This command displays all pertinent information about the IP interface. The argument unit/slot/port corresponds to a physical routing interface or VLAN routing interface. The keyword vlan is used to specify the VLAN ID of the routing VLAN directly instead of in a unit/slot/port format.
| Format | show ip interface {unit/slot/port | vlan 1-4093 | loopback 0-7} |
| Mode |
|
| Term | Definition |
|---|---|
| Routing Interface Status | Determine the operational status of IPv4 routing Interface. The possible values are Up or Down. |
| Primary IP Address | The primary IP address and subnet masks for the interface. This value appears only if you configure it. |
| Method | Shows whether the IP address was configured manually or acquired from a DHCP server. |
| Secondary IP Address | One or more secondary IP addresses and subnet masks for the interface. This value appears only if you configure it. |
| Helper IP Address | The helper IP addresses configured by the ip helper-address (Interface Config) command. |
| Routing Mode | The administrative mode of router interface participation. The possible values are enable or disable. This value is configurable. |
| Administrative Mode | The administrative mode of the specified interface. The possible values of this field are enable or disable. This value is configurable. |
| Forward Net Directed Broadcasts | Displays whether forwarding of network-directed broadcasts is enabled or disabled. This value is configurable. |
| Proxy ARP | Displays whether Proxy ARP is enabled or disabled on the system. |
| Local Proxy ARP | Displays whether Local Proxy ARP is enabled or disabled on the interface. |
| Active State | Displays whether the interface is active or inactive. An interface is considered active if its link is up and it is in forwarding state. |
| Link Speed Data Rate | An integer representing the physical link data rate of the specified interface. This is measured in Megabits per second (Mbps). |
| MAC Address | The burned in physical address of the specified interface. The format is 6 two-digit hexadecimal numbers that are separated by colons. |
| Encapsulation Type | The encapsulation type for the specified interface. The types are: Ethernet or SNAP. |
| IP MTU | The maximum transmission unit (MTU) size of a frame, in bytes. |
| Bandwidth | Shows the bandwidth of the interface. |
| Destination Unreachables | Displays whether ICMP Destination Unreachables may be sent (enabled or disabled). |
| ICMP Redirects | Displays whether ICMP Redirects may be sent (enabled or disabled). |
| DHCP Client Identifier | The client identifier is displayed in the output of the command only if DHCP is enabled with the client-id option on the in-band interface. See ip address dhcp. |
| Interface Suppress Status | Identifies whether the interface is suppressed. |
| Interface Name | The user-configured name of the interface. |
| Unicast Reverse Path Forwarding Mode | The uRPF mode on the interface. See ip verify unicast source reachable-via. |
| Unicast Reverse Path Forwarding Allow-Default | Identifies whether the uRPF allow-default parameter has been set. See ip verify unicast source reachable-via. |
Example: The following shows example CLI display output for the command..
(switch)#show ip interface 1/0/2 Routing Interface Status....................... Down Primary IP Address............................. 1.2.3.4/255.255.255.0 Method......................................... Manual Secondary IP Address(es)....................... 21.2.3.4/255.255.255.0 ............................................... 22.2.3.4/255.255.255.0 Helper IP Address.............................. 1.2.3.4 ............................................... 1.2.3.5 Routing Mode................................... Disable Administrative Mode............................ Enable Forward Net Directed Broadcasts................ Disable Proxy ARP...................................... Enable Local Proxy ARP................................ Disable Active State................................... Inactive Link Speed Data Rate........................... Inactive MAC Address.................................... 00:10:18:82:0C:68 Encapsulation Type............................. Ethernet IP MTU......................................... 1500 Bandwidth...................................... 100000 kbps Destination Unreachables....................... Enabled ICMP Redirects................................. Enabled Interface Suppress Status...................... Unsuppressed Unicast Reverse Path Forwarding Mode........... Disabled Unicast Reverse Path Forwarding Allow-Default.. False
Example: In the following example the DHCP client is enabled on a VLAN routing interface.
(Routing) #show ip interface vlan 10 Routing Interface Status................. Up Method................................... DHCP Routing Mode............................. Enable Administrative Mode...................... Enable Forward Net Directed Broadcasts.......... Disable Active State............................. Inactive Link Speed Data Rate..................... 10 Half MAC address.............................. 00:10:18:82:16:0E Encapsulation Type....................... Ethernet IP MTU................................... 1500 Bandwidth................................ 10000 kbps Destination Unreachables................. Enabled ICMP Redirects........................... Enabled Interface Suppress Status................ Unsuppressed DHCP Client Identifier................... 0-0010.1882.160E-vl10
