Difference between revisions of "Mikrotik: BFD Deteksi Link Failure"

From OnnoWiki
Jump to navigation Jump to search
Line 18: Line 18:
 
  /system resource print
 
  /system resource print
  
 +
{| class="wikitable"
 +
|-
 +
! RouterOS !! Status
 +
|-
 +
| v6.43+  || BFD tersedia
 +
| v7.x    || BFD '''lebih stabil & recommended''
 +
|}
  
−
| RouterOS | Status                            |
 
−
| -------- | ---------------------------------- |
 
−
| v6.43+  | BFD tersedia                      |
 
−
| v7.x    | BFD **lebih stabil & recommended** |
 
  
−
---
 
  
−
## 2️⃣ Konfigurasi BFD (WAJIB)
+
==2️⃣ Konfigurasi BFD (WAJIB)==
  
−
### Contoh Parameter Aman & Cepat
+
===Contoh Parameter Aman & Cepat===
  
−
```bash
 
−
/routing bfd configuration
 
−
add interfaces=ether1 min-tx=100ms min-rx=100ms multiplier=3
 
−
```
 
  
−
📌 Artinya:
+
/routing bfd configuration
 +
add interfaces=ether1 min-tx=100ms min-rx=100ms multiplier=3
 +
 
 +
Artinya:
  
 
* Kirim paket tiap **100 ms**
 
* Kirim paket tiap **100 ms**
Line 43: Line 44:
 
⚠️ Jangan pakai <50ms di wireless jelek
 
⚠️ Jangan pakai <50ms di wireless jelek
  
−
---
 
  
−
## 3️⃣ Aktifkan BFD di Peer BGP (RouterOS v7)
 
  
−
```bash
+
==3️⃣ Aktifkan BFD di Peer BGP (RouterOS v7)==
−
/routing bgp connection
+
 
−
set [find name=peer-ISP] bfd=yes
+
 
−
```
+
/routing bgp connection
 +
set [find name=peer-ISP] bfd=yes
 +
 
  
 
Atau saat membuat peer:
 
Atau saat membuat peer:
  
−
```bash
+
/routing bgp connection
−
/routing bgp connection
+
add name=peer-ISP \
−
add name=peer-ISP \
+
    remote.address=192.168.10.1 \
−
    remote.address=192.168.10.1 \
+
    remote.as=65001 \
−
    remote.as=65001 \
+
    local.as=65000 \
−
    local.as=65000 \
+
    bfd=yes
−
    bfd=yes
 
−
```
 
  
−
---
 
  
−
## 4️⃣ (Opsional) Percepat Timer BGP
+
==4️⃣ (Opsional) Percepat Timer BGP==
  
−
Jika **tanpa BFD**, timer ini penting
+
* Jika **tanpa BFD**, timer ini penting
−
Jika **pakai BFD**, timer ini *backup only*
+
* Jika **pakai BFD**, timer ini ''backup only''
  
−
```bash
+
/routing bgp connection
−
/routing bgp connection
+
set peer-ISP keepalive-time=10s hold-time=30s
−
set peer-ISP keepalive-time=10s hold-time=30s
 
−
```
 
  
−
---
 
  
−
## 5️⃣ Verifikasi BFD (WAJIB)
+
==5️⃣ Verifikasi BFD (WAJIB)==
  
−
### Cek Status BFD
+
===Cek Status BFD===
  
−
```bash
+
/routing bfd session print
−
/routing bfd session print
 
−
```
 
  
 
Status normal:
 
Status normal:
  
−
```
+
state=up
−
state=up
 
−
```
 
  
 
Jika:
 
Jika:
  
−
```
+
state=down
−
state=down
 
−
```
 
  
 
➡️ BGP **langsung disconnect**
 
➡️ BGP **langsung disconnect**
  
−
---
 
  
−
## 6️⃣ Test Fast Failover
 
  
−
### Cara Aman Test
+
==6️⃣ Test Fast Failover==
 +
 
 +
===Cara Aman Test===
  
 
* Cabut kabel fiber
 
* Cabut kabel fiber
Line 111: Line 100:
 
Pantau:
 
Pantau:
  
−
```bash
+
/routing bgp session print
−
/routing bgp session print
+
/ip route print where bgp
−
/ip route print where bgp
 
−
```
 
