Dell PowerEdge M420 Configuration Manual page 896

Dell powerconnect m8024-k user's configuration guide

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Table of Contents

Table 32-1. IP Routing Features (Continued)

ICMP Router Discovery

Protocol (IRDP)

Routing table entries

Route preferences

Configuring IP Routing

The switch maintains an ARP table that maps an

IP address to a MAC address. You can create static

ARP entries in the table and manage various ARP

table settings such as the aging time of

dynamically-learned entries.

Hosts can use IRDP to identify operational routers

on the subnet. Routers periodically advertise their

IP addresses. Hosts listen for these advertisements

and discover the IP addresses of neighboring

You can configure the following route types in the

routing table:

• Default: The default route is the route the switch

will use to send a packet if the routing table does

not contain a longer matching prefix for the

packet's destination.

• Static: A static route is a route that you manually

add to the routing table.

• Static Reject: Packets that match a reject route

are discarded instead of forwarded. The router

may send an ICMP Destination Unreachable

The common routing table collects static, local,

and dynamic (routing protocol) routes. When

there is more than one route to the same

destination prefix, the routing table selects the

route with the best (lowest) route preference.