Specifications
1.3 DEChub 900 MultiSwitch
1–4 Platforms
1.3 DEChub 900 MultiSwitch
The DEChub 900 MultiSwitch chassis is a multitechnology hub that provides
support ranging from simple LAN connectivity to high-speed switching. It offers
high-performance network access, flexible configuration, superior network
management, and security. Figure 1–2 displays the DEChub 900 with modules
installed.
It is a high performance enterprise hub with a technology independent backplane,
This means that Ethernet, Token Ring, FDDI, and ATM can all run on the same
backplane. The hub supports large numbers of bus, ring, and cell-based connections
in many combinations. Support for high throughput allows for the implementation of
emerging higher bandwidth technologies such as ATM.
The DEChub 900 supports up to eight network modules, commonly referred to as
full-height modules. Additionally, the hub also supports half-height modules.
The DEChub 900 integral hub management agent manages DECrepeater 90s without
a DECagent 90. The DEChub 900 MultiSwitch requires an installed module to act as
an IP services module. Refer to Chapter 4 for a complete listing of network modules
that provide IP Services. If there are no IP services modules in a DEChub 900, it
cannot be managed in-band.
You can install up to four power-supply modules in the DEChub 900. That is enough
power to support most configurations with redundancy. This ensures that the hub
continues to operate without interruption even if one of the power modules fails. If a
power module fails, you can hot-swap the module without powering down the hub.