Page 10 - 2015 Master Catalog
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mode: a single switch, cross-switch, or cross-Ring design and planning.

Bandwidth Management

Rate control is used to meter and limit the data stream input or output rate to a port. The forwarding of
broadcast traffic consumes the resources of a managed Ethernet switch, which can negatively impact the
forwarding of other traffic. The rate control mechanism is used to protect regular traffic from broadcast or
multicast traffic.

Command Line Interface (CLI)

The command line interface (CLI) is a network management application operated through an ASCII terminal
that does not use a graphical user interface (GUI). Greater configuration flexibility can be achieved by directly
entering commands into the terminal.

Dual Homing

Two rings may be connected together with redundant paths using α-Ring's dual homing feature. The back-up
path between networks will activate within milliseconds once the primary connection between networks fails.
Therefore, no matter what kind of network redundancy mechanism is incorporated, within each ring, whether
it is RSTP or some other mechanism, network redundancy can be achieved between the two networks using

Internet Group Management Protocol (IGMP) Snooping

The purpose of IP multicast filtering is to optimize a switched network's performance, so that multicast packets
will only be forwarded to those ports containing multicast group host members and routers instead of flooding
to all of the ports in the subnet (VLAN).

Jumbo Frame

Jumbo Frames are large IP frames used in high-performance networks to increase performance over long
distances. The term Jumbo Frame most often refers to Gigabit Ethernet frames that are higher than 9000
bytes, but they can refer to anything over the IP MTU (Maximum Transmission Unit) of 1500 bytes on an
Ethernet frame.

Multiple Spanning Tree Protocol (MSTP, IEEE 802.1s)

MSTP was originally defined in IEEE 802.1s and was later merged into IEEE 802.1Q-2005. MSTP defines an
extension to RSTP in order to further develop the usefulness of virtual LANs (VLANs). This per-VLAN Multiple
Spanning Tree Protocol configures a separate spanning tree for each VLAN group and blocks all but one of the
possible alternate paths within each spanning tree.

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