RAD Data comm E1 Interface Converter RIC-E1 - Manual (Page 58)

Appendix D IR-IP Interface Module RIC-E1 Installation and Operation Manual
D-2 Introduction
Erasing Configuration.............................................................................. D-25
Resets Menu........................................................................................... D-25
D.11 V IEW M ENU .................................................................................................. D-26
Configuration and Connection................................................................ D-26
ARP Tables............................................................................................. D-27
Multicast Groups Table Screen ............................................................... D-28
Displaying Statistics ................................................................................ D-28
D.12 D IAGNOSTIC T OOLS (P ING T ERMINAL ) .............................................................. D-29
Using the Ping Function.......................................................................... D-30
D.13 E RASING U SER ’ S C ONFIGURATION .................................................................... D-31
D.14 E RASING IR-IP S OFTWARE ............................................................................... D-31
Erasing Application Software................................................................... D-32
Downloading New Software................................................................... D-32
D.1 Introduction
IR-IP is a high-performance miniature IP router based on RAD's unique IP router
chip, the ChipRouter.
IR-IP works by taking each Ethernet frame from the LAN and determining whether
the IP packet is destined for the IP net on the Ethernet LAN. If not, IR-IP forwards
the packet to the WAN (E1) link. IP packets received from the WAN link are
automatically forwarded to the LAN if the IP net matches.
IR-IP includes hardware filters which handle all filtering operations at wire speed
from both LAN-to-WAN and WAN-to-LAN, without dropping a single packet.
Filtering and forwarding are performed at the maximum rate of 35,000 and
30,000 frames per second (wire speed), respectively. The buffer can hold
256 frames of maximum size of 1534 bytes and a throughput latency of one
frame.
IR-IP is available with 10BaseT (UTP) interface and is fully IEEE 802.3/Ethernet V2
compliant. The IR-IP interface can also operate in full duplex Ethernet
applications.
RIC-E1 equipped with IR-IP can be used as a Frame Relay Access Device (FRAD)
with an integral IP router. RFC 1490 is supported for a single DLCI on the E1 link.
Detection of the DLCI and the maintenance protocol is performed automatically.
This allows the IR-IP to be used as the termination unit of IP services over Frame
Relay at the customer premises, opposite a Frame Relay switch in the backbone.
Alternatively, Point-to-Point Protocol (PPP) can be run on the WAN link with
automatic negotiation on power-up, as well as support for PAP and CHAP
authentication. With this feature, the IR-IP can operate opposite any PPP
compliant access server or backbone router.
IR-IP supports HDLC, which is especially important for broadcast and multicast
applications where bandwidth overhead is critical.
IR-IP supports IP multicast at wire speed, making it suitable for any multicast
environment including high speed downstream environments, such as satellite and
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