Introduction to the ECN330-switch
6 1553-KDU 137 365 Uen D 2006-06-16
2.1.1 Switch Architecture
The ECN330-switch employs a wire-speed, non-blocking switching fabric. This
permits simultaneous wire-speed transport of multiple packets at low latency on
all ports. The ECN330-switch also features full-duplex capability on all ports,
which effectively doubles the bandwidth of each connection.
For communications within the same VLAN, the ECN330-switch uses store-and-
forward switching to ensure maximum data integrity. With this type of switching,
the entire packet must be received into a buffer and checked for validity before
being forwarded. This prevents errors from being propagated throughout the
network. For communications between different VLANs, the ECN330-switch
also performs store-and-forward checking on each packet crossing the switch,
routing traffic at wire speed using RIP or OSFP for unicast traffic, and DVMRP
or PIM for multicast traffic.
2.1.2 Management Options
The ECN330-switch contains a comprehensive array of LEDs for “at-a-glance”
monitoring of network and port status. It also includes a management agent that
enables configuration and monitoring of the ECN330-switch using its embedded
management software or through SNMP applications. The ECN330-switch can
be managed by making a direct connection to the RS-232 console port or by
connecting to the switch through a network connection using Telnet or network
management software.
For a detailed description of the ECN330-switch’s management features, see
section 4 on page 21.
2.1.2.1 Management of ECN330 and ECN330-switch
The ECN330 includes a Single Board Computer (SBC) and an ECN330-switch.
The SBC is connected to the Gigabit Ethernet port 28 of the ECN330-switch.
When the SBC is enabled (see “Enabling the SBC to Access Advanced
Management Tools” on page 74), the SBC provides a management proxy
functionality, where management of embedded nodes including the ECN330-
switch is done by the SBC which is managed by PEM. Note that when the SBC
is enabled, the console interface is set to SBC display mode.
When the SBC is disabled, the ECN330 runs in ECN330-switch mode.
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