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Chapter 1:
Introduction
1-6 HSIM-W87 User’s Guide
• The IMUX function is configurable using the Network Tools
command, imux, described in Chapter 4.
1.4.4 Priority Queuing
WAN IP Priority Queuing is used to prioritize IP packets from a specified
IP address. This prioritization ensures that certain packets get through the
network, such as management packets which are necessary to the
operation of the network, and 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.
1.4.5 DS1 Alarm
Using the DS1 Error Threshold Alarm Monitor provides a means of
setting error thresholds and notifying the user of potential DS1 problems
with SNMP trap events.
The ds1alarm Monitor feature can be enabled in management, using
Network Tools. Refer to the ds1alarm command in the
Management
chapter.
1.4.6 SNMP and MIB Support
With the SNMP support, the MIBs supported by the HSIM-W87 include:
•
RFC 1406 – Definitions of Managed Objects for the DS1 and E1
Interface Types
•
RFC 1407 – Definitions of Managed Objects for the DS3/E3 Interface
Type
NOTE
Cabletron Systems products that support Inverse Multiplexing
(IMUX), such as the HSIM-W87, HSIM-W6, CSX400,
HSIM-W84, and HSIM-W85, 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-W87.