Introduction
1-2
Hardware Bridging Logic
Hardware frame filter/forward logic increases the bridging performance of the
9A128-01 and 9A129-01, allowing the modules to achieve higher throughputs (up
to 20,000 packets per second).
Spanning Tree Algorithm
The 9A128-01 and 9A129-01 support both IEEE 802.1d and DEC Spanning Tree
Algorithm (STA) protocols.
Connectivity
For ATM, the 9A128-01 uses a 155 Mbps SONET OC3 Multimode Fiber front
panel interface and the 9A129-01 uses a single mode fiber interface. These have a
SC type connector. In addition, the 9A128-01 and 9A129-01 have two physical
FDDI interfaces (FNB-1, and FNB-2) and allows bridging one of these to the front
panel interface.
LANVIEW LEDs
The 9A128-01 and 9A129-01 use LANVIEW: the Cabletron Systems built-in visual
diagnostic and status monitoring system. With LANVIEW LEDs, you can quickly
identify the device, port, and physical layer status at a glance.
Hot Swapping
The 9A128-01 and 9A129-01 can be installed or removed from the chassis while
the MMAC-Plus is powered up without affecting the operation of the rest of the
network.
