Dell EMC Unity: How To configure LACP on Unity with trunking (User Correctable)

In this knowledge base article we are going to go through the steps and build a 4 port LACP trunk on the Unity array.

For purpose of example, We will be using 4 ports from "I/O Module 0" "Ethernet ports 0-3".
This configuration will consist of a 4 port LACP trunk to SPA, and a second 4 port LACP trunk associated with ports on SPB.

Lets first start by confirming the link ports are physically connected to a switch and online.

In Unity Navigate to the "Settings(Gear) > Access > Ethernet".
Ensure the Links Aggregated="No" and are both "SP A Link"="Link Up" & "SP B Link"="Link Up".

Next In Unity Navigate to the "Settings(Gear) > Access > High Availability"
Under Link Aggregations, create a new Link Aggregation & assign the desired Ethernet Ports. Allocating a port will assign the desired port from both SP to the Link Aggregations. 

NOTE* Only Ethernet Ports currently not configured with no existing interfaces can be assigned to Link Aggregation.

NOTE* Starting on Unity code version 4.2.1, LACP can be created using a combination of both "on board" and "IO module" ports.

Now on the Core network switch side here are the commands to configure the switch ports.
The following ports are used on the network switch for this example, Its likely you will need to adjust the following ports to match your environment.  (Consult with your network admin if you require help).
port 4/1-4  for 4 connections to SP A
port 4/5-8  for 4 connections to SP B
~~~~~~~~~~~~~~~~~~~~~~~~~~
Brief Overview of Network Side Configuration commands.
~~~~~~~~~~~~~~~~~~~~~~~~~~
set port disable 4/1-4    < After this, confirm 4 desired ports on ONE SP are now "Link Down"
set port disable 4/5-8
clear trunk 4/1-8
set vlan 1 4/1-8
set trunk 4/1-4 on dot1q 1-4094   < You must build one trunk for SPA
set trunk 4/5-8 on dot1q 1-4094   < You must build a second trunk for SPB
set spantree portfast 4/1-4 enable trunk
set spantree portfast 4/5-8 enable trunk
set port lacp-channel 4/1-4 mode active    
set port lacp-channel 4/5-8 mode active   
set port enable 4/1-4   
set port enable 4/5-8
exit

~~~~~~~~~~~~~~~~~~~~~~~~~~~
Now here is an extended overview to show each of the above steps (in detail).
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Console> (enable) show port
* = Configured MAC Address.
# = 802.1X Authenticated Port Name.
Port  Name                 Status  Vlan   Duplex Speed       Type
----- ----------------- ---------- ---- ------ ------ ------------
 4/1  _Unity_SPA_M0_P0  connected  1    a-full a-1Gb  10/100/1000
 4/2  _Unity_SPA_M0_P1  connected  1    a-full a-1Gb  10/100/1000
 4/3  _Unity_SPA_M0_P2  connected  1    a-full a-1Gb  10/100/1000
 4/4  _Unity_SPA_M0_P3  connected  1    a-full a-1Gb  10/100/1000
 4/5  _Unity_SPB_M0_P0  connected  1    a-full a-1Gb  10/100/1000
 4/6  _Unity_SPB_M0_P1  connected  1    a-full a-1Gb  10/100/1000
 4/7  _Unity_SPB_M0_P2  connected  1    a-full a-1Gb  10/100/1000
 4/8  _Unity_SPB_M0_P3  connected  1    a-full a-1Gb  10/100/1000

Console> (enable) set port disable 4/1-4
This command may disconnect your Telnet session.
Do you want to continue (y/n) [n]? y
Ports 4/1-4 disabled.
Console> (enable)

At this point In unity confirm 4 ports on 1 SP are "Link Down" status. This will confirm the correct 4 ports are about to be bonded together.

Console> (enable) set port disable 4/5-8
This command may disconnect your Telnet session.
Do you want to continue (y/n) [n]? y
Ports 4/5-8 disabled.
Console> (enable)

Console> (enable) clear trunk 4/1-8
Port(s) 4/1-4 trunk mode set to auto.
Port(s) 4/1-4 trunk type set to negotiate.
Port(s) 4/5-6 trunk mode set to auto.
Port(s) 4/5-6 trunk type set to negotiate.
Port(s) 4/7-8 trunk mode set to auto.
Port(s) 4/7-8 trunk type set to negotiate.

Console> (enable) set trunk 4/1-4 on dot1q 1-4094
Vlan(s) 1-4094 already allowed on the trunk
Please use the 'clear trunk' command to remove vlans from allowed list.
Port(s) 4/1-4 trunk mode set to on.
Port(s) 4/1-4 trunk type set to dot1q.

Console> (enable) set trunk 4/5-8 on dot1q 1-4094
Vlan(s) 1-4094 already allowed on the trunk
Please use the 'clear trunk' command to remove vlans from allowed list.
Port(s) 4/5-8 trunk mode set to on.
Port(s) 4/5-8 trunk type set to dot1q.

Console> (enable) set vlan 1 4/1-8
VLAN  Mod/Ports
---- -----------------------
1     4/1-9,4/41-42
      5/9-12
