Explanation of show ip interface output

Explanation of show ip interface output

Output	Explanation
Internet address is 10.200.212.1/24	Gives the IP address and subnet mask that are currently set for the interface. For this interface, the network mask is /24, which is equivalent to 255.255.255.0.
Broadcast address is 255.255.255.255	Gives the broadcast address for this interface. The default is 255.255.255.255; it can be modified with the ip broadcast-address command.
Address determined by non-volatile memory	Specifies the source from which the IP address for the interface was retrieved.
MTU is 1500 bytes	Specifies the Maximum Transmission Unit for this interface. This can be modified with the ip mtu command.
Helper address is not set	The ip helper-address command sets a destination address for UDP broadcasts. In this example, it is not set. It is normally used to forward BOOTP or other UDP services to a server.
Directed broadcast forwarding is disabled	Specifies whether directed broadcasts are enabled. Directed broadcasts are normally disabled, but can be enabled using the ip directed broadcasts command. See the description of directed broadcasts earlier in this chapter.
Multicast reserved groups joined: 224.0.0.10	Lists the multicast group joined by this interface.
Outgoing access list is not set	Shows the outgoing access list for the interface. The ip access-group number out command sets the access list.
Inbound access list is 145	Shows the incoming access list for the interface. The ip access-group number in command sets the access list.
Proxy ARP is enabled	Gives the status of proxy ARP; either enabled or disabled. See the ip proxy-arp description earlier in this chapter.
Security level is default	Gives the IPSO security level for this interface.
ICMP redirects are always sent	Shows the status of ICMP redirects; either allowed or not. The ip redirects command enables them.
ICMP unreachables are always sent	Specifies whether ICMP unreachable messages are sent from this interface. The ip unreachables command enables it.
ICMP mask replies are never sent	Specifies whether ICMP mask replies are sent. The ip mask-reply command enables it.
IP fast switching is disabled	Specifies whether the fast-switching cache for outgoing packets is enabled. Use ip route-cache to enable it.
IP fast switching on the same interface is disabled	Specifies whether the fast-switching cache for packets on the same interface is enabled. Use ip route-cache to enable it.
IP multicast fast switching is disabled	Specifies whether the fast-switching cache for outgoing multicast packets is enabled. Use ip mroute-cache same-interface to enable it.
Router Discovery is disabled	Specifies whether router discovery is enabled. Use the ip irdp command to enable it.
IP output packet accounting is disabled	Specifies whether IP output packet accounting is enabled. If enabled, this line will also describe the accounting threshold. Use the ip accounting command to enable it.
IP access violation accounting is disabled	Specifies whether access violation accounting is enabled. Use the ip accounting access-violations command to enable it.
TCP/IP header compression is disabled	Specifies whether TCP header compression is enabled. Use the ip tcp header-compression command to enable it.
Probe proxy name replies are disabled	Specifies whether the HP probe proxy is enabled. Use the ip probe proxy command to enable it.
Gateway Discovery is disabled	Specifies whether gateway discovery is enabled. Use the ip gdp command to enable it.
Policy routing is disabled	Specifies whether policy routing is enabled. The ip policy command enables it.
Network address translation is disabled	Specifies whether NAT is enabled on this interface. The ip nat command enables address translation. However, it requires some extensive configuration. For more information.