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Dell S4048T User Manual

Dell S4048T
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IPv6 Headers
The IPv6 header has a fixed length of 40 bytes. This fixed length provides 16 bytes each for source and
destination information and 8 bytes for general header information.
The IPv6 header includes the following fields:
Version (4 bits)
Traffic Class (8 bits)
Flow Label (20 bits)
Payload Length (16 bits)
Next Header (8 bits)
Hop Limit (8 bits)
Source Address (128 bits)
Destination Address (128 bits)
IPv6 provides for extension headers. Extension headers are used only if necessary. There can be no extension
headers, one extension header or more than one extension header in an IPv6 packet. Extension headers are
defined in the Next Header field of the preceding IPv6 header.
IPv6 Header Fields
The 40 bytes of the IPv6 header are ordered, as shown in the following illustration.
Figure 58. IPv6 Header Fields
Version (4 bits)
The Version field always contains the number 6, referring to the packet’s IP version.
Traffic Class (8 bits)
The Traffic Class field deals with any data that needs special handling. These bits define the packet priority
and are defined by the packet Source. Sending and forwarding routers use this field to identify different IPv6
IPv6 Routing 520

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Dell S4048T Specifications

General IconGeneral
Switching Capacity1.44 Tbps
Rack Units1U
Form FactorRack-mountable
Power DeviceInternal power supply
Power RedundancyOptional
Product TypeSwitch
Jumbo Frame SupportYes
Routing ProtocolOSPF, BGP, RIP, VRRP, PIM-SM, IGMP
Remote Management ProtocolSNMP, RMON, Telnet, SSH
FeaturesQuality 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 StandardsIEEE 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 Temperature0°C to 40 °C
Operating Humidity10% to 90% (non-condensing)

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