Dell S4048T User Manual

to a Null string. If the secondary partition also contains a valid image, then the primary boot line value is set to
the partition that is configured to be used to boot the device in a network failure scenario. The secondary and
default boot line values are set to a Null string.
Important Points to Remember
• The Chassis remains in boot prompt if none of the partitions contain valid images.
• To enable TFTP boot after restoring factory default settings, you must stop the boot process in BLI.
In case the system fails to reload the image from the partition, perform the following steps:
1 Power-cycle the chassis (pull the power cord and reinsert it).
2 Hit any key to abort the boot process. You enter uBoot immediately, the => prompt indicates success.
(during bootup)
press any key
3 Assign the new location to the Dell Networking OS image it uses when the system reloads.
uBoot mode
=> setenv primary_boot f10boot
Boot variable (f10boot) can take the following values:
• flash0 — to boot from flash partition A.
• flash1 — to boot from flash partition B.
• tftp://server-ip/image-file-name — to boot from the network.
4 Assign an IP address to the Management Ethernet interface.
uBoot mode
=> setenv ipaddr ip_address
For example, 10.16.150.105.
=> setenv netmask mask
For example, 255.255.0.0.
5 Assign an IP address as the default gateway for the system.
uBoot mode
=> setenv gatewayip gateway_ip_address
For example, 10.16.150.254.
6 Save the modified environmental variables.
uBoot mode
Management 97

Dell S4048T Specifications

General

Switching Capacity	1.44 Tbps
Rack Units	1U
Form Factor	Rack-mountable
Power Device	Internal power supply
Power Redundancy	Optional
Product Type	Switch
Jumbo Frame Support	Yes
Routing Protocol	OSPF, BGP, RIP, VRRP, PIM-SM, IGMP
Remote Management Protocol	SNMP, RMON, Telnet, SSH
Features	Quality of Service (QoS), Jumbo Frames Support, Virtual Route Redundancy Protocol (VRRP), VLAN support, sFlow, Multiple Spanning Tree Protocol (MSTP), Rapid Spanning Tree Protocol (RSTP), IPv6 support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3ae
Dimensions (W x D x H)	17.3 in x 16 in x 1.7 in
Operating Temperature	0°C to 40 °C
Operating Humidity	10% to 90% (non-condensing)