Cabletron Systems MicroMMAC 22ES, MicroMMAC-22T, MicroMMAC-24E, MicroMMAC-34E, MicroMMAC-42T Reference Manual
...
M
ICRO
MMAC
LOCAL MANAGEMENT
ROUTING ADDENDUM
Title Page
NOTICE
Cabletron Systems reserves the right to make changes in specifications and other information
contained in this document without prior notice. The reader should in all cases consult Cabletron
Systems to determine whether any such changes have been made.
The hardware, firmware, or software described in this manual is subject to change without notice.
IN NO EVENT SHALL CABLETRON SYSTEMS BE LIABLE FOR ANY INCIDENTAL,
INDIRECT, SPECIAL, OR CONSEQUENTIAL DAMAGES WHATSOEVER (INCLUDING BUT
NOT LIMITED TO LOST PROFITS) ARISING OUT OF OR RELATED TO THIS MANUAL OR
THE INFORMATION CONTAINED IN IT, EVEN IF CABLETRON SYSTEMS HAS BEEN
ADVISED OF, KNOWN, OR SHOULD HAVE KNOWN, THE POSSIBILITY OF SUCH
DAMAGES.
Copyright 1997 by Cabletron Systems, Inc., P.O. Box 5005, Rochester, NH 03866-5005
All Rights Reserved
Printed in the United States of America
Order Number: 9032262 June 1997
Cabletron Systems
All other product names mentioned in this manual may be trademarks or registered trademarks of
their respective companies.
and
MicroMMAC
are registered trademarks of Cabletron Systems, Inc.
MicroMMAC Local Management Routing Addendum i
Printed on Recycled Paper
Notice
ii MicroMMAC Local Management Routing Addendum
CONTENTS
1.0 Introduction..................................................................................... 1
1.1 Local Management Overview......................................................... 1
2.0 M
2.1 WAN Protocols...............................................................................2
2.2 Data Compression.......................................................................... 2
2.3 Bridging and Routing...................................................................... 3
2.4 Protocol Filtering............................................................................. 5
3.0 M
3.1 Local Management Organization.................................................... 7
3.2 Router Setup Screen...................................................................... 8
3.3 IP Router Setup Screen.................................................................. 9
3.4 The IP General Config Screen ..................................................... 10
3.5 IPX Router Setup Screen.............................................................20
3.6 The IPX General Configuration Screen........................................ 22
ICRO
MMAC Protocol Support....................................................... 2
2.3.1 MicroMMAC Bridging and Routing .................................... 4
ICRO
MMAC Local Management................................................... 7
3.2.1 The IP/IPX Screen Fields .................................................. 8
3.3.1 The IP Router Setup Screen Fields................................. 10
3.4.1 IP General Configuration Status Fields ........................... 11
3.4.2 IP General Configuration Fields....................................... 12
3.4.3 Selecting a Port for Configuration.................................... 13
3.4.4 Entering the IP Address and Subnet Mask...................... 13
3.4.5 Selecting the Frame Type for a Port................................ 14
3.4.6 Setting the Maximum Transmission Unit (MTU).............. 14
3.4.7 Enabling IP Routing Services on a Port........................... 15
3.4.8 Enabling IP Forwarding on a Port.................................... 15
3.4.9 Configuring the UDP Broadcast Redirector..................... 16
3.4.10 Enabling Proxy ARP on a Port......................................... 17
3.4.11 Configuring the Network Broadcast Type on a Port ........ 18
3.4.12 Enabling the RIP Routing Protocol on a Port................... 19
3.5.1 The IPX Router Setup Fields........................................... 21
3.6.1 IPX General Configuration Status Fields......................... 22
3.6.2 IPX General Configuration Fields .................................... 23
INDEX
MicroMMAC Local Management Routing Addendum iii
Contents
iv MicroMMAC Local Management Routing Addendum
1.0 INTRODUCTION
1†22†
W elcome to Cabletron Systems
Addendum.
The purpose of this document is to assist the user to configure
MicroMMAC Local Management Routing
the MicroMMac for routing. Use this document as a guide in Local
Management routing.
