Lab 16. RIP Convergence Timers
RIP Timers
- Update 30 sec : secara default RIP melakukan update secara periodic setiap 30 detik.
- Invalid 180 sec : route akan dinyatakan invalid jika sampai detik ke 180, tidak juga menerima update mengenai route tersebut. Route akan ditandai "inaccessible" dan diadvertise sebagai "unreachable", namun demikian route akan tetap ada dalam tabel routing.
- Hold down 180 sec : apabila nilai metric sebuah route berubah, maka RIP tidak akan menerima update dari router lain terlebih dahulu hingga waktu ini berakhir. Nilai ini hanya ada di Cisco saja, tidak ada di RFC.
- Flush 240 sec : route akan benar-benar dihapus dari routing tabel jika dalam waktu 240 detik tidak mendapatkan update.
- Nilai di atas juga bisa dirubah dengan perintah "timer basics (update) (invalid) (hold) (flush)
"
Tujuan Lab :
- Merubah nilai waktu routing update RIP, yakni dari defaultnya 30 detik menjadi berapapun yang diinginkan
- Merubah nilai routing update, invalid, hold down dan flush
Topologi Lab :
Metode Lab :
- Masih menggunakan konfigurasi lab sebelumnya
- Rubah routing updatenya dari 30 detik menjadi 10 detik
- Rubah nilai invalid, hold down dan flush
Verifikasi Lab :
- Cek kondisi awal pewaktuan routing updatenya
- Setelah dikonfigurasi timer updatenya, periksa kembali nilai waktu routing updatenya
Cek periodic update untuk RIP
Router R1
R1#sh ip protocols
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 30 seconds, next due in 6 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Router R2
R2#sh ip protocols
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 30 seconds, next due in 8 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Router R3
R3#sh ip protocols
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 30 seconds, next due in 25 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
Jika diinginkan Router R1 - R2 updatenya lebih cepat dari default, misal setiap 10 detik. Sedangkan Router R2 - R3 tetap sesuai defaultnya yaitu 30 detik, maka konfigurasi seperti berikut pada Link Router R1 - R2 :
Router R1
R1(config)#router rip
R1(config-router)#timers basic ?
<0-4294967295> Interval between updates
R1(config-router)#timers basic 10 ?
<1-4294967295> Invalid
R1(config-router)#timers basic 10 60 ?
<0-4294967295> Holddown
R1(config-router)#timers basic 10 60 60 ?
<1-4294967295> Flush
R1(config-router)#timers basic 10 60 60 80
Router R2
R2(config)#router rip
R2(config-router)#timers basic 10 60 60 80
Karena Link Router R2 - R3 pewaktuannya sama seperti defalutnya, maka perlu ditambahkan konfigurasi berikut pada Router R2 :
Router R2
R2(config-router)#int f0/0
R2(config-if)#ip rip ?
advertise Specify update interval
authentication Authentication control
initial-delay Specify initial delay interval
receive advertisement reception
send advertisement transmission
v2-broadcast send ip broadcast v2 update
R2(config-if)#ip rip advertise ?
<0-4294966> interval in seconds
R2(config-if)#ip rip advertise 30
Cek kembali periodic updatenya dan tes ping
Router R1
R1#sh ip protocols
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 10 seconds, next due in 9 seconds
Invalid after 60 seconds, hold down 60, flushed after 80
R1#ping 2.2.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 4/24/84 ms
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 = 20/36/64 ms
Router R2
R2#sh ip protocols
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 10 seconds, next due in 9 seconds
Invalid after 60 seconds, hold down 60, flushed after 80
R2#ping 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/9/16 ms
R2#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 = 16/34/72 ms
Router R3
R3#sh ip protocols
Routing Protocol is "rip"
Outgoing update filter list for all interfaces is not set
Incoming update filter list for all interfaces is not set
Sending updates every 30 seconds, next due in 13 seconds
Invalid after 180 seconds, hold down 180, flushed after 240
R3#ping 1.1.1.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 20/32/56 ms
R3#ping 2.2.2.2
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 12/30/52 ms
Dapat kita lihat setelah dikonfigurasi routing updatenya, nilai invalid, hold down dan flush pada Router R1 dan R2 sudah berubah dan antar router masih terkoneksi dengan baik.
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