  
−
⏱️ Harus turun **< 1 detik**
 
  
−
---
+
⏱️ Harus turun '''< 1 detik'''
  
−
## 7️⃣ Topologi Paling Umum (Dual Link)
+
 
 +
==7️⃣ Topologi Paling Umum (Dual Link)==
  
 
![Image](https://data-discourse.cdn.mikrotik.com/original/3X/8/8/88994367cafc6525e7606588f6faad1b9a15b694.png?utm_source=chatgpt.com)
 
![Image](https://data-discourse.cdn.mikrotik.com/original/3X/8/8/88994367cafc6525e7606588f6faad1b9a15b694.png?utm_source=chatgpt.com)
Line 128: Line 115:
 
![Image](https://www.researchgate.net/publication/335142069/figure/fig3/AS%3A1095918434684930%401638298724943/OpenFlow-fast-failover-group-BFD-bidirectional-forwarding-detection-LOS-loss-of-signal.png?utm_source=chatgpt.com)
 
![Image](https://www.researchgate.net/publication/335142069/figure/fig3/AS%3A1095918434684930%401638298724943/OpenFlow-fast-failover-group-BFD-bidirectional-forwarding-detection-LOS-loss-of-signal.png?utm_source=chatgpt.com)
  
−
---
 
  
−
## 8️⃣ Best Practice BFD di MikroTik
+
 
 +
==8️⃣ Best Practice BFD di MikroTik==
  
 
✔️ Gunakan **RouterOS v7**
 
✔️ Gunakan **RouterOS v7**
Line 137: Line 124:
 
✔️ Kombinasikan dengan **ECMP** bila multi-link
 
✔️ Kombinasikan dengan **ECMP** bila multi-link
  
−
---
 
  
−
## 🔥 Rekomendasi Setting Cepat & Stabil
+
==Rekomendasi Setting Cepat & Stabil==
  
−
```bash
+
/routing bfd configuration
−
/routing bfd configuration
+
add interfaces=ether1 min-tx=100ms min-rx=100ms multiplier=3
−
add interfaces=ether1 min-tx=100ms min-rx=100ms multiplier=3
 
  
−
/routing bgp connection
+
/routing bgp connection
−
set peer-ISP bfd=yes keepalive-time=10s hold-time=30s
+
set peer-ISP bfd=yes keepalive-time=10s hold-time=30s
−
```
 
  
−
---
 
  
−
## ⛔ Kesalahan Umum
+
==Kesalahan Umum==
  
 
❌ Lupa enable `bfd=yes` di BGP peer
 
❌ Lupa enable `bfd=yes` di BGP peer
 
❌ Timer BFD terlalu kecil → flapping
 
❌ Timer BFD terlalu kecil → flapping
−
❌ Peer ISP **tidak support BFD** (cek dulu!)
+
❌ 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 |
 
−
 
 
−
---
 
  
−
Kalau mau, saya bisa:
 
  
−
* Buat **template MikroTik v6 vs v7**
+
==Ringkasan==
−
* Sesuaikan **latency radio / fiber**
 
−
* Simulasi **dual ISP + ECMP**
 
−
* Bandingkan **BFD vs Netwatch vs Script**
 
  
−
Tinggal sebutkan:
+
{| class="wikitable"
−
👉 RouterOS versi
+
|-
−
👉 Jenis link (fiber / radio / LTE)
+
! Item          !! Nilai
−
👉 Single atau dual ISP
+
|-
 +
| BFD detect    || 300 ms
 +
| BGP fallback  || 30 detik
 +
| Failover real || < 1 detik
 +
| Cocok untuk  || ISP, Kampus, DC, Tambang
 +
|}

Revision as of 18:46, 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)

![Image](https://data-discourse.cdn.mikrotik.com/original/3X/8/8/88994367cafc6525e7606588f6faad1b9a15b694.png?utm_source=chatgpt.com)

![Image](https://i.imgur.com/huowhnq.png?utm_source=chatgpt.com)

![Image](https://www.researchgate.net/publication/335142069/figure/fig3/AS%3A1095918434684930%401638298724943/OpenFlow-fast-failover-group-BFD-bidirectional-forwarding-detection-LOS-loss-of-signal.png?utm_source=chatgpt.com)


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
Retrieved from "https://onnocenter.or.id/wiki/index.php?title=Mikrotik:_BFD_Deteksi_Link_Failure&oldid=73010"