TinyBridge-100 from RAD - Miniature Ethernet / Fast Ethernet bridge
The TinyBridge-100 has been discontinued. Contact us to discuss your
application and other ways to meet your needs.
TinyBridge-100 from RAD is a high performance, remote, self-learning Ethernet/Fast Ethernetbridge. The TinyBridge-100's small size and low cost make it ideal for sensitive bridging applications, or as a LAN extender over synchronousWAN.
TinyBridge-100 LANINTERFACE
TinyBridge-100 is available with a 10/100BaseT interface. The interface operates in full or half duplex Ethernet topologies.
TinyBridge-100 supports a packet length of up to 1536 bytes.
TinyBridge-100 Automatic MDIX allows using straight or crossed cables for the LAN connection. MAC addresses of the LAN to which the RAD TinyBridge-100 is connected are automatically learnt. Only those frames destined for the remote LAN are forwarded. The LAN table stores up to 2048 addresses and is updated automatically. MAC address filtering can be disabled, allowing all traffic to flow over the WAN link
RAD TinyBridge-100 has two queues for handling priority, determined in the following order:
If the packet received is an Ethernet tag frame, TinyBridge-100 marks the packet according to the tag priority (0–7). 0–3: low priority queue 4–7: high priority queue
Otherwise, TinyBridge-100 marks the packet according to IP-ToS priority (0–7). 0–3: low priority queue 4–7: high priority queue
Untagged and non-IP frames enter the low priority queue.
Frames egress from the queues with a 1:2 ratio, two frames with high priority, one frame with low priority.
Flow control for full duplex and backpressure for half duplex are supported. The TinyBridge-100 buffer holds up to 120 frames.
TinyBridge-100 WANINTERFACE
A selection of synchronousWAN interfaces is available:
V.24/RS-232
V.35
V.36/RS-449
X.21
RS-530.
A fault on the WAN can be propagated if fault propagation is enabled; the RAD TinyBridge-100 shuts down the link and forces a router to trace another route.
TinyBridge-100 operates over synchronous links at data rates of up to 10 Mbps. An external clock can be supplied for operation at other bit rates.
Typical TinyBridge-100 applications:
TinyBridge-100 ETHERNET
Frame size (max)
1536 bytes LAN Table
2048 MAC addresses with 5-minute automatic aging
Buffer
Up to 120 frames for 64-byte frames
Latency
With LAN rate 100 Mbps, WAN rate 10 Mbps:
66 µs for 64-byte frames
1400 µs for 1536-byte frames
Compliance
Conforms to IEEE 802.3
Data Rate
10 Mbps, 100 Mbps
Connectors
Shielded RJ-45
Cable
To comply with electromagnetic regulations, it is recommend to use shielded Cat. 5 cable.
TinyBridge-100 WAN
Protocol
HDLC
Data Rate
Up to 10 Mbpssynchronous
Throughput
With WAN rate 10 Mbps:
19700 pps for 64-byte frames and increment byte data (00, 01, 02, …)
802 pps for 1536-byte frames and increment byte data (00, 01, 02, …)
4-wire Range
700m (2300 ft)
Connectors
V.24/RS-232, DB-25 female
V.35, 34-pin female via adapter cable
V.36/RS-422, DB-37 female via adapter cable
RS-530, DB-25 female
X.21, DB-15 female via adapter cable
4-wire: 5-pin terminal block
Operating Range Using Cat. 5 UTP cable:
10 Mbps: 500m (1640 ft)
5 Mbps: 700m (2300 ft)
TinyBridge-100 General information
Physical
Length: 69 mm / 2.7 in Width: 53 mm / 2.1 in Height: 18 mm / 0.7 in Weight: 30 g / 1.0 oz
Power Supply
External 5 VDC/0.6A regulated adapter
Note: While TinyBridge-100 operates with any regulated 5 VDC, 600 mA power supply, the CE approval for the 4-wire versions requires provision of a grounding path through the use of a power supply with a three-prong plug.
Power Consumption
400 mA @ 5 VDC
Environment
Temperature: 0–50°C (32–122°F) Humidity: Up to 90%, non-condensing
