Lab 13. Eigrp Pindah Jalur – Delay

Pada kondisi normal biasanya trafik dari router R1 menuju loopback R3 adalah langsung menuju R3 melalui interface f0/0 karena perhitungan bandwith fastethernetnya, nah apabila kita ingin trafiknya melalui router R2 terlebih dahulu maka parameter metric bisa kita ubah agar memenuhi hal tersebut , salah satunya adalah dengan cara perpindahan jalur delay.

*R1

  • R1 (config)#do sh ip route 3.3.3.3

  Routing entry for 3.3.3.3/32

  Known via “eigrp 10”, distance 90, metric 130816, type internal

 Redistributing via eigrp 10

  Last update from 13.13.13.3 on GigabitEthernet1/0, 00:00:15 ago

  Routing Descriptor Blocks:

  * 13.13.13.3, from 13.13.13.3, 00:00:15 ago, via GigabitEthernet1/0

  Route metric is 130816, traffic share count is 1

  Total delay is 5010 microseconds, minimum bandwidth is 1000000 Kbit

  Reliability 255/255, minimum MTU 1500 bytes   Loading 1/255, Hops 1

Coba cek jalur yang menuju loopback R3 dari R1

*R1

  •  R1 (config)#do traceroute 3.3.3.3

 Type escape sequence to abort.

 Tracing the route to 3.3.3.3

  1 13.13.13.3 16 msec 12 msec 8 msec

Kita juga bisa melakukan pengecekan pada EIGRP topologinya untuk memastikan

jumlah jalur yang menuju ke 3.3.3.3.

*R1

  •  R1#sh ip eigrp topology 3.3.3.3 255.255.255.255

 IP-EIGRP (AS 10): Topology entry for 3.3.3.3/32

 State is Passive, Query origin flag is 1, 1 Successor(s), FD is 130816

 Routing Descriptor Blocks:

 13.13.13.3 (GigabitEthernet1/0), from 13.13.13.3, Send flag is 0x0

 Composite metric is (130816/128256), Route is Internal

 Vector metric:

 Minimum bandwidth is 1000000 Kbit

 Total delay is 5010 microseconds

 Reliability is 255/255

 Load is 1/255

 Minimum MTU is 1500

 Hop count is 1

 12.12.12.2 (FastEthernet0/0), from 12.12.12.2, Send flag is 0x0

 Composite metric is (156416/130816), Route is Internal

 Vector metric:

 Minimum bandwidth is 100000 Kbit

 Total delay is 5110 microseconds

 Reliability is 255/255

 Load is 1/255

 Minimum MTU is 1500

 Hop count is 2

Kita ketahui bahwa G1/0 (1000000) lebih cepat dibandingkan dengan F0/0 (100000). Tetapi nilai delay G1/0 (5010) lebih kecil dibandingkan dengan F0/0 (5110). Adapun cara untuk merubah jalurnya adalah mengecilkan nilai metric dengan merubah delay-nya. Disini kita coba mengecilkan delay pada jalur G1/0.

*R1

  •  R1(config)#interface g1/0  R1(config-if)#delay 1000000

Cek kembali EIGRP topologinya.

*R1

  •  R1(config)#do sh ip eigrp topology 3.3.3.3 255.255.255.255

 IP-EIGRP (AS 10): Topology entry for 3.3.3.3/32

  State is Passive, Query origin flag is 1, 1 Successor(s), FD is 156416

  Routing Descriptor Blocks:

  12.12.12.2 (FastEthernet0/0), from 12.12.12.2, Send flag is 0x0

  Composite metric is (156416/130816), Route is Internal

  Vector metric:

  Minimum bandwidth is 100000 Kbit

  Total delay is 5110 microseconds

  Reliability is 255/255

  Load is 1/255

  Minimum MTU is 1500

  Hop count is 2

  13.13.13.3 (GigabitEthernet1/0), from 13.13.13.3, Send flag is 0x0

  Composite metric is (256130560/128256), Route is Internal

  Vector metric:

  Minimum bandwidth is 1000000 Kbit

  Total delay is 10005000 microseconds

  Reliability is 255/255

  Load is 1/255

  Minimum MTU is 1500   Hop count is 1

Nah, bisa kita lihat bahwa delay-nya sudah menjadi lebih besar. Terakhir kita tinggal cek apakah jalurnya sudah berpindah.

*R1

  •  R1#sh ip route 3.3.3.3

 Routing entry for 3.3.3.3/32

  Known via “eigrp 10”, distance 90, metric 156416, type internal

 Redistributing via eigrp 10

  Last update from 12.12.12.2 on FastEthernet0/0, 00:14:03 ago

  Routing Descriptor Blocks:

  * 12.12.12.2, from 12.12.12.2, 00:14:03 ago, via FastEthernet0/0

  Route metric is 156416, traffic share count is 1

  Total delay is 5110 microseconds, minimum bandwidth is 100000 Kbit

  Reliability 255/255, minimum MTU 1500 bytes

  Loading 1/255, Hops 2

*R1

 R1#ping 3.3.3.3

 Type escape sequence to abort.

 Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:

 !!!!!

 Success rate is 100 percent (5/5), round-trip min/avg/max = 24/32/44 ms

  • R1#traceroute 3.3.3.3

 Type escape sequence to abort.

 Tracing the route to 3.3.3.3

  1 12.12.12.2 8 msec 36 msec 20 msec

  2 23.23.23.3 32 msec 32 msec 28 msec

Maka, sekarang sudah pindah jalurnya lewat R2 dulu baru ke R3

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