip address
 shutdown
 serial restart-delay 0
!
router eigrp 1
 network 10.10.10.0 0.0.0.255
 network 10.20.20.0 0.0.0.255
 no auto-summary
!

TSHOOT : EIGRP over NBMA

 In the above practical, I wanted to revise whatever I learned in CCNP route EIGRP:

Above diagram is in the GNS3 and to the right in the logical diagram of the network.

I covered following eigrp over
1> multipoint NBMA
2> point to point NBMA
3> point to multipoint
4> redistribution

I am going to paste the config of the R1 and R5. And outout from R7 and R4


R1 Config




interface Loopback1
 ip address 172.16.1.1 255.255.255.0
!
interface Serial0/0
 no ip address
 encapsulation frame-relay
 no ip split-horizon eigrp 10
 no ip split-horizon eigrp 11
 serial restart-delay 0
!
interface Serial0/0.1 point-to-point
 ip address 192.168.1.1 255.255.255.0
 snmp trap link-status
 frame-relay interface-dlci 103
!
interface Serial0/0.2 point-to-point
 ip address 192.168.2.1 255.255.255.0
 snmp trap link-status
 frame-relay interface-dlci 104
!
interface Serial0/0.3 multipoint
 ip address 10.10.10.4 255.255.255.0
 snmp trap link-status
 frame-relay map ip 10.10.10.1 105 broadcast
!
router eigrp 10
 redistribute eigrp 11
 network 172.16.1.0 0.0.0.255
 network 192.168.1.0
 network 192.168.2.0
 no auto-summary
!
router eigrp 11
 redistribute eigrp 10
 network 10.10.10.0 0.0.0.255
 no auto-summary
!

R5 Config

interface Loopback1
 ip address 172.16.5.1 255.255.255.0
!
interface Serial0/0
 ip address 10.10.10.1 255.255.255.0
 encapsulation frame-relay
 no ip split-horizon eigrp 11
 serial restart-delay 0
 frame-relay map ip 10.10.10.2 506 broadcast
 frame-relay map ip 10.10.10.3 507 broadcast
 frame-relay map ip 10.10.10.4 501 broadcast
!
router eigrp 11
 network 10.10.10.0 0.0.0.255
 network 172.16.5.0 0.0.0.255
 no auto-summary
!

OUTPUT from R4


R4#sh ip route
Codes: 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

Gateway of last resort is not set

     172.16.0.0/24 is subnetted, 6 subnets
C       172.16.4.0 is directly connected, Loopback1
D EX    172.16.5.0 [170/2809856] via 192.168.2.1, 00:33:02, Serial0/0.1
D EX    172.16.6.0 [170/3321856] via 192.168.2.1, 00:33:02, Serial0/0.1
D EX    172.16.7.0 [170/3321856] via 192.168.2.1, 00:33:02, Serial0/0.1
D       172.16.1.0 [90/2297856] via 192.168.2.1, 00:58:44, Serial0/0.1
D       172.16.3.0 [90/2809856] via 192.168.2.1, 00:50:57, Serial0/0.1
     10.0.0.0/24 is subnetted, 1 subnets
D EX    10.10.10.0 [170/2681856] via 192.168.2.1, 00:33:03, Serial0/0.1
D    192.168.1.0/24 [90/2681856] via 192.168.2.1, 00:58:46, Serial0/0.1
C    192.168.2.0/24 is directly connected, Serial0/0.1

