Models 2121, 2124, 2130,
2135, and 2135C
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Ethernet MicroBridges (X.21,
RS-232, RS-530, & V.35)
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Patton’s MicroBridge
products are the cost-effective solution for expanding your LAN—without
using a router!
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Features & Benefits |
- PPP Bridging Control Protocol (RFC 1638) with
auto detection for compatibility with existing Patton Bridge Products
and standard third-party equipment
- Transparent LAN bridging enables the MicroBridge to pass such higher
layer protocols as IP packets
- Industry standard, shielded RJ-45 10Base-T connection
- 802.3 Ethernet supported by transparent LAN bridging
- 1 Mbyte RAM; 128 kbyte FLASH
- Automatic learning and aging with support for up to 4,096 MAC
addresses
- Nine LEDs monitor power, LAN link, and DTE interface signals
- Variety of WAN interfaces available (X.21, RS-232, RS-530, and V.35)
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Overview |
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The Patton
Ethernet MicroBridge provides a cost-effective solution for connecting
multiple local or remote network segments. The Patton MicroBridges feature
a wide variety of serial interfaces to make your WAN connections easy. All
models are equipped with an 802.3 10Base-T Ethernet RJ-45 jack, which
allows a direct connection to your network equipment.
The Ethernet MicroBridge works on the MAC-layer addresses and operates
independent of higher layer protocols. This functionality allows Patton
Ethernet Microbridge’s to pass higher-layer broadcast, multicast, unicast,
and data frames over the WAN with minimal to no configuration by the
end-user. The MicroBridges are PPP ready supporting standards based
layer-2 protocol interfacing. The MicroBridges are fully compatible with
each other as well as Patton’s full line of bridging products. Using PPP,
the MicroBridges have the flexibility to be used in conjunction with all
other third part PPP compliant equipment.
Whether you are looking to add additional LANs, increase the efficiency of
your WAN connection, or extending your router’s interface, Patton’s
Ethernet MicroBridge is the most simple and cost effective solution
around!
ISP Extension
The Ethernet MicroBridge Series can be used to connect a remote site LAN
to an ISP POP over private or leased lines using CSU/DSUs. The Remote
MicroBridge serial interface connects to any CSU/DSU for data transport
over the WAN. At the ISP POP, another CSU/DSU connects to the serial port
of a router, which in turn provides access to the central LAN. The
MicroBridge communicates with the router using PPP half-bridging. Placing
the Microbridge in the remote site saves the ISP equipment, configuration,
and maintenance costs associated with a router. A MicroBridge cannot
replace a router in the ISP POP because in this application a router is
required due to the multiple LANS that would be attached to the ISP POPs
router.
LAN-to-LAN
Bridging
Ethernet MicroBridges can also be used to connect to the NTU’s serial port
for data transport over the campus or wide area network to access another
LAN. In the application diagram below the Ethernet MicroBridges (Model
2121) establish a proprietary HDLC communications link. Only packets
having addresses outside each LAN are forwarded to the other.
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2121/DM-X/UI
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Ethernet MicroBridge, X.21 DTE with DB-15
Male, Serial Cable, 100-250 VAC |
2121/DM-X/48 |
Ethernet MicroBridge, X.21 DTE with DB-15
Male, Serial Cable, -48VDC |
2124/AM-X/UI |
Ethernet MicroBridge, V.24 DTE with DB-25
Male, Serial Cable, 100-250 VAC |
2124/AM-X/48 |
Ethernet MicroBridge, V.24 DTE with DB-25
Male, Serial Cable, -48VDC |
2130/BM-X/UI |
Ethernet MicroBridge, EIA-530 DTE with
DB-25 Male, Serial Cable, 100-250 VAC |
2130/BM-X/48 |
Ethernet MicroBridge, EIA-530 DTE with
DB-25 Male, Serial Cable, -48VDC |
2135C/CM-X/UI |
Ethernet MicroBridge, V.35 DTE with M/34
Male, Serial Cable, 100-250 VAC |
2135C/CM-X/48 |
Ethernet MicroBridge, V.35 DTE with M/34
Male, Serial Cable, -48VDC |
2135/CM/UI |
Ethernet MicroBridge, V.35 DTE with M/34
Male (No Serial Cable), 100-250 VAC |
2135/CM/48 |
Ethernet MicroBridge, V.35 DTE with M/34
Male (No Serial Cable), -48VDC |
NOTE:
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X= “L” 6-foot (182.88cm) Serial Cable or
“S” 6-inch (15.24cm) Serial Cable. Example: 2121/DM-S/UI Ethernet
MicroBridge, X.21 DTE w/DB-15 Male, 6” (15.24cm) Serial Cable, UI
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DTE Interface: X.21, V.35, RS-232, or RS-530
Network Interface: IEEE 802.3 10Base-T (RJ-45)
Transmission: Synchronous up to 10 Mbps
Protocol: PPP (RFC 1661) with Bridging Control Protocol (RFC 1638)
Memory: 1MB RAM, 128KB FLASH memory
MAC Address Table Size: 4096 entries
MAC Address Aging: MAC addresses deleted after eight minutes
inactivity
LEDs LAN Side: (1) yellow, general status; (1) green, link
integrity
LEDs DTE Side: TXD, RXD and Power, (green); CTRL, IND and CLK,
(yellow)
Power Supply Input: 100-240VAC, 50-60Hz, 0.4A; or optional -48 VDC
Power Consumption: 500mA 5VDC
Temperature: 32 to 122°F (0 to 50°C)
Altitude: 0–15,000 feet (0–4,572 meters)
Humidity: Up to 90% R.H., non-condensing
Dimensions: 3.5 L X 2.1 W X 0.78 H inch (9.0 L X 5.3 W X 2.0 H cm)
Weight: 0.72 lbs (0.32 kg)
Compliance: FCC Part 15A; CE Mark per EEC Directive: 89/336/EEC;
Low Voltage Directive: 73/23/EEC
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