Dell X1000 Networking X-Series Switches User Guide - Page 23

Quality of Service Features

Page 23 highlights

FILE LOCATION: C:\Users\gina\Desktop\Checkout_new\Dell Astute\User Guide\Dell_Astute_Features.fm For more information, see VLAN LAG Membership. Link Aggregation and LACP LACP uses peer exchanges across links to determine, on an ongoing basis, the aggregation capability of various links, and continuously provides the maximum level of aggregation capability achievable between a given pair of devices. LACP automatically determines, configures, binds, and monitors the port binding within the system. For more information, see VLAN LAG Membership. DHCP Clients DHCP enables additional setup parameters to be received from a network server upon system startup. DHCP service is an on-going process. For more information, see IP Addressing Overview. Quality of Service Features Class of Service 802.1p Support The IEEE 802.1p signaling technique is an OSI Layer 2 standard for marking and prioritizing network traffic at the data link/MAC sub-layer. 802.1p traffic is classified and sent to the destination. No bandwidth reservations or limits are established or enforced. 802.1p is taken from the 802.1Q (VLANs) standard. 802.1p establishes eight levels of priority, similar to the IP Precedence IP Header bit-field. For more information about QoS, see Network Administration: Quality of Service. TCP Congestion Avoidance The TCP Congestion Avoidance feature activates an algorithm to prevent TCP global synchronization during congestions. TCP global synchronization can occur when packets are dropped all at once during congestion. As a result, it can unexpectedly synchronize multiple TCP hosts to reduce their transmission during congestion and restart the transmission when the congestion eases. For more information, see TCP Congestion Avoidance. DELL CONFIDENTIAL - PRELIMINARY 8/9/16 - FOR PROOF ONLY Features 23

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Features
23
FILE LOCATION:
C:\Users\gina\Desktop\Checkout_new\Dell Astute\User
Guide\Dell_Astute_Features.fm
DELL CONFIDENTIAL – PRELIMINARY 8/9/16 - FOR PROOF ONLY
For more information, see
VLAN LAG Membership
.
Link Aggregation and LACP
LACP uses peer exchanges across links to determine, on an ongoing basis, the
aggregation capability of various links, and continuously provides the
maximum level of aggregation capability achievable between a given pair of
devices. LACP automatically determines, configures, binds, and monitors the
port binding within the system.
For more information, see
VLAN LAG Membership
.
DHCP Clients
DHCP enables additional setup parameters to be received from a network
server upon system startup. DHCP service is an on-going process.
For more information, see
IP Addressing Overview
.
Quality of Service Features
Class of Service 802.1p Support
The IEEE 802.1p signaling technique is an OSI Layer 2 standard for marking
and prioritizing network traffic at the data link/MAC sub-layer. 802.1p traffic
is classified and sent to the destination. No bandwidth reservations or limits
are established or enforced. 802.1p is taken from the 802.1Q (VLANs)
standard. 802.1p establishes eight levels of priority, similar to the IP
Precedence IP Header bit-field.
For more information about QoS, see
Network Administration: Quality of
Service
.
TCP Congestion Avoidance
The TCP Congestion Avoidance feature activates an algorithm to prevent
TCP global synchronization during congestions.
TCP global synchronization
can occur when packets are dropped all at once during congestion. As a result,
it can unexpectedly synchronize multiple TCP hosts to reduce their
transmission during congestion and restart the transmission when the
congestion eases.
For more information, see
TCP Congestion Avoidance
.