Filter
Top Products
BRIM-F6 Overview
BRIM-F6 User’s Guide
Page 1-3
1.3 BRIM-F6 Overview
The BRIM-F6 is an FDDI Bridge Router Interface Module (BRIM)
developed for use in Cabletron’s MMAC-FNB and MicroMMAC. The
BRIM-F6 can be used to provide a high-speed uplink from lower speed
networks such as Ethernet to a 100 Mbps FDDI backbone.
1.4 BRIM-F6 Features
Connectivity
The BRIM-F6 is equipped with slots for FDDI A and B ports. These two
ports allow connection to the ring as a Dual Attached Station (DAS) using
two FPIMs or as a Single Attached Station (SAS) using one FPIM.
As a DAS, the MIM or hub that houses the BRIM-F6 connects directly to
the FDDI main ring. This provides the reliability of an FDDI dual,
counter-rotating ring topology. If one segment of the FDDI ring becomes
disabled, this dual ring configuration provides redundancy and restores
ring continuity.
As a SAS, the BRIM-F6 connects to the primary ring only by using a
single FPIM on the BRIM-F6 to attach to the M port of an FDDI
concentrator.
A dual homing configuration provides an additional redundancy feature
for the MIM or hub containing the BRIM-F6. Dual homing is a way of
connecting to an FDDI ring through the Master (M type) ports of two
separate dual attached concentrators. If one M type port or one segment
fails, the redundant port or segment activates automatically to retain
connection to the ring.
For more information regarding DAS, SAS or dual homing
configurations, refer to Appendix A,
Basic FDDI Networks
.
Bridging
The BRIM-F6 provides translational bridging between any channels or
ports in its host MIM or hub and the FDDI ring.
BRIM-F Book Page 3 Monday, January 29, 1996 9:26 AM