Console> (enable) set spantree portfast 4/1-4 enable trunk

Warning: Connecting Layer 2 devices to a fast start port can cause
temporary spanning tree loops. Use with caution.

Spantree ports 4/1-4 fast start enabled.
Console> (enable) set spantree portfast 4/5-8 enable trunk

Warning: Connecting Layer 2 devices to a fast start port can cause
temporary spanning tree loops. Use with caution.

Spantree ports 4/5-8 fast start enabled.

NOTE* a LACP trunk configured on the switch should never span across ports on different SPs. You must configure one trunk for ports on SPA, then a second trunk for the ports on SPB.

Console> (enable) set port lacp-channel 4/1-4 mode active
Port(s) 4/1-4 channel mode set to active.

Console> (enable) set port lacp-channel 4/5-8 mode active
Port(s) 4/5-8 channel mode set to active.

Console> (enable) set port enable 4/1-4
Ports 4/1-4 enabled.
Console> (enable) set port enable 4/5-8
Ports 4/5-8 enabled.

Console> (enable)

Console> (enable) show port lacp-channel
Port   Admin Channel LACP Port  Ch   Partner Oper                    Partner
       key   Mode    Priority   id   Sys ID                          Port
------ ----- ------- --------- ---- -------------------------------- -------
 4/1    718  active     128    1762  65535:00-60-16-74-da-a0            1
 4/2    718  active     128    1762  65535:00-60-16-74-da-a0            3
 4/3    718  active     128    1762  65535:00-60-16-74-da-a0            4
 4/4    718  active     128    1762  65535:00-60-16-74-da-a0            2
------ ----- ------- --------- ---- -------------------------------- -------
 4/5    721  active     128    1764  65535:00-60-16-74-d2-f8            2
 4/6    721  active     128    1764  65535:00-60-16-74-d2-f8            1
 4/7    721  active     128    1764  65535:00-60-16-74-d2-f8            4
 4/8    721  active     128    1764  65535:00-60-16-74-d2-f8            3

Console> (enable) show lacp-channel mac
Channel  Rcv-Unicast          Rcv-Multicast        Rcv-Broadcast
-------- -------------------- -------------------- --------------------
1762                       48                 1305                   25
1764                        0                   90                    0

Channel  Xmit-Unicast         Xmit-Multicast       Xmit-Broadcast
-------- -------------------- -------------------- --------------------
1762                       71                 8458                 4573
1764                       24                 2134                 3848

Channel  Rcv-Octet            Xmit-Octet
-------- -------------------- --------------------
1762                   165179              1570119
1764                    10925               555415

Channel  Dely-Exced MTU-Exced  In-Discard Lrn-Discrd In-Lost    Out-Lost
-------- ---------- ---------- ---------- ---------- ---------- ----------
1762              0          -         22          0          0          0
1764              0          -          0          0          0          0
Console> (enable) show spantree 1 active
VLAN 1
Spanning tree disabled

Bridge ID MAC ADDR          00-d0-05-40-30-00
Bridge ID Priority          32768
Bridge Max Age 20 sec   Hello Time 2  sec   Forward Delay 15 sec

Port                     State         Role Cost      Prio Type
------------------------ ------------- ---- --------- ---- --------------------
4/1-4                    forwarding    DESG         8   32 P2P
4/5-8                    forwarding    DESG         8   32 P2P
 5/1                     forwarding    DESG         4   32 P2P
Console> (enable)


Now on Unity side, Create a FSN "Fail Safe Network" on top of the LACP trunk (if desired).

At this point, the system is ready for a new interface to be built on the LACP trunk. This interface can be used for a "NAS server" or "replication" interface. please be sure to assign the correct VLAN tag to the Interface.

NOTE* iSCSI interfaces are not supported on a LACP trunk.

The newly created interface should be able to be pinged from the externally from the environment.

Reference other KBs that can be helpful.
KB000488597 "Unity : How to change LACP trunk/bond load balancing algorithm (DELL/EMC Correctable)"
KB000495576 "Unity - None LACP type Bonds are unsupported (Customer Correctable)"
KB000494164 "Unity SFTP does not work when LACP is enabled"
KB000496659 "Unity: Switch requirements for configuring LACP on Unity ports (User Correctable)"

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