Network Configuration

# Ensure NetworkManager is running
sudo systemctl enable --now NetworkManager

# Disable legacy network service if present
sudo systemctl disable network

# Create connection for storage interface
sudo nmcli connection add type ethernet \
    con-name storage-iscsi-1 \
    ifname ens1f0 \
    ipv4.method manual \
    ipv4.addresses 10.100.1.101/24 \
    ipv4.never-default yes \
    ipv4.may-fail no \
    802-3-ethernet.mtu 9000 \
    connection.autoconnect yes \
    connection.autoconnect-priority 10

# Optimize for storage
sudo nmcli connection modify storage-iscsi-1 \
    ethtool.ring-rx 4096 \
    ethtool.ring-tx 4096 \
    ethtool.coalesce-rx-usecs 50 \
    ethtool.coalesce-tx-usecs 50

# Activate
sudo nmcli connection up storage-iscsi-1

# Repeat for second interface
sudo nmcli connection add type ethernet \
    con-name storage-iscsi-2 \
    ifname ens1f1 \
    ipv4.method manual \
    ipv4.addresses 10.100.2.101/24 \
    ipv4.never-default yes \
    ipv4.may-fail no \
    802-3-ethernet.mtu 9000 \
    connection.autoconnect yes \
    connection.autoconnect-priority 10

sudo nmcli connection up storage-iscsi-2

# Verify MTU
ip link show ens1f0 | grep mtu

# Test MTU (jumbo frames)
ping -M do -s 8972 <storage_portal_ip>