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Chapter 1:
Introduction
1-6 HSIM-W85 User’s Guide
1.5.3 Inverse Multiplexing (IMUX)
Cabletron Systems Inverse Multiplexing (IMUX) feature provides
enhanced throughput for users by following this process:
•
The IMUX function evenly distributes a data packet stream from the
LAN interface through multiple full T1 WAN interfaces on the
HSIM-W85.
•
Data packet streams received by the WAN interfaces on the other end
of the WAN links are then recombined, ordered, and transmitted to the
LAN interface.
The IMUX function is configured using the Network Tools command,
imux, described in Chapter 4.
1.5.4 Priority Queuing
WAN IP Priority Queuing is used to prioritize IP packets from a specified
IP address. This prioritizing ensures that certain packets get through the
network, such as management packets which are necessary to the
operation of the network. It also ensures that routers that depend on
protocols with tight timing, such as RIP, do not time out. The prioritized
packets do not eliminate other traffic on the network, but are held in a
special queue, so that they are not discarded during oversubscribed traffic
peaks. Priority Queuing can be enabled in management, using Network
Tools. Refer to the wanpq command in the
Management
chapter.
NOTE
Cabletron Systems products that support Inverse Multiplexing
(IMUX), such as the HSIM-W6, CSX400, HSIM-W84,
HSIM-W85, and HSIM-W87, must exist on both ends of the
WAN link for the IMUX function to work. All bridging and
switching functions, such as 802.1D, SecureFast VLAN, and
802.1Q are able to run as normal on the host platform when
using the IMUX function on the HSIM-W85.