Hi all,
I’m running two Proxmox nodes with Intel E810-C-Q2 NICs (100 Gbps ports split into 8×10 Gbps breakout interfaces). I’ve configured multiple 802.3ad LACP bonds on each node for different networks (VM traffic, Ceph, PBS backups, etc.).
NIC details:
Intel E810-C-Q2
Ports split into 8×10 Gbps links via breakout cables
Connected to a UniFi aggregation switch that supports LACP
Problem:
As soon as I configure the bonds on the Proxmox side and match them in UniFi (LACP groups), the UniFi switch starts showing STP blocking on some of these ports. This is affecting network performance and sometimes dropping connections between nodes.
Proxmox /etc/network/interfaces (Node 1 example):
auto bond0
iface bond0 inet manual
bond-slaves ens1f0np0 ens1f1np1 ens1f2np2 ens1f3np3
bond-miimon 100
bond-mode 802.3ad
bond-xmit-hash-policy layer2
auto bond1
iface bond1 inet manual
bond-slaves eno3 eno4
bond-miimon 100
bond-mode 802.3ad
bond-xmit-hash-policy layer3+4
bond-updelay 200
bond-lacp-rate 1
bond-downdelay 200
auto bond2
iface bond2 inet manual
bond-slaves ens1f4np4 ens1f5np5 ens1f6np6 ens1f7np7
bond-miimon 100
bond-mode 802.3ad
bond-xmit-hash-policy layer3+4
I’m running two Proxmox nodes with Intel E810-C-Q2 NICs (100 Gbps ports split into 8×10 Gbps breakout interfaces). I’ve configured multiple 802.3ad LACP bonds on each node for different networks (VM traffic, Ceph, PBS backups, etc.).
NIC details:
Intel E810-C-Q2
Ports split into 8×10 Gbps links via breakout cables
Connected to a UniFi aggregation switch that supports LACP
Problem:
As soon as I configure the bonds on the Proxmox side and match them in UniFi (LACP groups), the UniFi switch starts showing STP blocking on some of these ports. This is affecting network performance and sometimes dropping connections between nodes.
Proxmox /etc/network/interfaces (Node 1 example):
auto bond0
iface bond0 inet manual
bond-slaves ens1f0np0 ens1f1np1 ens1f2np2 ens1f3np3
bond-miimon 100
bond-mode 802.3ad
bond-xmit-hash-policy layer2
auto bond1
iface bond1 inet manual
bond-slaves eno3 eno4
bond-miimon 100
bond-mode 802.3ad
bond-xmit-hash-policy layer3+4
bond-updelay 200
bond-lacp-rate 1
bond-downdelay 200
auto bond2
iface bond2 inet manual
bond-slaves ens1f4np4 ens1f5np5 ens1f6np6 ens1f7np7
bond-miimon 100
bond-mode 802.3ad
bond-xmit-hash-policy layer3+4