Specifications

3.4 Bridges
3–38 Network Modules
3.4 Bridges
The DECbridge 90 family of bridges are full-performance IEEE 802.1D compliant
Ethernet bridges that connect departmental work groups to larger local area network
(LAN) backbones. These bridges keep local network traffic within the work group
LAN as they forward traffic that has a destination elsewhere on the backbone. This
minimizes work group traffic from impacting overall network performance.
The DECbridge 90 automatically configures itself for operation with any IEEE
802.1D spanning tree compliant bridge. It also automatically learns network
addresses in the work group.
The DECbridge 90 filters 29,694 pps, and forwards 14,847 pps, allowing for quick
access to local and remote traffic. It supports an unlimited number of nodes on the
backbone side, and up to 200 addresses on the work group side.
The DECbridge 90 is also capable of filtering up to 16 protocols in 1 or in both
directions. Work group communications stay local, with forwarding occurring only
when packets need to be sent out on the network. Network transfer rates run at
maximum Ethernet speed (10 Mb/s) enabling the DECbridge 90 to take advantage of
the full Ethernet bandwidth.
The following modules are available:
• DECbridge 90
• DECbridge 90FL