Deployment Guide

When an aggregator powers up, it monitors known TCP ports for iSCSI storage devices on all interfaces. When a session is detected, an
entry is created and monitored as long as the session is active.
The Aggregator also detects iSCSI storage devices on all interfaces and autocongures to optimize performance. Performance optimization
operations, such as Jumbo frame size support and disabling storm control on interfaces connected to an iSCSI equallogic (EQL) storage
device, are applied automatically.
Link Aggregation
All uplink ports are congured in a single LAG (LAG 128). Server-facing ports are auto-congured as part of link aggregation groups if the
corresponding server is congured for LACP-based network interface controller (NIC) teaming. Static LAGs are not supported.
NOTE: The recommended LACP timeout is Long-Timeout mode.
Link Tracking
By default, all server-facing ports are tracked by the operational status of the uplink LAG. If the uplink LAG goes down, the aggregator
loses its connectivity and is no longer operational; all server-facing ports are brought down after the specied defer-timer interval, which is
10 seconds by default. If you have congured VLAN, you can reduce the defer time by changing the defer-timer value or remove it by using
the no defer-timer command.
NOTE: If installed servers do not have connectivity to a switch, check the Link Status LED of uplink ports on the aggregator. If all
LEDs are on, to ensure the LACP is correctly congured, check the LACP conguration on the ToR switch that is connected to
the aggregator .
Conguring VLANs
By default, in Standalone mode, all aggregator ports belong to all 4094 VLANs and are members of untagged VLAN 1. To congure only the
required VLANs on a port, use the CLI or CMC interface.
You can congure VLANs only on server ports. The uplink LAG will automatically get the VLANs, based on the server ports VLAN
conguration.
Uplink LAG
The untagged VLAN used for the uplink LAG is always the default VLAN.
Server-Facing LAGs
The tagged VLAN membership of a server-facing LAG is automatically congured based on the server-facing ports that are members of
the LAG.
The untagged VLAN of a server-facing LAG is congured based on the untagged VLAN to which the lowest numbered server-facing port
in the LAG belongs.
NOTE
: Dell Networking recommends conguring the same VLAN membership on all LAG member ports.
Before You Start 37