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IP Routing Features
Overview of IP Routing
The software can learn an entry when the switch or routing switch receives
an ARP request from another IP forwarding device or an ARP reply. Here is
an example of a dynamic entry:
IP Address MAC Address Type Port
1 207.95.6.102 0800.5afc.ea21 Dynamic 6
Each entry contains the destination device’s IP address and MAC address.
To configure other ARP parameters, see “Configuring ARP Parameters” on
page 16-10.
IP Route Table
The IP route table contains routing paths to IP destinations.
Not e The default gateway, which you specify when you configure the basic IP
information on the switch, is used only when routing is not enabled on the
switch.
The IP route table can receive the routing paths from the following sources:
A directly-connected destination, which means there are no router hops
to the destination
A static IP route, which is a user-configured route
A route learned through RIP
A route learned through OSPF
The IP route table contains the best path to a destination.
When the software receives paths from more than one of the sources listed
above, the software compares the administrative distance of each path
and selects the path with the lowest administrative distance. The admin-
istrative distance is a protocol-independent value from 1 – 255.
The IP route table is displayed by entering the CLI command show ip route
from any context level in the console CLI. Here is an example of an entry in
the IP route table:
Destination Network Mask Gateway Type Sub-Type Metric
1.1.0.0 255.255.0.0 99.1.1.2 connected 1
16-4