Reference Guide

iSCSI Operation

Support for iSCSI trac is turned on by default when the Aggregator powers up. No conguration is required.

When the 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 auto-con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.

CLI conguration is necessary only when the conguration includes iSCSI storage devices that cannot be automatically detected and

when non-default QoS handling is required.

Link Aggregation

In Standalone, and VLT modes, all uplink ports (except port 9 in VLT mode) are congured in a single LAG (LAG 128). There can be

multiple uplink LAGs in programmable-mux mode. Server-facing ports are auto-congured as part of link aggregation groups if the

corresponding server is congured for LACP-based NIC teaming. Static LAGs are supported in PMUX mode.

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.

NOTE: If installed servers do not have connectivity to a ToR switch, check the Link Status LED of uplink ports on the

Aggregator. If all LEDs are ON, check the LACP conguration on the ToR switch that is connected to the Aggregator to

ensure the LACP is correctly congured.

VLANs

By default, all Aggregator ports belong to all 4094 VLANs and are members of untagged VLAN 1. You can use the CLI or CMC

interface to congure only the required VLANs on a port.

When you congure VLANs on server-facing interfaces (ports 1 to 8), you can assign VLANs to a port or a range of ports by

entering the vlan tagged or vlan untagged commands in interface conguration mode; for example:

Dell(conf)# interface tengigabitethernet 0/2 - 4

Dell(conf-if-range-te-0/2-4)# vlan tagged 5,7,10-12

Dell(conf-if-range-te-0/2-4)# vlan untagged 3

NOTE: You can also use the CMC interface to congure VLANs.

Uplink LAG

The tagged VLAN membership of the uplink LAG is automatically congured based on the tagged and untagged VLAN conguration

of all server-facing ports (ports 1 to 8).

The untagged VLAN used for the uplink LAG is always the default VLAN.