Dell PowerEdge M420 Dell PowerConnect M8024-k User's Configuration Guide - Page 896

Table 32-1. IP Routing Features (Continued) Feature ARP table ICMP Router Discovery Protocol (IRDP) Routing table entries Route preferences Description 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 routers. 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. 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. 896 Configuring IP Routing