April 26, 20188 yr I am using a 3705g switch. I have 4 nic’s in server. In testing I can’t get it to work. I need assistance. I ran the four cables to swich. Port g1/0/1-4. Created port channel. Added those four ports to group and used mode on ( also tried auto). Then went to unraid and picked option 3( I think not in front of computer) for 802.3ad. Then I can no longer ssh to server. Looses all connectivity. I have to physically go to server and unplug three of the cables and it starts working again. Can somebody walk me through with proper steps to set up lag channels from unraid?
April 26, 20188 yr Plugin the cable to eth0. Unplug the cables to eth1, 2 and 3. Enable bonding on eth0. Disable bonding on eth1, 2 and 3. Add eth1, 2 and 3 as members of the bond (bond0) that already includes eth0. Set bonding mode to 4 (not 3). Turn on Help in the GUI for more information. Enable bridging if you want it. Configure your switch (I have no experience of Cisco equipment - I hear it's generally very versatile and capable but complex to configure). You probably have to reboot your switch so it's probably worth rebooting your server too. Plug in the other three cables. Loss of connectivity when multiple NICs are connected, but normal connectivity when only one is connected, usually means a packet storm (the Ethernet equivalent of a howl-round) and is caused by misconfiguration of either the bond or the switch.
May 16, 20197 yr I have a similar setup and I had issues with bonding interfaces in 802.3ad/LACP. Port Channel Config interface Port-channel44 description unRAID-Storage switchport mode access spanning-tree portfast Interface Config interface GigabitEthernet0/13 description unRaid - eth1,2 switchport mode access speed 1000 duplex full channel-protocol lacp channel-group 44 mode active spanning-tree portfast ! interface GigabitEthernet0/14 description unRaid - eth1,2 switchport mode access speed 1000 duplex full channel-protocol lacp channel-group 44 mode active spanning-tree portfast ! In unRaid I set the first interface config to: Enable Bonding = Yes Bonding Mode = 802.3ad (4) Enable Bridging = No <<<<-- VERY IMPORTANT If you also want to setup vlans (802.1q/dot1q) you would also need to set the switchport mode to trunk interface Port-channel44 description unRAID-Storage switchport trunk encapsulation dot1q switchport mode trunk ! It goes without saying that this is an advanced config and goes a bit beyond your question. If you are using vlans, the base interface ip addresses are for the default/untagged network. By default that would be vlan id 1 but it can be changed to another by setting the native vlan in the port channel interface config. switchport trunk native vlan 1 I hope this helps.
October 19, 20205 yr Thank you, your post was perfect got lacp bonding working quickly. I can conform this works on a Cisco 3560G switch with 4 NICS
March 25, 20215 yr Question, if I set the bonding mode to NO as indicated, how do you access VMs now? They pull the 122.X network address due to BR0 going away from using that setting.
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