Cabletron Systems CSX400 - Manual (Page 18)

Device Configuration
2-4 CSX WPIMs
WAN Redundancy
For a redundant wide-area connection, one of the WAN interfaces on your
CSX400 can be conÞgured as a primary link, with the other interface designated
as the backup. If the primary link should fail for some reason, the other WAN
interface will take over as the wide area link until the primary is restored.
When a WPIM-S/T is installed as the backup interface, that connection will
activate and provide an ISDN connection to the wide area network, if the primary
WAN link fails. The ISDN WPIM can also provide backup for single or multiple
Data Link Connection Interfaces (DLCIs). If a leased line loses a DLCI or a remote
ofÞce, for example, the WPIM-S/T will restore a 64K connection for that site while
the rest of the connections remain on the leased line. For more information on
WAN redundancy and the WPIM-S/T, consult your QuickSET documentation or
your hardware documentation.
CSX WPIMs
The following Cabletron WPIMs provide WAN connectivity for the CSX400,
HSIM-W84
, and the CSX200 series. Note that currently only the WPIM-SY and
WPIM-T1 can be managed on a CSX with SPMA. For all other WPIMs,
conÞguration can be done with the QuickSET application that was shipped with
your device. Consult your QuickSET documentation for more details.
Chapter 4, CSX WAN ConÞguration, describes how to conÞgure the T1 and
synchronous WPIMs, including Frame Relay and PPP protocol conÞguration. If
there is a speciÞc device from the CSX200 series that supports the WPIM, it is
noted below. Otherwise, the WPIM can be special-ordered and installed in a
general CSX200 (contact the Cabletron Systems Global Call Center for more
information).
WPIM-DDS DDS is Digital Data Services, a digital network that
supports data rates of 56Kbps or 64Kbps. The DDS
NOTE
If you are using SPMA in a stand-alone mode or in conjunction with the SunNet
Manager or Solstice Enterprise Manager platforms, the RMON option will be available
for your CSX400, whether or not you have purchased the RMON application module. If
you are using SPMA in conjunction with HP Network Node Manager or IBM NetView
AIX, however, the RMON option will only appear when the module has been purchased
and installed.
NOTE
The WPIM-S/T is designed for WAN ISDN redundancy only and is not intended to be
used for a primary WAN connection at this time.