Users Guide

Network Administration: Spanning Tree and LAG 197
FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Dell Astute\User
Guide\Dell_Astute_Network_Admin_STP.fm
DELL CONFIDENTIAL – PRELIMINARY 8/9/16 - FOR PROOF ONLY
• Auto-negotiation mode is not configured on the port.
• The port is in full-duplex mode.
• All ports in the LAG have the same ingress filtering and tagged modes.
• All ports in the LAG have the same back pressure and flow control modes.
• All ports in the LAG have the same priority.
• All ports in the LAG have the same transceiver type.
• The device supports up to 12 LAGs, and eight ports in each LAG.
• Ports can be configured as LACP ports only if the ports are not part of a
previously configured LAG.
Ports added to a LAG lose their individual port configuration. When ports are
removed from the LAG, the original port configuration is applied to the ports.
The device uses a hash function to assign packets to a LAG member. The
hash function statistically load-balances the aggregated link members. The
device considers a LAG to be a single logical port.
Aggregate ports can be linked into link-aggregation port-groups. Each group
comprises ports with the same speed, set to full-duplex operations.
LAG Membership
Each device supports up to 12 LAGs per system, and eight ports per LAG.
When you add a port to a LAG, the port acquires the LAG’s properties. If the
port cannot be configured with the LAG’s properties, it is not added to the
LAG and an error message is generated.
If the first port joining the LAG cannot be configured with the LAG settings,
the port is added to the LAG, using the port default settings, and an error
message is generated. Since this is the only port in the LAG, the entire LAG
operates with the port’s settings, instead of the LAG’s defined settings.
To manually select ports that comprise a LAG:
1
Click Network Administration > Spanning Tree and LAG > Link
Aggregation (LAG)
> LAG Membership .
The LACP parameters for all ports are displayed.
2 Click Edit .
3 Select a LAG.