Choosing a Mode of Operation
Choosing a Mode of Operation
You can configure your PeerMaster adapter to operate in either of
two modes: the Traditional Adapter mode or the VNET Switch
mode. Use the Traditional Adapter mode when you expect little or
no cross-subnetwork traffic. (Subnetwork is also called subnet.) Use
the VNET Switch mode when you need to build subnets to provide
cross-segment traffic. Choose the mode of operation and
configuration that fits the needs of your network. Both modes of
operation are described in this section; examples of configurations
begin on page “Examples of Configurations” on page 134.
Traditional Adapter Mode
When the PeerMaster adapter is functioning in this mode, the
drivers for your adapter register each individual LAN segment with
the network operating system (NOS) as a unique subnet. Thus,
your NOS views your adapter as four separate adapters. Therefore,
you must configure each network segment with a unique network
number.
All cross-subnet traffic must be routed. Routing can be performed
internally by the server itself, or externally by a local router.
Internal routing is the least expensive alternative, but impairs server
responsiveness by involving the server in frame forwarding.
External routers provide high-performance frame forwarding
without impacting the server. However, they are cumbersome,
expensive, and difficult to configure and manage.
Following are guidelines for using the Traditional Adapter mode:
Do not externally join (using bridges, switches, or concentrators)
ports of adapters.
You can configure as many nodes as you need; the adapter
places no limit on the number of nodes per port.
Ensure that each port is bound to the protocol with a unique
network number.
132
PC Server 520 User's Handbook for PCI/Micro Channel
Summary of Contents for PC Server 520
Page 1: ...PC Server 520 User s Handbook for PCI Micro Channel IBM...
Page 86: ...Installation Checklist 70 PC Server 520 User s Handbook for PCI Micro Channel...
Page 146: ...Using the Mini Configuration Program 130 PC Server 520 User s Handbook for PCI Micro Channel...
Page 190: ...Using the SCSISelect Utility Program 174 PC Server 520 User s Handbook for PCI Micro Channel...
Page 385: ...Installing Additional Test Programs 207 CMD 3 Chapter 7 Solving Problems 369...
Page 438: ...IBM Part Number 78H6336 Printed in U S A May 1996 78H6336...