This command modifies a trunk for link aggregation on a switch.

Syntax   trunk-modify

name name-string

Specify the name for the trunk configuration.

ports port-list

Specify the port number(s) for the link(s) to aggregate into the trunk.

Specify any of the following options:

speed disable|100m|1g|10g|40g|50g|100g

Specify the port speed or disable the port.

egress-rate-limit unlimited

Specify an egress rate limit for the configuration.


Specify if you want the physical port to autonegotiate port speed.


Specify if the port can receive jumbo frames.

lacp-mode off|passive|active

Specify the Link Aggregation Control Protocol (LACP) mode for the configuration.

lacp-priority number

Specify the LACP priority. This is a number between 1, and 65535 with a default value of 32768.

lacp-timeout slow|fast

Specify the LACP time out as slow (30 seconds) or fast (4 seconds). The default value is slow.

lacp-fallback bundle|individual

Specify the LACP fallback mode as individual or bundled.

lacp-fallback-timeout seconds

Specify the LACP fallback timeout in seconds. The range is between 30, and 60 seconds with a default value of 50 seconds.


Specify physical port reflection


Specify if the switch is an edge switch.


Specify if pause frames are sent.

description description-string

Specify the trunk description. 

Note:  If you add ports to the trunk, the trunk description applies to the new ports. If you remove ports from the trunk, the description is removed from the ports.


Specify loopback if you want to use loopback.


Specify if a VXLAN can terminate on the trunk.

unknown-ucast-level unknown-ucast-level-string

Specify an unknown unicast level in percent. The default value is 100%.

unknown-mcast-level unknown-mcast-level-string

Specify an unknown multicast level in percent. The default value is 100%.

broadcast-level broadcast-level-string

Specify a broadcast level in percent. The default value is 100%.

port-mac-address mac-address

Specify the MAC address of the port.

loop-vlans vlan-list

Specify a list of VLANS for looping.


Specify if the port participates in routing on the network.


Enable or disable host facing ports.


Specify to delay bringing up the host.

dscp-map dscp-map name|none

Specify the DSCP map name to enable on a port


Specify local-switching or no-local-switching. A no-local-switching port cannot bridge traffic to another no-local-switching port

allowed-tpid q-in-q|q-in-q-old

Specify an allowed TPID in addition to 0x8100 for VLAN headers.


Specify if fabric guard is enabled.


Specify Port Forwarding Error Correction (FEC) mode.

Defaults   None

Access   CLI


Version 1.2

Command introduced.

Version 1.2.6

The optional parameter lacp-mode added.

Version 2.1

The parameter id is deprecated. The parameters enable | disable, lacp-priority, lacp-timeout, reflect, edge-switch, pause, description, loopback, mirror-receive, port-mac and send-port added.

Version 2.2.5

The parameters unknown-ucast-level, unknown-mcast-level, and broadcast-level added.

Version 2.2.6

The parameter egress-rate-limit added.

Version 2.3

The parameters auto-neg, eth-mode, and reflect deprecated.The parameters rem-rswitch-port, and routing added.

Version 2.4

The parameter enable|disable deprecated. The parameters loop-vlans, and host-enable added.

Version 2.5.3

The parameters reflect|noreflect, dscp-map dscp-map name|none, and local-switching|no-local-switching added.

Version 2.6.2

The parameter vxlan-termination, allowed-tpid, and fabric-guard added. The parameter mirror-receive-only deprecated.

Version 3.0.0

The parameter autoneg|no-autoneg added.

Version 3.1.0

The parameter fec|no-fec added.

Version 5.1.0

The parameters bw-bps, and rem-rswitch-port-mac deprecated. The parameter defer-bringup|no-defer-bringup added.

Version 7.0.0

The parameter description added.

Usage   Trunks can be used to aggregate network links at Layer 2 on the local switch. Use this command to modify the links for a trunk.

Examples  To modify a trunk with the name trunk-476, and to aggregate the links connected to ports 11, 21, and 31.

CLI (network-admin@switch) > trunk-modify name trunk-476 port 11,21,31