The MicroMMAC Kit (Part Number MicroE-W6RS-LIC) contains the
memory and firmware to upgrade the operating system of the
MicroMMAC. The MicroMMAC Kit contains the following items:
• 8 MB Local DRAM SIMM
• Memory Installation Sheet
• MicroMMAC Local Management Routing Addendum
• Release Notes for the IP/IPX routing Firmware (v. 2.00.04 or higher)
• Diskettes with Firmware version 2.00.04 or higher
• License Agreement
•
Read Me First
Be sure to read the
contained in the kit as well as this
Routing Addendum.
User’s Guide
notice
Memory Installation Sheet
MicroMMAC Local Management
Also refer to the
MicroMMAC Local Management
shipped with the MicroMMAC.
and the Release Notes
1.1 LOCAL MANAGEMENT OVERVIEW
Cabletron Systems Local Management is a management tool that allows a
network manager to perform the following tasks:
• Configure interconnected devices to form a network.
• Monitor the performance of the network.
• Control user access to the network and its components for the purpose
of security.
2
MicroMMAC Local Management Routing Addendum 1
M
MMAC Protocol Support
ICRO
2.0 M
ICRO
MMAC PROTOCOL SUPPORT
The following sections discuss protocol support on the MicroMMAC
including WAN protocols, data compression, bridging and routing, and
protocol filtering.
2.1 WAN PROTOCOLS
The MicroMMAC, with a BRIM-W6 installed, supports the following
WAN protocols over the WAN port:
• Point-to-Point Compression Control Protocol (CCP) as defined by
RFC 1962
• Point-to-Point Protocol (LCP) as defined by RFC 1661
• Point-to-Point Protocol (BNCP) as defined by RFC 1638
• Point-to-Point Protocol (IPCP) as defined by RFC 1473
• Point-to-Point Protocol (IPXCP) as defined by RFC 1552
• Frame Relay as defined by RFC 1490
• Frame Relay Data Compression Protocol (DCP) as defined by FRF.9
PPP (Point-to-Point Protocol) is a data link layer industry standard WAN
protocol for transferring multi-protocol data traffic over point-to-point
connections. With this protocol, options such as security and network
protocols can be negotiated by the connected devices.
Frame Relay is a packet-switching data communications protocol that
statistically multiplexes many data transmissions over a single
transmission link.
2.2 DATA COMPRESSION
The STAC Electronics Stacker LZS Compression Protocol is supported
over PPP and Frame Relay providing up to 4:1 data compression. Data
compression is supported for each WAN interface for line speeds of up to
256 Kbps. To use data compression, compatible equipment (such as the
MicroMMAC) must be in use at both ends of the WAN link.
2 MicroMMAC Local Management Routing Addendum
2.3 BRIDGING AND ROUTING
Bridging and Routing
Bridging —
Bridging creates separate segments on a network. The
bridge examines a portion of each network frame called the header. This
header contains control information for the frame. The bridge compares
the destination address of the frame to a table of source addresses. If the
address indicates that the sending station and the destination station are
on the same side of the bridge, the frame is discarded. If the addresses do
not indicate that, then the bridge forwards the frame to its other
interface(s).
During this process, the bridge formulates a table that allows it to identify
which stations are connected to which LAN segment. The destination
addresses of received frames are compared to this address table and
decisions are made to discard or forward based on the outcome.
Transparent bridging allows locally connected devices to send frames to
all devices as if they are all on the same LAN.
Bridging allows frames to be sent to all destinations regardless of the
network protocols used. It also allows protocols that cannot be routed
(such as NETBIOS) to be forwarded, and optimizes internetwork capacity
by localizing traffic on LAN segments. A bridge extends the physical
reach of networks beyond the limits of each LAN segment. Filters are
used to increase network security in bridged networks.
Routing —
Routing provides a way to transfer user data from source to
destination over different LAN and WAN links using one or more
network protocol formats. Routing relies on routing address tables to
determine the best path for each packet. Routing tables can be seeded
(i.e., addresses for remote destinations are placed in the table along with
network address masks and a metric for path latency). Routing tables are
also built dynamically (i.e., the location of remote stations, hosts and
networks are updated from broadcast packet information). Routing helps
to increase network capacity by localizing traffic on LAN segments and
reducing the amount of broadcasts that would result from bridged traffic.
