Alcatel-Lucent 7342 - Control and Management; Table 6-14 Modular ONT MAC FPGA and Standards; Table 6-15 GE Multilayer Switch Features

6 — LP MDU, MDU, and modular ONT hardware functional blocks
Alcatel-Lucent 7342 ISAM FTTU ONT R04.05.06 July 2008 6-15
3FE 51892 AAAA TCZZA Edition 01 ONT Product Information Manual
Table 6-14 Modular ONT MAC FPGA and standards
Table 6-15 describes the features of the GE multilayer switch.
Table 6-15 GE multilayer switch features
Control and management
The OBC provides the communication control and processing functions, as well as
management functions to the multilayer switch and the service units.
The OBC provides the functions as described in Table 6-16.
Functions Standards supported
PON The GPON FPGA supports ITU-T G984.2, G984.3, and G984.4, which require a
GPON to support a maximum of 2.5 Gb/s symmetrical line rate.
QoS The GPON FPGA supports mapping the eight priority levels of IEEE 802.1p/q to
equivalent eight priority queues. The mapping of upstream queues and port IDs
are configurable.
Security The GPON FPGA supports advanced encryption standard (AES), a standard
specified by the U.S. National Institute of Standards and Technology.
VLAN The GPON FPGA supports the IEEE 802.1q-based VLAN tag extraction and
insertion function for internal traffic grooming, frame check sequence (FCS)
checking and calculating functions.
Features Descriptions
VLAN cross-connect The cross-connection is between the VLAN and the Ethernet network.
IGMP mirror The IGMP mirror function enables IGMP snooping. The IGMP mirror
function extracts a packet from the data stream that originates from
the service unit and sends the packet to the OBC.
IP multicast (IPMC) The IPMC is used to enable video stream multicasting and replication
towards the respective service interfaces.
Priority-level mapping The eight priority levels of IEEE 802.1p/q are mapped to eight
priority queues for each Ethernet port. Priorities are configurable for
each Ethernet port.
Differentiated service code
point (DSCP) QoS mode
(upstream)
The switch extracts the Ethernet packet, accesses the IP layer, reads
the DSCP value, and inserts a VLAN tag into the Ethernet packet with
the corresponding 802.1p value before forwarding the packet to the
GPON interface.
Line rate switching The line-rate switching is applicable to all packet sizes.
Double VLAN tagging The switch supports two VLAN tagged Ethernet frames with a packet
size of 2000 bytes.
On-chip data packet
memory
The switch supports 1 Mb of on-chip data packet memory.