Difference between revisions of "Mikrotik: BFD Deteksi Link Failure"
Jump to navigation
Jump to search
Onnowpurbo (talk | contribs) |
Onnowpurbo (talk | contribs) |
||
| (13 intermediate revisions by the same user not shown) | |||
| Line 1: | Line 1: | ||
| − | Berikut | + | Berikut ''panduan lengkap & praktis setting BFD untuk BGP di MikroTik RouterOS'' (v6 & v7), fokus ke '''fast convergence saat link putus'''. |
| Line 5: | Line 5: | ||
==Konsep Singkat (Penting)== | ==Konsep Singkat (Penting)== | ||
| − | * '''BFD ≠ BGP''' BFD hanya | + | * '''BFD ≠ BGP''' BFD hanya ''deteksi link mati super cepat'' (ms) |
| − | * '''BGP pakai hasil BFD''' Saat BFD | + | * '''BGP pakai hasil BFD''' Saat BFD '''down''' → ''BGP langsung withdraw route'' |
Target: | Target: | ||
| − | * ⏱️ | + | * ⏱️ '''Default BGP:''' 1–3 menit ❌ |
| − | * ⚡ | + | * ⚡ '''BGP + BFD:''' < '''300 ms''' 🔥 |
| − | |||
| − | |||
==1️⃣ Cek Versi RouterOS== | ==1️⃣ Cek Versi RouterOS== | ||
| Line 23: | Line 21: | ||
|- | |- | ||
| v6.43+ || BFD tersedia | | v6.43+ || BFD tersedia | ||
| + | |- | ||
| v7.x || BFD '''lebih stabil & recommended'' | | v7.x || BFD '''lebih stabil & recommended'' | ||
|} | |} | ||
| − | |||
| − | |||
==2️⃣ Konfigurasi BFD (WAJIB)== | ==2️⃣ Konfigurasi BFD (WAJIB)== | ||
| Line 38: | Line 35: | ||
Artinya: | Artinya: | ||
| − | * Kirim paket tiap | + | * Kirim paket tiap '''100 ms''' |
| − | * Deteksi mati: | + | * Deteksi mati: '''300 ms''' |
| − | * Cocok untuk | + | * Cocok untuk '''fiber / radio bagus / LAN''' |
⚠️ Jangan pakai <50ms di wireless jelek | ⚠️ Jangan pakai <50ms di wireless jelek | ||
| − | |||
| − | |||
==3️⃣ Aktifkan BFD di Peer BGP (RouterOS v7)== | ==3️⃣ Aktifkan BFD di Peer BGP (RouterOS v7)== | ||
| Line 86: | Line 81: | ||
state=down | state=down | ||
| − | ➡️ BGP | + | ➡️ BGP '''langsung disconnect''' |
| − | |||
| − | |||
==6️⃣ Test Fast Failover== | ==6️⃣ Test Fast Failover== | ||
| Line 109: | Line 102: | ||
==7️⃣ Topologi Paling Umum (Dual Link)== | ==7️⃣ Topologi Paling Umum (Dual Link)== | ||
| − | + | * https://data-discourse.cdn.mikrotik.com/original/3X/8/8/88994367cafc6525e7606588f6faad1b9a15b694.png | |
| − | |||
| − | |||
| − | |||
| − | |||
| + | * https://i.imgur.com/huowhnq.png | ||
| + | * https://www.researchgate.net/publication/335142069/figure/fig3/AS%3A1095918434684930%401638298724943/OpenFlow-fast-failover-group-BFD-bidirectional-forwarding-detection-LOS-loss-of-signal.png | ||
==8️⃣ Best Practice BFD di MikroTik== | ==8️⃣ Best Practice BFD di MikroTik== | ||
| − | + | * Gunakan ''RouterOS v7'' | |
| − | + | * Aktifkan ''1 BFD per interface'', bukan per peer | |
| − | + | * Jangan terlalu agresif di wireless | |
| − | + | * Kombinasikan dengan '''ECMP''' bila multi-link | |
| − | |||
==Rekomendasi Setting Cepat & Stabil== | ==Rekomendasi Setting Cepat & Stabil== | ||
| Line 136: | Line 126: | ||
==Kesalahan Umum== | ==Kesalahan Umum== | ||
| − | + | * Lupa enable `bfd=yes` di BGP peer | |
| − | + | * Timer BFD terlalu kecil → flapping | |
| − | + | * Peer ISP '''tidak support BFD''' (cek dulu!) | |
| − | |||
==Ringkasan== | ==Ringkasan== | ||
| Line 148: | Line 137: | ||
|- | |- | ||
| BFD detect || 300 ms | | BFD detect || 300 ms | ||
| + | |- | ||
| BGP fallback || 30 detik | | BGP fallback || 30 detik | ||
| + | |- | ||
| Failover real || < 1 detik | | Failover real || < 1 detik | ||
| + | |- | ||
| Cocok untuk || ISP, Kampus, DC, Tambang | | Cocok untuk || ISP, Kampus, DC, Tambang | ||
|} | |} | ||
Latest revision as of 18:52, 22 December 2025
Berikut panduan lengkap & praktis setting BFD untuk BGP di MikroTik RouterOS (v6 & v7), fokus ke fast convergence saat link putus.