Output from R7

R7#sh ip route
Codes: 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

Gateway of last resort is not set

     172.16.0.0/24 is subnetted, 6 subnets
D EX    172.16.4.0 [170/3321856] via 10.10.10.1, 00:27:05, Serial0/0
D       172.16.5.0 [90/2297856] via 10.10.10.1, 00:42:51, Serial0/0
D       172.16.6.0 [90/2297856] via 10.10.10.2, 00:42:51, Serial0/0
C       172.16.7.0 is directly connected, Loopback1
D EX    172.16.1.0 [170/2809856] via 10.10.10.1, 00:27:05, Serial0/0
D EX    172.16.3.0 [170/3321856] via 10.10.10.1, 00:27:05, Serial0/0
     10.0.0.0/24 is subnetted, 1 subnets
C       10.10.10.0 is directly connected, Serial0/0
D EX 192.168.1.0/24 [170/3193856] via 10.10.10.1, 00:27:07, Serial0/0
D EX 192.168.2.0/24 [170/3193856] via 10.10.10.1, 00:27:07, Serial0/0

Why split horizon is required on serial0/0 on R1 and R5??

TSHOOT: EIGRP AD & FD PART 3

In Part 2 we have seen the show ip route output as


D    192.168.4.0/24 [90/358400] via 192.168.1.4, 00:45:42, Ethernet0/0
                    [90/358400] via 192.168.1.2, 00:45:42, Ethernet0/0
                    [90/358400] via 192.168.1.1, 00:45:42, Ethernet0/0
D    192.168.5.0/24 [90/486400] via 192.168.1.4, 00:45:42, Ethernet0/0
                    [90/486400] via 192.168.1.2, 00:45:42, Ethernet0/0
                    [90/486400] via 192.168.1.1, 00:45:42, Ethernet0/0
D    192.168.6.0/24 [90/486400] via 192.168.1.4, 00:45:42, Ethernet0/0
                    [90/486400] via 192.168.1.2, 00:45:43, Ethernet0/0
                    [90/486400] via 192.168.1.1, 00:45:43, Ethernet0/0
C    192.168.7.0/24 is directly connected, Ethernet0/1
C    192.168.1.0/24 is directly connected, Ethernet0/0
D    192.168.2.0/24 [90/307200] via 192.168.1.4, 01:06:55, Ethernet0/0
                    [90/307200] via 192.168.1.2, 01:06:55, Ethernet0/0
                    [90/307200] via 192.168.1.1, 01:06:55, Ethernet0/0
D    192.168.3.0/24 [90/332800] via 192.168.1.4, 00:45:46, Ethernet0/0
                    [90/332800] via 192.168.1.2, 00:45:46, Ethernet0/0
                    [90/332800] via 192.168.1.1, 00:45:46, Ethernet0/0

But now in this scenario we have the below output

D    192.168.4.0/24 [90/358400] via 192.168.1.4, 00:00:21, Ethernet0/0

                    [90/358400] via 192.168.1.2, 00:00:21, Ethernet0/0

                    [90/358400] via 192.168.1.1, 00:00:21, Ethernet0/0

D    192.168.5.0/24 [90/2713600] via 192.168.7.2, 00:00:21, Ethernet0/1

                    [90/486400] via 192.168.1.4, 00:00:21, Ethernet0/0

                    [90/486400] via 192.168.1.2, 00:00:21, Ethernet0/0

                    [90/486400] via 192.168.1.1, 00:00:21, Ethernet0/0

D    192.168.6.0/24 [90/2713600] via 192.168.7.2, 00:00:22, Ethernet0/1

                    [90/486400] via 192.168.1.4, 00:00:22, Ethernet0/0

                    [90/486400] via 192.168.1.2, 00:00:22, Ethernet0/0

                    [90/486400] via 192.168.1.1, 00:00:22, Ethernet0/0

C    192.168.7.0/24 is directly connected, Ethernet0/1

C    192.168.1.0/24 is directly connected, Ethernet0/0

D    192.168.2.0/24 [90/307200] via 192.168.1.4, 00:00:25, Ethernet0/0

                    [90/307200] via 192.168.1.2, 00:00:25, Ethernet0/0

                    [90/307200] via 192.168.1.1, 00:00:25, Ethernet0/0

D    192.168.3.0/24 [90/332800] via 192.168.1.4, 00:00:25, Ethernet0/0

                    [90/332800] via 192.168.1.2, 00:00:25, Ethernet0/0

                    [90/332800] via 192.168.1.1, 00:00:25, Ethernet0/0

why the above behavior based on the output shown below?

