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17 General IP Routing
This chapter provides information on network functions including:
◆ Ping – Sends ping message to another node on the network.
◆ Trace – 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.
◆ Equal-cost Multipath Routing – Configures the maximum number of equal-cost
paths that can transmit traffic to the same destination
Overview
This switch supports IP routing and routing path management via static routing
definitions and dynamic routing protocols such as RIP, OSPFv2, OSPv3
21
, or
BGPv4
21
. 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 166), assign all ports that belong to the same
group to these VLANs (page 169), and then assign an IP interface to each VLAN
(page 619 or page 624). 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.
21. Refer to the Command Reference Guide for information on configuring these protocols.
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