Madge LANswitch 3LS Multilayer Switch High-Performance Layer 3 Switching
Quickly dominating today’s LAN environment, LAN switches provide the throughput and dedicated bandwidth necessary to support users’ ever growing network needs. New applications based on client/server technology, multimedia, and collaborative computing have all benefited from the speed, price and performance afforded by switching.
Fast Layer 3 Switching
But LAN switches do not provide all the answers. In most networks, LAN switches must be used in conjunction with routers, and this has a major impact in a number of areas. Routers are significantly slower than switches. Networks combining two types of equipment are inevitably more expensive to implement. And moves and changes are much more complicated in router-based networks.
The Madge LANswitch 3LS Multilayer switch
- Transforms LANswitch into a fully scalable, integrated system with Layer 2 and Layer 3 capabilities.
- Integrates with the LANswitch backplane, which has interfaces to Ethernet, Fast-Ethernet, FDDI and ATM.
- Costs about 20% of a traditional routing solution, but has the award-winning performance of LANswitch.
- Performs both IP and IPX switching, unlike many other IP only systems.
- Reduces or eliminates the need for expensive routers in the local network.
- Is fully standards-based and interoperates with traditional routers, providing full investment protection.
Multilayer switching is an intelligent combination of switching and routing technologies that provides a complete and integrated solution for all kinds of LAN infrastructures. Unlike systems from other vendors, Madge multilayer switching is standards based, using no proprietary protocols, nor is it an IP-only technology.
Guaranteed Investment Protection
The 3LS interoperates seamlessly with standard routers and Layer 3 elements such as TCP/IP stacks, and IPX servers and clients. It uses standard protocols only: Open Shortest Path First (OSPF) and Router Information Protocol (RIP).
The diagram shows two options for migrating to multilayer switching, with investment protection.
Logical Migration Path
Looking Under the Hood
All time critical tasks such as packet forwarding are executed in fast VLSI hardware, and are separated from tasks such as route determination. Packets shoot across the switching fabric with a very low delay and at a speed that no router can match.
Even if there are many multilayer switches in the network, packets only have to pass through one of them to reach their destination. One hop routing translates directly into better network performance.
Redundancy and Load Sharing
In a network with widely dispersed switches, multiple modules can be used to share the workload and shorten data paths. 3LS modules can be configured to take on primary responsibility for one set of VLANs or subnets, and secondary responsibility for others.
Simplified Moves and Changes
Advanced VirtualMaster™ is a MultiMan™ application that makes it easy for network managers to automatically create and maintain VLANs based on IP and IPX addresses, while the 3LS performs fast switching between VLANs.
Unlike a router, the 3LS is simple to configure. 3LS View™ is a MultiMan add-on application for simple point-and-click configuration of the 3LS module.
Industry-Leading SMON Management
As part of the LANswitch product line, the 3LS is managed by the SMONMaster application which works in conjunction with MultiMan, Madge’s graphical SNMP-based Network Management System.
With SMONMaster you get a complete and accurate picture of backbone, workgroup and desktop traffic, from global views to port-specific perspectives. SMON™ technology allows traffic to be examined per VLAN. It alerts the network manager to problems at the highest level and enables problem isolation and in-depth examination.
MultiMan and SMONMaster are fully integrated with such popular management platforms as HP OpenView for UNIX, HP OpenView for Windows, and IBM NetView for AIX. SMON is in the process of becoming an industry standard.
Customer Support Without Limits
A worldwide network of field service engineers provides a wide range of technical services including on-site technical support and software upgrades. Customers can also download up-to-date technical information from on-line services such as CompuServe or can visit the Madge World Wide Web home page (http://www.madge.com). The LANswitch 3LS comes with a one year warranty and a 30-day installation guarantee, which includes free technical hotline support and on-site assistance as required.
MODULE HARDWAREIntel 80960 33Mhz RISC processor
4 Mbyte DRAM
RS232, RJ45 connector, 9600 bps
PROTOCOLS AND STANDARDS
IPX, IPX RIP/SAP
BOOTP client RFC 1542
Router to Router RIP1, RIP2 RFC 1058, 1722-24
CIDR RFC 1519
SNMP MIB II RFC 1213
IP forwarding MIB
Interface table MIB RFC 1575
RIP2 MIB RFC 1389
OSPF MIB RFC 1850
Intelligent Bridging DECnet, NetBIOS, Apple Talk, LAT
(LANswitch bridges all MAC layer
(64 byte frames)
Latency: 12 microseconds for a 64 byte packet
Hub Slots: 266mm x 40mm x 230mm
Occupies two slots in hub
Consumption 4.5A @ 5V
Humidity: 0-40 degrees Celsius
5% to 95% non-condensing
EN55022 class B; CE
FRONT PANEL INDICATORS
Front Panel LEDs:Transmit, Receive
WAN link (for future use)
MultiMan for UNIX version 4.1 or higher