Internet Small Computer System Interface (Iscsi) Optimization; Layer 2 Multicast Features; Mac Multicast Support; Igmp Snooping - Dell PowerConnect 8024 User Configuration Manual

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Internet Small Computer System Interface (iSCSI) Optimization

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

Optimization" on page 395.

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

Multicast Features" on page 695.

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.

Switch Features

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