ECS4110-28P_Management Guide

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18 GENERAL IP ROUTING
This chapter provides information on network functions including:
◆ Ping – Sends ping message to another node on the network.
◆ Trace Rout e – Sends ICMP echo request packets to another node on the
network.
◆ Address Resolution Protocol – Describes how to configure ARP aging
time, proxy ARP, or static addresses. Also shows how to display
dynamic entries in the ARP cache.
◆ Static Routes – Configures static routes to other network segments.
◆ Routing Table – Displays routing entries learned through dynamic
routing and statically configured entries.
OVERVIEW
This switch supports IP routing and routing path management via static
routing definitions. When IP routing is functioning, this switch acts as a
wire-speed router, passing traffic between VLANs with different IP
interfaces, and routing traffic to external IP networks. However, when the
switch is first booted, default routing can only forward traffic between local
IP interfaces. As with all traditional routers, static and dynamic routing
functions must first be configured to work.
INITIAL
CONFIGURATION
By default, all ports belong to the same VLAN and the switch provides only
Layer 2 functionality. To segment the attached network, first create VLANs
for each unique user group or application traffic (page 202), assign all
ports that belong to the same group to these VLANs (page 205), and then
assign an IP interface to each VLAN (page 639 or page 643). By separating
the network into different VLANs, it can be partitioned into subnetworks
that are disconnected at Layer 2. Network traffic within the same subnet is
still switched using Layer 2 switching. And the VLANs can now be
interconnected (as required) with Layer 3 switching.
Each VLAN represents a virtual interface to Layer 3. You just need to
provide the network address for each virtual interface, and the traffic
between different subnetworks will be routed by Layer 3 switching.