RAD Data comm 100 Manuel D’Utilisation

 

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High performance miniature remote 

bridge for Fast Ethernet extension 

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Wire-speed WAN throughput: 

19,700 pps at 10 Mbps 

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10/100BaseT interface 

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Synchronous WAN interfaces: V.24, 

V.35, V.36, RS-530, X.21, or 4-wire 

modem 

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Two priority queues according to 

802.1p or IP ToS bits 

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Fault propagation of WAN error 

conditions to LAN port  

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Automatic MDIX support 

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Compatible with applicable parts of 

IEEE 802.3 

 

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TinyBridge-100 is a high performance, 

remote, self-learning Ethernet/Fast Ethernet 

bridge. Its small size and low cost make it 

ideal for sensitive bridging applications, or 

as a LAN extender over synchronous WAN. 

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TinyBridge-100 is available with a 

10/100BaseT interface. The interface 

operates in full or half duplex Ethernet 

topologies. 

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TinyBridge-100 supports a packet length of 

up to 1536 bytes. 

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Automatic MDIX allows using straight or 

crossed cables for the LAN connection. 

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MAC addresses of the LAN to which the 

unit 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. 

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MAC address filtering can be disabled, 

allowing all traffic to flow over the WAN link 

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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. 

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Flow control for full duplex and 

backpressure for half duplex are supported. 

The buffer holds up to 120 frames. 

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A selection of synchronous WAN interfaces 

is available: 

 

V.24/RS-232 

 

V.35 

 

V.36/RS-449 

 

X.21 

 

RS-530. 

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A fault on the WAN can be propagated if 

fault propagation is enabled; the 

TinyBridge-100 shuts down the link and 

forces a router to trace another route. 

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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.