Bird Percobaan

6 August 2026 Linux

Install ifupdown2

apt install ifupdown2

Tambahkan script disable rpf filter

nano /etc/network/if-up.d/00-disable-rpf

Masukkan:

#!/bin/sh
# Matikan RPF pada interface yang sedang dinaikkan (UP)
if [ -n "$IFACE" ] && [ -f "/proc/sys/net/ipv4/conf/$IFACE/rp_filter" ]; then
    echo 0 > "/proc/sys/net/ipv4/conf/$IFACE/rp_filter"
fi

Izinkan execute

chmod +x /etc/network/if-up.d/00-disable-rpf

Install iftop

apt install iftop

Install bmon

apt install bmon

Install conntrack

apt install conntrack

command untuk check jumalah connection tracking (aktif/tidak): conntrack -L

Install lldp

apt install lldpd

melihat service lldpd

systemctl status lldpd

Perintah operasional

lldpctl

Konfigurasi lldpd

sudo nano /etc/lldpd.d/custom.conf

Masukkan, dan sesuaikan:

# Mengatur agar LLDP hanya berjalan pada interface fisik/bond tertentu
configure system interface pattern enp*,bond*,eno*

Install mactelnet-client

apt install mactelnet-client

Memindaai perangkat MikroTik yang terhubung ke Layer 2 domain yang sama

mactelnet -l

Melakukan remote mac-telnet ke tujuan tertentu

mactelnet  b2:ae:34:97:67:39

Install mactelnet-server

sudo apt update
sudo apt install mactelnet-server

Tambahkan user agar bisa login lewat mactelnet-server

mactelnetd -a

Pastikan user yang dibuat ada di sistem (sama)

Install ipcalc dan ipcalc-ng

apt install ipcalc ipcalc-ng

Instal softflowd

apt install softflowd

Menjalankan beberapa instance interface sekaligus (memonitor beberapa interface sekaligus)

softflowd -i eno1 \
          -n 192.168.10.5:2055 \
          -v 9 \
          -L 1 \
          -c /var/run/softflowd.eno1.ctl \
          -p /var/run/softflowd.eno1.pid
softflowd -i eno1.201 \
          -n 192.168.10.5:2055 \
          -v 9 \
          -L 201 \
          -c /var/run/softflowd.eno1.201.ctl \
          -p /var/run/softflowd.eno1.201.pid

Melihat instance yang sedang berjalan

ps aux | grep softflowd

Stop insnace yang sedang berjalan

softflowctl -c /var/run/softflowd.eno1.ctl shutdown
softflowctl -c /var/run/softflowd.eno1.201.ctl shutdown

Menjalankan multiple instance softflowd menggunakan systemd

Set freq cpu ke performance

sudo apt update
apt install linux-cpupower
cpupower frequency-set -g performance

Verifikasi

cpupower frequency-info

Install dan konfigurasi SNMP

Tambahkan contrib dan non-free pada repository

sed -i 's/main non-free-firmware/main contrib non-free non-free-firmware/g' /etc/apt/sources.list

Update repository

apt update

Isntall snmpd dan snmp-mibs-downloader

apt install snmpd snmp-mibs-downloader -y

Unduh file MIBs

download-mibs

Salin konfigurasi original

cp /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.bak

Konfigurasi baru

nano /etc/snmp/snmpd.conf

Masukkan:

###########################################################################
# SYSTEM INFORMATION
###########################################################################
sysLocation    POP-CGK-Datacenter
sysContact     Fariz <[email protected]>
# 72 = Internet (Layer 3 Router) + Applications (Layer 7)
sysServices    72

###########################################################################
# AGENT OPERATING MODE
###########################################################################
# Aktifkan master agentx untuk integrasi daemon lain jika diperlukan
master  agentx

# Bandingkan IP di bawah: Listen di localhost dan IP Interface Management/Loopback Router Anda
# Ganti 10.10.10.1 dengan IP Router yang dapat diakses oleh NMS Anda
agentaddress udp:127.0.0.1:161,udp:10.120.108.19:161

###########################################################################
# BIRD & ROUTER PERFORMANCE OPTIMIZATION (SANGAT PENTING)
###########################################################################
# Mencegah CPU 100% saat NMS melakukan snmpwalk pada router dengan BGP Full Feed
dontLogTCPWrappersConnects yes
skipNFSInHostResources yes

###########################################################################
# ACCESS CONTROL (VIEWS & COMMUNITY)
###########################################################################
# Buat view 'all' agar NMS bisa membaca seluruh statistik (termasuk Interface & BIRD)
view all included .1 80

# --- OPSI A: SNMPv2c dengan ACL Terbatas (Paling Umum Digunakan) ---
# Format: rocommunity <COMMUNITY_NAME> <IP_NMS/SUBNET> -V <VIEW>
# Ganti 'RAHASIA_COMMUNITY' dan IP '192.168.100.50/32' (IP NMS/Observium/LibreNMS Anda)
rocommunity RAHASIA_COMMUNITY 127.0.0.1/32 -V all
rocommunity RAHASIA_COMMUNITY 10.0.0.0/8 -V all
rwcommunity yyy 127.0.0.1/32
# --- OPSI B: SNMPv3 User (Paling Aman / Enkripsi) ---
# Aktifkan jika Anda menggunakan SNMPv3 (User dibuat via net-snmp-create-v3-user)
# rouser nmsuser authpriv -V all

