konfigurasi Etherchannel Layer 3

Berikut konfigurasi EtherChannel Layer-3 (routed Port-Channel) pakai LACP (paling umum) untuk link antar L3 switch / ke router.

Catatan: Harus di perangkat yang mendukung no switchport (L3). Kalau switch L2 (mis. banyak 2960), L3 EtherChannel tidak bisa.

Contoh topologi

• 2 link fisik: Gi0/1 dan Gi0/2
• Port-channel: Po1
• IP point-to-point: 10.10.10.0/30
  • Switch A = 10.10.10.1/30
  • Switch B = 10.10.10.2/30

Konfigurasi di Switch A

enable
conf t
interface range gi0/1 - 2
 no switchport
 channel-group 1 mode active
 no shutdown
exit

interface port-channel 1
 no switchport
 ip address 10.10.10.1 255.255.255.252
 no shutdown
end
wr mem

Konfigurasi di Switch B

enable
conf t
interface range gi0/1 - 2
 no switchport
 channel-group 1 mode active
 no shutdown
exit

interface port-channel 1
 no switchport
 ip address 10.10.10.2 255.255.255.252
 no shutdown
end
wr mem

Verifikasi

Jalankan di kedua sisi:

show etherchannel summary
show lacp neighbor
show ip interface brief | include Port-channel
show interfaces port-channel 1

Tes koneksi:

• Dari Switch A:

ping 10.10.10.2

Indikator normal:

• Po1 status (SU) dan member port bertanda (P)
• Port-channel up/up dan ping berhasil.

(Opsional) Routing lewat Port-Channel

Static route contoh

conf t
ip route 0.0.0.0 0.0.0.0 10.10.10.2
end

OSPF contoh

conf t
router ospf 1
 network 10.10.10.0 0.0.0.3 area 0
end

Troubleshooting cepat kalau “suspended / not bundled”

• Pastikan kedua sisi sama-sama LACP (mode active/passive, minimal 1 sisi active)
• Semua member port harus sama speed/duplex
• Jangan ada switchport mode trunk/access (karena ini L3, harus no switchport)
• Cek:

show interfaces gi0/1 etherchannel
show run interface gi0/1
show log | include EC|LACP

Kalau kamu sebutkan model switch + port yang dipakai, aku bisa sesuaikan syntax-nya (Gi/Fa, dan kebutuhan routingnya).