R6#sh run | b eigrp

router eigrp 10

 variance 6

 network 192.168.1.0

 network 192.168.7.0

 no auto-summary

Now the new question is why Variance is 6??

TSHOOT: EIGRP AD & FD PART 2

Now check this out! I have changed the bandwidth from default 10000 to 1000. Due to the change in the K value there is change in the topology and the route table.


R6(config)#do sh run inter e0/1
Building configuration...

Current configuration : 96 bytes
!
interface Ethernet0/1
 bandwidth 1000
 ip address 192.168.7.1 255.255.255.0
 half-duplex
end

R6(config)#do sh ip route

Codes: 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

Gateway of last resort is not set

D    192.168.4.0/24 [90/358400] via 192.168.1.4, 00:07:07, Ethernet0/0

                    [90/358400] via 192.168.1.2, 00:07:07, Ethernet0/0

                    [90/358400] via 192.168.1.1, 00:07:07, Ethernet0/0

D    192.168.5.0/24 [90/486400] via 192.168.1.4, 00:07:06, Ethernet0/0

                    [90/486400] via 192.168.1.2, 00:07:06, Ethernet0/0

                    [90/486400] via 192.168.1.1, 00:07:06, Ethernet0/0

D    192.168.6.0/24 [90/486400] via 192.168.1.4, 00:07:06, Ethernet0/0

                    [90/486400] via 192.168.1.2, 00:07:08, Ethernet0/0

                    [90/486400] via 192.168.1.1, 00:07:08, Ethernet0/0

C    192.168.7.0/24 is directly connected, Ethernet0/1

C    192.168.1.0/24 is directly connected, Ethernet0/0

D    192.168.2.0/24 [90/307200] via 192.168.1.4, 00:28:20, Ethernet0/0

                    [90/307200] via 192.168.1.2, 00:28:20, Ethernet0/0

                    [90/307200] via 192.168.1.1, 00:28:20, Ethernet0/0

D    192.168.3.0/24 [90/332800] via 192.168.1.4, 00:07:12, Ethernet0/0

                    [90/332800] via 192.168.1.2, 00:07:12, Ethernet0/0

                    [90/332800] via 192.168.1.1, 00:07:12, Ethernet0/0

R6(config)#do sh ip eigrp top

IP-EIGRP Topology Table for AS(10)/ID(192.168.1.3)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,

