MN.00356.E - 003 25
• MAB: MW adaptive bandwidth by OAM message support (feature jointly developed with Cisco)
• 2.5Gbps GbE Ports for cable saving installation.
5.8.1 Ingress port rate limiting (Storm control)
Storm control limits the maximum amount of traffic that can be accepted at the input of the switch LAN
ports: it’s possible to apply, for each LAN port, a rate limiter (PIRL set as active for each relevant LAN in-
terface) to a combination of incoming traffic types (independently from the VLAN ID and priority level).
These traffic types are:
• BROADCAST Frames
• MULTICAST
• FLOODED Frames (unknown unicast frames).
5.8.2 Ingress VLAN manipulation
Once the mapping has been performed, all the incoming traffic has been associated to a specific EVC. This
means that the VLAN tag associated to the Carrier Ethernet service is appended to each frame and it is
used across the entire Carrier Ethernet network for delivering the frame towards the destination. This tag
is called S-tag.
S- tag is removed before the frame is delivered across the UNI to the external equipment on the other end
of the connection.
Before appending the VLAN tag associated to the service, the VLAN manipulation function allows modifying
the format of the incoming frames.
The VID can be rewritten on the basis of the following criteria:
• S-tag remapping
• C-tag remapping
5.8.3 Service Instance mapping
Mapping functionality allows associating to all incoming traffic a specific VLAN ID identifying the Ethernet
Virtual Connection (EVC).
The mapping is based on configurable mapping rules:
• ingress user port: all traffic from the port is mapped on the same unique EVC;
• user VLAN ID: all traffic associated to one or more CE VLAN ID is mapped on the same EVC.
Available services:
• service multiplexing
• service multiplexing bundling
• all-to-one bundling.
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