Konsep Singkat (Penting)
- BFD ≠ BGP BFD hanya deteksi link mati super cepat (ms)
- BGP pakai hasil BFD Saat BFD down → BGP langsung withdraw route
Target:
- ⏱️ Default BGP: 1–3 menit ❌
- ⚡ BGP + BFD: < 300 ms 🔥
1️⃣ Cek Versi RouterOS
/system resource print
| RouterOS | Status |
|---|---|
| v6.43+ | BFD tersedia |
| v7.x | BFD 'lebih stabil & recommended |
2️⃣ Konfigurasi BFD (WAJIB)
Contoh Parameter Aman & Cepat
/routing bfd configuration add interfaces=ether1 min-tx=100ms min-rx=100ms multiplier=3
Artinya:
- Kirim paket tiap 100 ms
- Deteksi mati: 300 ms
- Cocok untuk fiber / radio bagus / LAN
⚠️ Jangan pakai <50ms di wireless jelek
3️⃣ Aktifkan BFD di Peer BGP (RouterOS v7)
/routing bgp connection set [find name=peer-ISP] bfd=yes
Atau saat membuat peer:
/routing bgp connection
add name=peer-ISP \
remote.address=192.168.10.1 \
remote.as=65001 \
local.as=65000 \
bfd=yes
4️⃣ (Opsional) Percepat Timer BGP
- Jika **tanpa BFD**, timer ini penting
- Jika **pakai BFD**, timer ini backup only
/routing bgp connection set peer-ISP keepalive-time=10s hold-time=30s
5️⃣ Verifikasi BFD (WAJIB)
Cek Status BFD
/routing bfd session print
Status normal:
state=up
Jika:
state=down
➡️ BGP langsung disconnect
6️⃣ Test Fast Failover
Cara Aman Test
- Cabut kabel fiber
- Shutdown interface upstream
- Disable VLAN
Pantau:
/routing bgp session print /ip route print where bgp
⏱️ Harus turun < 1 detik
7️⃣ Topologi Paling Umum (Dual Link)
- https://data-discourse.cdn.mikrotik.com/original/3X/8/8/88994367cafc6525e7606588f6faad1b9a15b694.png
8️⃣ Best Practice BFD di MikroTik
- Gunakan RouterOS v7
- Aktifkan 1 BFD per interface, bukan per peer
- Jangan terlalu agresif di wireless
- Kombinasikan dengan ECMP bila multi-link
Rekomendasi Setting Cepat & Stabil
/routing bfd configuration add interfaces=ether1 min-tx=100ms min-rx=100ms multiplier=3
/routing bgp connection set peer-ISP bfd=yes keepalive-time=10s hold-time=30s
Kesalahan Umum
- Lupa enable `bfd=yes` di BGP peer
- Timer BFD terlalu kecil → flapping
- Peer ISP tidak support BFD (cek dulu!)
Ringkasan
| Item | Nilai |
|---|---|
| BFD detect | 300 ms |
| BGP fallback | 30 detik |
| Failover real | < 1 detik |
| Cocok untuk | ISP, Kampus, DC, Tambang |