It also provides security by isolating traffic on se gmented LANs. Routing
extends the reach of networks beyond the limits of each LAN segment.
MicroMMAC Local Management Routing Addendum 3
M
MMAC Protocol Support
ICRO
2.3.1 MicroMMAC Bridging and Routing
The MicroMMAC can operate as a bridge, a router, or both. The
MicroMMAC operates as a router for network protocols that are
supported when routing is enabled and operates as a bridge when bridging
is enabled. When both bridging and routing are enabled, routing takes
precedence over bridging, i.e., the MicroMMA C uses the protocol address
information of the packet to route the packet to the correct destination.
Howe ver, if the protocol is not supported, the MicroMMAC operates as a
bridge and uses the MAC address information to send the packet.
Operation of the MicroMMAC is influenced by routing and bridging
controls and filters set during MicroMMAC configuration. General IP
routing, and routing or bridging from specific remote routers are controls
set during the configuration process.
IEEE 802.1d Bridging —
The MicroMMAC supports the IEEE 802.1d
standard for LAN to LAN bridging. Bridging is provided over PPP as
well as adjacent LAN ports. The bridging software uses transparent
bridging. When the MicroMMAC is configured as a bridge, the unit
bridges data packets to the destination, regardless of the network
protocols used.
The MicroMMAC uses the Spanning Tree Algorithm to provide bridging
redundancy while preventing data loops and duplicate data. This is a
self-learning bridge, i.e., the bridge builds and updates an address table
with each MAC source address and associated information when the
packets are received.
4 MicroMMAC Local Management Routing Addendum
Protocol Filtering
IP Routing —
IP routing support provides the ability to process
TCP/IP
frames at the network layer for routing. IP routing support includes the
Routing Information Protocol (RIP) that allows the exchange of routing
information on a TCP/IP network. The MicroMMAC receives and
broadcasts RIP messages to adjacent routers and workstations.
IPX Routing —
Internet Packet Exchange (IPX) routing support
provides the ability to process Novell proprietary frames at the network
layer for routing. IPX routing support includes both Routing Information
Protocol (RIP) and Service Advertising Protocol (SAP) that allows the
exchange of routing information on a Novell NetWare network. The SAP
provides routers and servers containing SAP agents with a means of
exchanging internetwork service information.
2.4 PROTOCOL FILTERING
Filtering enables efficient usage of network resources and provides
security for the network and hosts.
IP Internet Firewall
The MicroMMAC supports IP Internet Firewall filtering to prevent
unauthorized access to your system and network resources from the
Internet or a corporate Intranet. Security can be configured to permit or
deny IP traffic. The security is established by configuring IP access filters,
which are based on source IP address, source mask, destination IP
address, destination mask, protocol type, and application port identifiers
for both the Transmission Control Protocol (TCP) and User Datagram
Protocol (UDP). These IP access filters allow individual IP source and
destination pair filtering as well as IP address ranges and wild carding to
match any IP address. These Firewall filters can be defined to allow
inbound only, outbound only, or bi-directional IP communication up to
the UDP and TCP application port level. Firewall access filters can
establish a powerful IP security barrier.
The MicroMMAC supports the IP Access Control (from the ctip-mib)
Internet Firewall Filter.
MicroMMAC Local Management Routing Addendum 5
M
MMAC Protocol Support
ICRO
Bridge Filtering
Bridge filtering enables a network administrator to control the flow of
packets across the MicroMMAC. Bridge filtering can be used to “deny”
or “allow” packets based on a “matched pattern” using a specified
position and hexadecimal content within the packet. This enables
restricting or forwarding of messages based on address, protocol, or data
content. Common uses include preventing access to remote networks,
controlling unauthorized access to the local network, and limiting
unnecessary traffic.
The MicroMMAC supports the following Bridge Filters:
• dot1dStatic Filters (IETF RFC1493)
• Ethernet Special Filtering Database (from the ctbridge-mib)
3
6 MicroMMAC Local Management Routing Addendum
Loading...