Specifications

Installation and Operation Manual Chapter 1 Introduction
RICi-4E1/T1, RICi-8E1/T1 Ver. 2.0 Overview 1-3
Bridge
RICi-4E1/T1, RICi-8E1/T1 provides a bridging mechanism between the following
bridge ports:
• Fast Ethernet ports
• MLPPP bundle over E1/T1 ports (Ethernet over E1/T1)
• Internal host.
The internal bridge operates in VLAN-unaware or VLAN-aware modes.
The VLAN-aware bridge mode allows the user to create a subgroup of bridge
ports within the bridge. Each such subgroup is associated with a unique VID.
Frames can be forwarded only between bridge ports that are members of the
same VLAN, thus enabling a total separation between different VLAN users within
the same bridge.
In the VLAN-unaware Bridge mode the bridge ignores VLAN tags and forwards
frames only according to the MAC addresses of their sources and destinations.
Ethernet Type (TPID) is configurable per bridge port, therefore the RICi-4E1/T1,
RICi-8E1/T1 unit can be used in networks utilizing Ethertypes other than the
802.1q Ethertype 0x8100.
RICi-4E1/T1, RICi-8E1/T1 supports QoS mapping from Ethernet ports, Ethernet
VLAN priority (802.1p), or DSCP to egress queue priority at E1/T1 level.
Ethernet OAM
RICi-4E1/T1, RICi-8E1/T1 provides Ethernet end-to-end OAM based on 802.1ag
and Y.1731 to enable Ethernet service providers to monitor their services
proactively, measure end-to-end performance, and guarantee that the customers
receive the contracted SLA. Fault monitoring and performance measurement
include Frame Delay, Frame Delay Variation, Frame Loss, and Frame Availability.
Management
Setup, control, and monitoring of status and diagnostics can be performed using
the following methods:
• Inband or out-of-band management:
 Inband. Local and remote management via an Ethernet or E1/T1 port.
 Out-of-band. Management via a local ASCII terminal connected to the
V.24 (RS-232) DCE control port. In devices with four electrical
10/100BaseT ports, the fourth Ethernet port can be configured as an
out-of-band management port.
 The device can be managed via Telnet, Web browser, or SNMP
(RADview-Lite).
• Web terminal. This tool is a user-friendly Web-based element management
system for remote device configuration and maintenance. It is embedded in
the units and is provided at no extra cost. The Web terminal application can
be run from any standard Web browser.