Two 1gig ports Ethernet ought to equal 2gig right?

Problem is it only pings and networks if I pull one of the two cables out. As soon as it establishes a bonded connection again it fails, then works again when I unplug either cable.

Following these instructions https://documentation.clearos.com/content:en_us:kb_howtos_network_bonding
I am able to create a bonded LAN that the ClearOS WebGUI reports as 2000mbps.
The instructions actually specify MODE=5 which does seem to work. However MODE=4 is the true 802.3ad connection requiring a Switch with LAG ports enabled.
The TP-Link TL-SG108E actually has this feature and ClearOS knows if I'm plugged into those ports or non-bonded ports which causes it to complain on the screen connected to the server.

[root@cleare3 ~]# lspci -k | grep Eth -A 3

01:00.0 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06)

	Subsystem: Intel Corporation PRO/1000 PT Dual Port Server Adapter

	Kernel driver in use: e1000e

	Kernel modules: e1000e

01:00.1 Ethernet controller: Intel Corporation 82571EB Gigabit Ethernet Controller (rev 06)

	Subsystem: Intel Corporation PRO/1000 PT Dual Port Server Adapter

	Kernel driver in use: e1000e

	Kernel modules: e1000e

--

03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)

	Subsystem: Micro-Star International Co., Ltd. [MSI] Device 7788

	Kernel driver in use: r8169

	Kernel modules: r8169

[root@cleare3 ~]# cat /proc/net/bonding/bond0

Ethernet Channel Bonding Driver: v3.7.1 (April 27, 2011)



Bonding Mode: IEEE 802.3ad Dynamic link aggregation

Transmit Hash Policy: layer2 (0)

MII Status: up

MII Polling Interval (ms): 100

Up Delay (ms): 0

Down Delay (ms): 0



802.3ad info

LACP rate: slow

Min links: 0

Aggregator selection policy (ad_select): stable

System priority: 65535

System MAC address: 00:15:17:77:d5:e0

Active Aggregator Info:

	Aggregator ID: 1

	Number of ports: 1

	Actor Key: 9

	Partner Key: 1

	Partner Mac Address: 00:00:00:00:00:00



Slave Interface: enp1s0f0

MII Status: up

Speed: 1000 Mbps

Duplex: full

Link Failure Count: 0

Permanent HW addr: 00:15:17:77:d5:e0

Slave queue ID: 0

Aggregator ID: 1

Actor Churn State: none

Partner Churn State: churned

Actor Churned Count: 0

Partner Churned Count: 1

details actor lacp pdu:

    system priority: 65535

    system mac address: 00:15:17:77:d5:e0

    port key: 9

    port priority: 255

    port number: 1

    port state: 77

details partner lacp pdu:

    system priority: 65535

    system mac address: 00:00:00:00:00:00

    oper key: 1

    port priority: 255

    port number: 1

    port state: 1



Slave Interface: enp1s0f1

MII Status: down

Speed: Unknown

Duplex: Unknown

Link Failure Count: 4

Permanent HW addr: 00:15:17:77:d5:e1

Slave queue ID: 0

Aggregator ID: 2

Actor Churn State: monitoring

Partner Churn State: monitoring

Actor Churned Count: 2

Partner Churned Count: 2

details actor lacp pdu:

    system priority: 65535

    system mac address: 00:15:17:77:d5:e0

    port key: 0

    port priority: 255

    port number: 2

    port state: 69

details partner lacp pdu:

    system priority: 65535

    system mac address: 00:00:00:00:00:00

    oper key: 1

    port priority: 255

    port number: 1

    port state: 1

Note one cable unplugged so it works. You can see it's attempting IEEE 802.3ad Dynamic link aggregation.

Here are my config files;

[root@cleare3 ~]# cat /etc/clearos/network.conf

# Network mode

MODE="trustedstandalone"



# Network interface roles

EXTIF="enp3s0"

LANIF="bond0 enp3s0"

DMZIF=""

HOTIF=""



# Domain and Internet Hostname

DEFAULT_DOMAIN="sothcott.co.uk"

INTERNET_HOSTNAME="cleare3.sothcott.co.uk"



# Extra LANS

EXTRALANS=""



# ISP Maximum Speeds



############

[root@cleare3 ~]# cat /etc/sysconfig/network-scripts/ifcfg-bond0

DEVICE=bond0

ONBOOT="yes"

USERCTL="no"

BOOTPROTO="none"

IPADDR="192.168.32.32"

NETMASK="255.255.255.0"

BONDING_MASTER="yes"

BONDING_OPTS="mode=4 miimon=100"



############

[root@cleare3 ~]# cat /etc/sysconfig/network-scripts/ifcfg-enp1s0f0

DEVICE=enp1s0f0

TYPE="Bonded"

ONBOOT="yes"

USERCTL="no"

BOOTPROTO="none"

MASTER="bond0"

SLAVE="yes"



############

[root@cleare3 ~]# cat /etc/sysconfig/network-scripts/ifcfg-enp1s0f1

DEVICE=enp1s0f1

TYPE="Bonded"

ONBOOT="yes"

USERCTL="no"

BOOTPROTO="none"

MASTER="bond0"

SLAVE="yes"

It would be excellent to get this working. I had got this set up in Proxmod which is debian based. It was weird because I could talk to Proxmox over the bonded connection but the ClearOS VM running inside Proxmox on the bonded link had the same problem in needing one cable to be pulled out. This seems to be a ClearOS problem not a hardware problem.