DELL N3000 Manual Do Utilizador

Switch Feature Overview

The iSCSI Optimization feature helps network administrators track iSCSI 

traffic between iSCSI initiator and target systems. This is accomplished by 

monitoring, or snooping traffic to detect packets used by iSCSI stations in 

establishing iSCSI sessions and connections. Data from these exchanges may 

optionally be used to create classification rules to assign the traffic between 

the stations to a configured traffic class. This affects how the packets in the 

flow are queued and scheduled for egress on the destination port.
For information about configuring iSCSI settings, see "Configuring iSCSI 

For information about configuring L2 multicast features, see "Configuring L2 

Multicast service is a limited broadcast service that allows one-to-many and 

many-to-many connections. In Layer 2 multicast services, a single frame 

addressed to a specific multicast address is received, and copies of the frame 

to be transmitted on each relevant port are created.

Internet Group Management Protocol (IGMP) Snooping is a feature that 

allows a switch to forward multicast traffic intelligently on the switch. 

Multicast traffic is traffic that is destined to a host group. Host groups are 

identified by the destination MAC address, i.e. the range 01:00:5e:00:00:00 to 

01:00:5e:7f:ff:ff:ff for IPv4 multicast traffic or 33:33:xx:xx:xx:xx for IPv6 

multicast traffic. Based on the IGMP query and report messages, the switch 

forwards traffic only to the ports that request the multicast traffic. This 

prevents the switch from broadcasting the traffic to all ports and possibly 

affecting network performance.