Dell PowerConnect M6220, User Configuration Manual

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Configuring IP Routing
ARP table 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.
ICMP Router Discovery
Protocol (IRDP)
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
routers.
Routing table entries 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
message.
Route preferences 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.
Table 33-1. IP Routing Features (Continued)
Feature Description