Assigning Ip Addresses To Network Interfaces - Cisco WS-C3550-12G Software Configuration Manual

Chapter 22 Configuring IP Unicast Routing
Table 22-1 Default Addressing Configuration (continued)
Feature
IRDP
IP proxy ARP
IP routing
IP subnet-zero

Assigning IP Addresses to Network Interfaces

An IP address identifies a location to which IP packets can be sent. Some IP addresses are reserved for
special uses and cannot be used for host, subnet, or network addresses.
addresses and shows which are reserved and which are available for use. RFC 1166, "Internet Numbers,"
contains the official description of IP addresses.
Table 22-2 Reserved and Available IP Addresses
Class
A
B
C
D
E
An interface can have one primary IP address. A mask identifies the bits that denote the network number
in an IP address. When you use the mask to subnet a network, the mask is referred to as a subnet mask.
To receive an assigned network number, contact your Internet service provider.
78-11194-03
Default Setting
Disabled.
Defaults when enabled:
Broadcast IRDP advertisements.
•
Maximum interval between advertisements: 600 seconds.
•
Minimum interval between advertisements: 0.75 times max interval
•
• Preference: 0.
Enabled.
Disabled.
Disabled.
Address or Range
0.0.0.0
1.0.0.0 to 126.0.0.0
127.0.0.0
128.0.0.0 to 191.254.0.0
191.255.0.0
192.0.0.0
192.0.1.0 to 223.255.254
223.255.255.0
224.0.0.0 to 239.255.255.255
240.0.0.0 to 255.255.255.254
255.255.255.255
Status
Reserved
Available
Reserved
Available
Reserved
Reserved
Available
Reserved
Multicast group addresses
Reserved
Broadcast
Catalyst 3550 Multilayer Switch Software Configuration Guide
Configuring IP Addressing
Table 22-2 lists ranges of IP
22-5