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4
B
ASIC
C
ONFIGURATION OF
P
ORTS
,
P
ATHS
,
AND
C
ONNECTORS
This chapter contains conceptual information about ports, paths, and
connectors and contains basic configuation procedures for each of the
interfaces on your PathBuilder switch.
The models S590, S598 and S599 PathBuilder switches have Ultra-WAN
connectors, which need to be configured (in addition to port and path
configuration) before they are shown in the port and path configuration
displays.
Paths, Ports, and
Connectors
Ports and paths are the fundamental interface syntax on the switch. This
section defines ports, paths, and connectors and explains how they are
numbered.
The fundamental difference between paths and ports is that the path is
the
physical interface and the port is the logical interface in the software
that is mapped to the physical path.
■
A connector is the physical interface itself.
■
A path is a connection on the physical interface that connects a switch
to a physical network medium such as Ethernet, a T1/E1 line, or a
serial line. Each path is associated with a connector.
■
A port is the logical interface used by the protocol software to
represent a connection to a network.
■
All connectors, by default, carry one path each. This default can be
changed on Ultra-WAN connectors such that an Ultra-WAN connector
carries multiple paths, as is required in ISDN PRI operation.
By default, each path is assigned to one port. For example, all network
traffic received on physical path 1 is treated by the software as arriving on
logical port 1, and all traffic that the software transmits through logical
port 1 passes through physical path 1.