Bay Networks BayStack ARN Routers none Installation And Operating Manual page 124

Installing and Operating BayStack ARN Routers
Table C-2
Table C-2. Network Interfaces Available on ARNs
Network
Interface Description
Ethernet and Supports the Ethernet and IEEE 802.3 standards that provide LAN connectivity. The
Second Ethernet ARN can have up to two Ethernet interfaces -- one on the base module and one on an
expansion module.
The Ethernet interfaces on both the base module and expansion module include a
10Base-T and an 802.3 AUI port; however, you can use only one port (10Base-T or
AUI) on each module at a time.
The 10Base-T interface provides unshielded twisted-pair support; the AUI interface
provides broadband, baseband, fiber, and shielded twisted-pair support, depending on
the transceiver and cabling you use.
Token Ring and Supports the Token Ring and IEEE 802.5 standards that provide LAN connectivity. The
Second Token ARN can have up to two token ring interfaces -- one on the base module and one on an
Ring expansion module.
The token ring base module supports a 9-pin (DB-9) STP token ring interface. The
token ring expansion module supports both a 9-pin (DB-9) STP connector and a UTP
connector; however, you can use only one port (STP or UTP) on the expansion module
at a time.
Both token ring connector types support the 802.5 media access control (MAC)
token-passing protocol, the 802.2 Type 1 (connectionless) protocol, the 802.2 Type 2
(connection-oriented) protocol, and the 16-Mb/s Early Token Release (ETR) protocol
over the appropriate cabling.
Serial Provides WAN connectivity. ARN models can have up to five serial ports (three on an
expansion module and up to two adapter modules).
Each port can operate independently with RS-232, RS-422, RS-449, RS-530, V.28,
V.35, and X.21 cables. Serial capability allows internal or external clocking.
ISDN BRI Supports an S/T or U interface. The BRI provides two B channels, and supports full
D-channel signaling and call setup/tear-down as defined in 1988 CCITT (now ITU-T)
Q.921 and Q.931. For more information on ISDN, functional groups, or reference
points, refer to Configuring Dial Services .
The ISDN BRI option is available as an adapter module for any ARN model.
56/64K DSU/CSU Supports a 56/64K DSU/CSU interface.
V.34 Modem Provides a V.34 modem interface.
C-4
describes each interface.
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