Dell S4048T User Manual

To delete an uplink-state group, use the no uplink-state-group group-id command.
2 Assign a port or port-channel to the uplink-state group as an upstream or downstream interface.
UPLINK-STATE-GROUP mode
{upstream | downstream} interface
For interface, enter one of the following interface types:
• 10 Gigabit Ethernet: enter tengigabitethernet {slot/port[/subport] | slot/port-
range}
• For a 40-Gigabit Ethernet interface, enter the keyword fortyGigE then the slot/port information.
Where port-range and port-channel-range specify a range of ports separated by a dash (-) and/or
individual ports/port channels in any order; for example:
upstream tengigabitethernet 1/1-1/2,1/5,1/9,1/11-1/12
downstream port-channel 1-3,5
• A comma is required to separate each port and port-range entry.
To delete an interface from the group, use the no {upstream | downstream} interface
command.
3 Configure the number of downstream links in the uplink-state group that will be disabled (Oper Down
state) if one upstream link in the group goes down.
UPLINK-STATE-GROUP mode
downstream disable links {number | all}
• number: specifies the number of downstream links to be brought down. The range is from 1 to
1024.
• all: brings down all downstream links in the group.
The default is no downstream links are disabled when an upstream link goes down.
NOTE: Downstream interfaces in an uplink-state group are put into a Link-Down state with an UFD-
Disabled error message only when all upstream interfaces in the group go down.
To revert to the default setting, use the no downstream disable links command.
4 (Optional) Enable auto-recovery so that UFD-disabled downstream ports in the uplink-state group
come up when a disabled upstream port in the group comes back up.
UPLINK-STATE-GROUP mode
downstream auto-recover
The default is auto-recovery of UFD-disabled downstream ports is enabled.
To disable auto-recovery, use the no downstream auto-recover command.
5 (Optional) Enter a text description of the uplink-state group.
UPLINK-STATE-GROUP mode
description text
The maximum length is 80 alphanumeric characters.
Uplink Failure Detection (UFD) 1092

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)