Users Guide

FCoE Connectivity
Many data centers use Fibre Channel (FC) in storage area networks (SANs). Fibre Channel over Ethernet (FCoE) encapsulates Fibre
Channel frames over Ethernet networks.
On an Aggregator, the internal ports support FCoE connectivity and connect to the converged network adapter (CNA) in blade servers.
FCoE allows Fibre Channel to use 10-Gigabit Ethernet networks while preserving the Fibre Channel protocol.
The Aggregator also provides zero-touch conguration for FCoE conguration. The Aggregator auto-congures to match the FCoE
settings used in the ToR switches to which it connects through its uplink ports.
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, Stacking, 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 only in PMUX and Full-Switch modes.
NOTE
: The default LACP timeout is Long-Timeout. The same timeout is recommended to be congured in peer devices.
Uplink Failure Detection
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.
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Before You Start