       r - reply Status, s - sia Status

P 192.168.1.0/24, 1 successors, FD is 281600

        via Connected, Ethernet0/0

P 192.168.2.0/24, 3 successors, FD is 307200

        via 192.168.1.1 (307200/281600), Ethernet0/0

        via 192.168.1.2 (307200/281600), Ethernet0/0, serno 76

        via 192.168.1.4 (307200/281600), Ethernet0/0, serno 57

P 192.168.3.0/24, 3 successors, FD is 332800

        via 192.168.1.1 (332800/307200), Ethernet0/0

        via 192.168.1.2 (332800/307200), Ethernet0/0, serno 77

        via 192.168.1.4 (332800/307200), Ethernet0/0, serno 89

        via 192.168.7.2 (2636800/307200), Ethernet0/1

P 192.168.4.0/24, 3 successors, FD is 358400

        via 192.168.1.1 (358400/332800), Ethernet0/0

        via 192.168.1.2 (358400/332800), Ethernet0/0

        via 192.168.1.4 (358400/332800), Ethernet0/0

        via 192.168.7.2 (2611200/281600), Ethernet0/1

P 192.168.5.0/24, 3 successors, FD is 486400

        via 192.168.1.1 (486400/460800), Ethernet0/0

        via 192.168.1.2 (486400/460800), Ethernet0/0

        via 192.168.1.4 (486400/460800), Ethernet0/0

        via 192.168.7.2 (2713600/128256), Ethernet0/1

P 192.168.6.0/24, 3 successors, FD is 486400

        via 192.168.1.1 (486400/460800), Ethernet0/0

        via 192.168.1.2 (486400/460800), Ethernet0/0

        via 192.168.1.4 (486400/460800), Ethernet0/0

        via 192.168.7.2 (2713600/128256), Ethernet0/1

P 192.168.7.0/24, 1 successors, FD is 2585600

        via Connected, Ethernet0/1

        via 192.168.1.1 (384000/358400), Ethernet0/0

        via 192.168.1.4 (384000/358400), Ethernet0/0

        via 192.168.1.2 (384000/358400), Ethernet0/0

Why

1> Changing the bandwidth caused the change in the output of the show ip route?

2> Why the best routes are via 192.168.1.1, 192.168.1.2 and 192.168.1.4 and why not 192.168.7.2 any more?

3> Is there any other parameter that can be changed to make this work alike?

TSHOOT: EIGRP AD & FD PART 1

The only change I did in the scenario is that I have added a direct link from R6 to R8.

Before adding this link the topology table in R6 was:



R6(config-if)#do sh ip eigrp top
IP-EIGRP Topology Table for AS(10)/ID(192.168.1.3)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status

P 192.168.1.0/24, 1 successors, FD is 281600
        via Connected, Ethernet0/0
P 192.168.2.0/24, 3 successors, FD is 307200
        via 192.168.1.1 (307200/281600), Ethernet0/0
        via 192.168.1.2 (307200/281600), Ethernet0/0, serno 76
        via 192.168.1.4 (307200/281600), Ethernet0/0, serno 57
P 192.168.3.0/24, 3 successors, FD is 332800
        via 192.168.1.1 (332800/307200), Ethernet0/0
        via 192.168.1.2 (332800/307200), Ethernet0/0, serno 77
        via 192.168.1.4 (332800/307200), Ethernet0/0, serno 89
P 192.168.4.0/24, 3 successors, FD is 358400
        via 192.168.1.1 (358400/332800), Ethernet0/0
        via 192.168.1.2 (358400/332800), Ethernet0/0
        via 192.168.1.4 (358400/332800), Ethernet0/0
P 192.168.5.0/24, 3 successors, FD is 486400
        via 192.168.1.1 (486400/460800), Ethernet0/0
        via 192.168.1.2 (486400/460800), Ethernet0/0
        via 192.168.1.4 (486400/460800), Ethernet0/0
P 192.168.6.0/24, 3 successors, FD is 486400
        via 192.168.1.1 (486400/460800), Ethernet0/0
        via 192.168.1.2 (486400/460800), Ethernet0/0
        via 192.168.1.4 (486400/460800), Ethernet0/0
P 192.168.7.0/24, 3 successors, FD is 384000
        via 192.168.1.1 (384000/358400), Ethernet0/0
        via 192.168.1.2 (384000/358400), Ethernet0/0
        via 192.168.1.4 (384000/358400), Ethernet0/0

AFTER ADDING THE LINK


R6(config-if)#do sh ip eigrp top
IP-EIGRP Topology Table for AS(10)/ID(192.168.1.3)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
       r - reply Status, s - sia Status

P 192.168.1.0/24, 1 successors, FD is 281600
        via Connected, Ethernet0/0
P 192.168.2.0/24, 3 successors, FD is 307200
        via 192.168.1.1 (307200/281600), Ethernet0/0
        via 192.168.1.2 (307200/281600), Ethernet0/0, serno 76
        via 192.168.1.4 (307200/281600), Ethernet0/0, serno 57
P 192.168.3.0/24, 4 successors, FD is 332800
        via 192.168.1.1 (332800/307200), Ethernet0/0
        via 192.168.1.2 (332800/307200), Ethernet0/0, serno 77
        via 192.168.1.4 (332800/307200), Ethernet0/0, serno 89
        via 192.168.7.2 (332800/307200), Ethernet0/1
P 192.168.4.0/24, 1 successors, FD is 307200
        via 192.168.7.2 (307200/281600), Ethernet0/1
P 192.168.5.0/24, 1 successors, FD is 409600
        via 192.168.7.2 (409600/128256), Ethernet0/1
P 192.168.6.0/24, 1 successors, FD is 409600
        via 192.168.7.2 (409600/128256), Ethernet0/1
P 192.168.7.0/24, 1 successors, FD is 281600
        via Connected, Ethernet0/1


why??

