Allied Telesis AR400 Series Router - Manual (Page 72)

72 AR400 Series Router User Guide
Software Release 2.6.1
C613-02021-00 REV D
Figure 13: Network overview.
Interfaces
The physical interfaces on the base unit or expansion option, sometimes called
ports, connect the router to the physical network. All data enters and leaves the
router via an interface. The interface on the router and the device at the other
end of the link must use the same encapsulations for the Layer 2 protocol.
You can use the asynchronous console port on the base unit, asyn0, to configure
the router (see “Asynchronous Port” on page 74 and the Interfaces chapter in the
AR400 Series Router Software Reference).
Additional asynchronous ports can also connect terminals, printers and
terminal ports on host computers (see the Terminal Server and the Printer Server
chapters in the AR400 Series Router Software Reference).
Switch ports are numbered from 1. By default, all switch ports are enabled and
set to autonegotiate. Autonegotiation allows switch ports to adjust their speed
and duplex mode to accommodate the devices connected to them (see “Switch
Ports” on page 76 and Switching on the AR410 and Switching on the AR450 in the
AR400 Series Router Software Reference).
Switch ports are grouped into logical interfaces called Virtual LANs (VLANs),
numbered from 1. You can create and modify the default VLAN configuration
if necessary (see “Virtual LANs” on page 79 and Switching on the AR410 and
Switching on the AR450 in the AR400 Series Router Software Reference).
ETH
ASYN
PRI
BRI
SYN
PORT
FR
PPP
X.25 LAPB
PPP ACC
Q.931
Q.931 PPP (ACC/L2TP)
VLAN
PPPoE
PPP (ACC/L2TP)
MIOX X.25T
X.25C
ISDN CALL
over BRI channel
ISDN CALL
over PRI channel
Network routing protocols
UGFIG1
Data link protocols Physical interfaces
IP
IPX
AppleTalk
DECnet