###########################################################################
# INTEGRASI EXTENSION (BIRD MONITORING)
###########################################################################
# Mengaktifkan monitoring BIRD via skrip pendorong (diaktifkan jika menggunakan LibreNMS/Observium)
extend bird /usr/local/bin/bird-snmp

# Include file konfigurasi tambahan dari folder snmpd.conf.d jika ada
includeDir /etc/snmp/snmpd.conf.d

Restart service snmpd

systemctl restart snmpd

Install paket snmp agar bisa menjalankan perintah snmpwalk

apt update
apt install snmp -y

Test/verifikasi

snmpwalk -v2c -c RAHASIA_COMMUNITY 127.0.0.1 IF-MIB::ifName

snmp-alias

Set SNMP ifAlias

Install tcconfig

Limitasi Bandwidth Di Linux Menggunakan tcconfig

Install iperf3

apt install iperf3

Ketika muncul pilihan running as daemon pilih ‘no’

Install ethtool

apt install ethtool

Disini saya menggunakan NIC Intel X710-da2 dan processor intel i5-9500 6c/6t dan debian 13

Secara default sudah aktif beberapa offload seperti TSO, GSO, GRO

~# ethtool -k enp1s0f0np0
Features for enp1s0f0np0:
rx-checksumming: on
tx-checksumming: on
        tx-checksum-ipv4: off [fixed]
        tx-checksum-ip-generic: on
        tx-checksum-ipv6: off [fixed]
        tx-checksum-fcoe-crc: off [fixed]
        tx-checksum-sctp: on
scatter-gather: on
        tx-scatter-gather: on
        tx-scatter-gather-fraglist: off [fixed]
tcp-segmentation-offload: on
        tx-tcp-segmentation: on
        tx-tcp-ecn-segmentation: on
        tx-tcp-mangleid-segmentation: off
        tx-tcp6-segmentation: on
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off [fixed]
rx-vlan-offload: on
tx-vlan-offload: on
ntuple-filters: on
receive-hashing: on
highdma: on
rx-vlan-filter: on [fixed]
vlan-challenged: off [fixed]
tx-gso-robust: off [fixed]
tx-fcoe-segmentation: off [fixed]
tx-gre-segmentation: on
tx-gre-csum-segmentation: on
tx-ipxip4-segmentation: on
tx-ipxip6-segmentation: on
tx-udp_tnl-segmentation: on
tx-udp_tnl-csum-segmentation: on
tx-gso-partial: on
tx-tunnel-remcsum-segmentation: off [fixed]
tx-sctp-segmentation: off [fixed]
tx-esp-segmentation: off [fixed]
tx-udp-segmentation: on
tx-gso-list: off [fixed]
tx-nocache-copy: off
loopback: off
rx-fcs: off [fixed]
rx-all: off [fixed]
tx-vlan-stag-hw-insert: off [fixed]
rx-vlan-stag-hw-parse: off [fixed]
rx-vlan-stag-filter: off [fixed]
l2-fwd-offload: off
hw-tc-offload: off
esp-hw-offload: off [fixed]
esp-tx-csum-hw-offload: off [fixed]
rx-udp_tunnel-port-offload: on
tls-hw-tx-offload: off [fixed]
tls-hw-rx-offload: off [fixed]
rx-gro-hw: off [fixed]
tls-hw-record: off [fixed]
rx-gro-list: off
macsec-hw-offload: off [fixed]
rx-udp-gro-forwarding: off
hsr-tag-ins-offload: off [fixed]
hsr-tag-rm-offload: off [fixed]
hsr-fwd-offload: off [fixed]
hsr-dup-offload: off [fixed]

dan fitur akselerasi cpu yang didukung

~# lscpu | grep -i "flags"
Flags:                                   fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb pti ssbd ibrs ibpb stibp tpr_shadow flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp vnmi md_clear flush_l1d arch_capabilities

Mengecek Ring Buffer saat ini

ethtool -g enp1s0f0np0

Cara Membaca Outputnya:

  • Pre-set maximums: Nilai batas maksimum ukuran buffer yang didukung oleh hardware/chipset NIC Anda (misal Rx: 4096, Tx: 4096 atau 2048).
  • Current hardware settings: Ukuran buffer yang sedang aktif saat ini.

Perintah Menaikkan Ring Buffer ke 4096 (Disarankan).
Menggunakan 4096 memberikan safety margin yang sangat luas tanpa mengonsumsi RAM yang berlebihan:

ethtool -G enp1s0f0np0 rx 4096 tx 4096
ethtool -G enp1s0f1np1 rx 4096 tx 4096

Buat agar persistence

Fariz Anwar

IT / Network Enthusiast | Debian Addict