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Features of the Introduction
Intelligent Blade Panel Module
14
Automatic Aging for MAC Addresses
MAC addresses from which no traffic is received for a given period are aged out. This prevents
the Bridging Table from overflowing.
Port Security
Port security prevents unauthorized users from accessing your network. It allows each port to
learn, or be assigned, a list of MAC addresses for devices authorized to access the network
through that port. Any packet received on the port must have a source address that appears in
the authorized list, otherwise it will be dropped. Port security is disabled on all ports by default,
but can be enabled on a per-port basis.
MAC Multicast Support
Multicast service is a limited broadcast service, which allows one-to-many and many-to-many
connections for information distribution. Layer 2 Multicast service is where a single frame is
addressed to a specific Multicast address, from where copies of the frame are transmitted to
the relevant ports.
2.1.2 Layer 2 Features
IGMP Snooping
IGMP Snooping examines IGMP frame contents, when they are forwarded by the IBP
Module from work stations to an upstream Multicast router. From the frame, the IBP Module
identifies work stations configured for Multicast sessions, and which Multicast routers are
sending Multicast frames.
Broadcast Storm Control
Storm Control enables limiting the amount of Multicast and Broadcast frames accepted and
forwarded by the IBP Module. When Layer 2 frames are forwarded, Broadcast and Multicast
frames are flooded to all ports on the relevant VLAN. This occupies bandwidth, and loads all
nodes connected on all ports.
VLAN Transparency Supported Features
The IBP supports VLAN transparency feature. All packets will be forwarded without any
modifications as they are received.
Management VLAN Support
Management VLAN is supported in IBP to provide a dedicated link for management IBP.
Management VLAN is a special VLAN, the uplink port of the management VLAN will only
accept packets with the same VLAN tagged as management VLAN. Other uplink ports which
are not the member of the management VLAN will drop the packets with the management
VLAN id packets.
Link Aggregation
One Aggregated Links may be defined, with up to 8 member ports, to form a single Link
Aggregated Group (LAG). This enables:
• Fault tolerance protection from physical link disruption
• Higher bandwidth connections
• Improved bandwidth granularity
• High bandwidth server connectivity
LAG is composed of ports with the same speed, set to full-duplex operation.