
129
5
RAD Data Communications 2011 Catalog
IP routing functionalities
In addition to its Ethernet bridging attributes,
the ASMi-54LRT incorporates a built-in router to
allow secure and efficient Layer 3 IP connectivity
over packet switched networks. The device
enables port forwarding whereby packets are
delivered according to a static NAT/PAT (network
address translation/port address translation)
table. This allows multiple LAN devices to share
a single public IP address, so that outgoing
traffic appears to originate from a single device
– the ASMi-54LRT.
Solid Firewall™ protection for the LAN and WAN
interfaces, as well as for the DMZ sub-network,
provides security against unauthorized network
access, including malicious denial of service
(DoS) attacks. Protective measures include rate
limiting for ingress packets of vulnerable types,
stateful packet inspection (SPI) and service
authorization, among others.
The ASMi-54LRT supports QoS differentiation for
IP applications with four priority queues, Strict
Priority scheduling and user-configurable
classification according to DSCP values.
Pico-DSLAM functionality
The ASMi-54 supports multipoint connectivity
for E1 and Ethernet services when working
opposite four modems or ASMi-54L devices. As
a pico-DSLAM, it aggregates Ethernet traffic
from remote ASMi-54L units over a fiber or
copper Fast Ethernet connection to the PSN.
SDH/SONET
PSN
E1s/STM-1/
STM-4
ETH/GbE
LRS-102/
Megaplex-4100
4xETH
ASMi-54/
ASMi-54L
E1
PBX
Copper
ASMi-54LRT
Copper
Up to
96 units
Deploying Ethernet and E1 services over SHDSL.bis
ASMi-54, rail-mount enclosure
SDH
PSN
4xE1
ETH
ASMi-54/8W
2W
2W
E1
ETH
PBX
ASMi-54L
2W
2W
E1
ETH
PBX
ASMi-54L
E1
ETH
PBX
ASMi-54L
E1
ETH
PBX
ASMi-54L
Multipoint topology for E1 and Ethernet over rural areas
SHDSL.bis pico-DSLAM – cost-effective solution for Ethernet connectivity
DSL MODEMS
PSN
ETH
2W
ASMi-54/8W
ETH
ASMi-54L
2W
ETH
ASMi-54L
2W
2W
ETH
ASMi-54L
ETH
ASMi-54L
Comentarios a estos manuales