Reference Guide

Stacking mode

stack-unit unit iom-mode stack

CONFIGURATION mode

Dell(conf)#stack-unit 0 iom-mode stack

Select this mode to congure Stacking mode CLI commands.

For more information on the Stacking mode, refer to Stacking.

Default Settings

The I/O Aggregator provides zero-touch conguration with the following default conguration settings:

• default user name (root)

• password (calvin)

• VLAN (vlan1) and IP address for in-band management (DHCP)

• IP address for out-of-band (OOB) management (DHCP)

• read-only SNMP community name (public)

• broadcast storm control (enabled in Standalone mode and disabled in VLT mode)

• IGMP multicast ooding (enabled)

• VLAN conguration (in Standalone mode, all ports belong to all VLANs)

You can change any of these default settings using the CLI. Refer to the appropriate chapter for details.

NOTE: You can also change many of the default settings using the chassis management controller (CMC) interface. For

information about how to access the CMC to congure the aggregator, refer to the

Dell Chassis Management Controller

(CMC) User’s Guide

on the Dell Support website at http://support.dell.com/

Other Auto-Congured Settings

After the Aggregator powers on, it auto-congures and is operational with software features enabled, including:

• Ports: Ports are administratively up and auto-congured to operate as hybrid ports to transmit tagged and untagged VLAN

trac.

– Ports from 1 to 8 are internal server-facing ports.

– Ports from 9 to 12 are external ports.

For more information about how ports are numbered, refer to Port Numbering.

• Link aggregation: All uplink ports are congured in a single LAG (LAG 128).

• VLANs: All ports are congured as members of all (4094) VLANs. All VLANs are up and can send or receive layer 2 trac. For

more information, refer to VLAN Membership.

• Data center bridging capability exchange protocol (DCBx): Server-facing ports auto-congure in auto-downstream port roles;

uplink ports auto-congure in auto-upstream port roles.

• Fibre Channel over Ethernet (FCoE) connectivity and FCoE initiation protocol (FIP) snooping: The uplink port channel (LAG 128)

is enabled to operate in Fibre channel forwarder (FCF) port mode.

• Link layer discovery protocol (LLDP): Enabled on all ports to advertise management TLV and system name with neighboring

devices.

• Internet small computer system interface (iSCSI)optimization.

• Internet group management protocol (IGMP) snooping.

• Jumbo frames: Ports are set to a maximum MTU of 12,000 bytes by default.

Before You Start