TSHOOT: EIGRP

I wanted to revise the EIGRP completely. So i have created above diagram.

Now questions:


Scenario 1

How many neighbors should I expect in the R6 and how many in the active routes for the network 192.168.6.0 in R6?


R6#show ip eigrp neighbors
IP-EIGRP neighbors for process 10
H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq
                                            (sec)         (ms)       Cnt Num
2   192.168.1.4             Et0/0             13 01:18:39   86   774  0  69
1   192.168.1.2             Et0/0             11 01:31:08   90   810  0  78
0   192.168.1.1             Et0/0             11 01:32:36  125  1125  0  70

R6#show ip route 192.168.6.0

Routing entry for 192.168.6.0/24

  Known via "eigrp 10", distance 90, metric 486400, type internal

  Redistributing via eigrp 10

  Last update from 192.168.1.1 on Ethernet0/0, 00:37:29 ago

  Routing Descriptor Blocks:

  * 192.168.1.4, from 192.168.1.4, 00:37:29 ago, via Ethernet0/0

      Route metric is 486400, traffic share count is 1

      Total delay is 9000 microseconds, minimum bandwidth is 10000 Kbit

      Reliability 255/255, minimum MTU 1500 bytes

      Loading 1/255, Hops 4

    192.168.1.2, from 192.168.1.2, 00:37:29 ago, via Ethernet0/0

      Route metric is 486400, traffic share count is 1

      Total delay is 9000 microseconds, minimum bandwidth is 10000 Kbit

      Reliability 255/255, minimum MTU 1500 bytes

      Loading 1/255, Hops 4

    192.168.1.1, from 192.168.1.1, 00:37:29 ago, via Ethernet0/0

      Route metric is 486400, traffic share count is 1

      Total delay is 9000 microseconds, minimum bandwidth is 10000 Kbit

      Reliability 255/255, minimum MTU 1500 bytes

      Loading 1/255, Hops 4

R6#show ip route

Codes: 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

Gateway of last resort is not set

D    192.168.4.0/24 [90/358400] via 192.168.1.4, 00:45:33, Ethernet0/0

                    [90/358400] via 192.168.1.2, 00:45:33, Ethernet0/0

                    [90/358400] via 192.168.1.1, 00:45:33, Ethernet0/0

D    192.168.5.0/24 [90/486400] via 192.168.1.4, 00:38:09, Ethernet0/0

                    [90/486400] via 192.168.1.2, 00:38:09, Ethernet0/0

                    [90/486400] via 192.168.1.1, 00:38:09, Ethernet0/0

D    192.168.6.0/24 [90/486400] via 192.168.1.4, 00:38:09, Ethernet0/0

                    [90/486400] via 192.168.1.2, 00:38:11, Ethernet0/0

                    [90/486400] via 192.168.1.1, 00:38:11, Ethernet0/0

C    192.168.1.0/24 is directly connected, Ethernet0/0

D    192.168.2.0/24 [90/307200] via 192.168.1.4, 01:19:59, Ethernet0/0

                    [90/307200] via 192.168.1.2, 01:19:59, Ethernet0/0

                    [90/307200] via 192.168.1.1, 01:19:59, Ethernet0/0

D    192.168.3.0/24 [90/332800] via 192.168.1.4, 01:15:58, Ethernet0/0

                    [90/332800] via 192.168.1.2, 01:15:58, Ethernet0/0

                    [90/332800] via 192.168.1.1, 01:15:58, Ethernet0/0