display ip interface

Use display ip interface to display IP configuration and statistics for the specified Layer 3 interface or all Layer 3 interfaces.

Syntax

display ip interface [ interface-type interface-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

interface-type interface-number: Specifies an interface by its type and number.

Usage guidelines

Use the display ip interface command to display IP configuration and statistics for the specified Layer 3 interface. The statistics include the following information:

The number of unicast packets, bytes, and multicast packets the interface has sent and received.
The number of TTL-invalid packets and ICMP packets the interface has received.

The packet statistics helps you locate a possible attack on the network.

If you do not specify an interface, the command displays information about all Layer 3 interfaces.

Examples

# Display IP configuration and statistics for VLAN-interface 10.

<Sysname> display ip interface vlan-interface 10
Vlan-interface10 current state : DOWN
Line protocol current state : DOWN
Internet Address is 1.1.1.1/8 Primary
Broadcast address : 1.255.255.255
The Maximum Transmit Unit : 1500 bytes
input packets : 0, bytes : 0, multicasts : 0
output packets : 0, bytes : 0, multicasts : 0
TTL invalid packet number:         0
ICMP packet input number:          0
  Echo reply:                      0
  Unreachable:                     0
  Source quench:                   0
  Routing redirect:                0
  Echo request:                    0
  Router advert:                   0
  Router solicit:                  0
  Time exceed:                     0
  IP header bad:                   0
  Timestamp request:               0
  Timestamp reply:                 0
  Information request:             0
  Information reply:               0
  Netmask request:                 0
  Netmask reply:                   0
  Unknown type:                    0

Table 3: Command output

Field	Description
current state	Current physical state of the interface: Administrative DOWN—The interface is shut down with the shutdown command. DOWN—The interface is administratively up but its physical state is down, which might be caused by a connection or link failure. UP—Both the administrative and physical states of the interface are up.
Line protocol current state	Current state of the link layer protocol: DOWN—The protocol state of the interface is down. UP—The protocol state of the interface is up. UP (spoofing)—The protocol state of the interface pretends to be up. However, no corresponding link is present, or the corresponding link is not present permanently but is established as needed.
Internet Address	IP address of an interface followed by: Primary—A primary IP address. Sub—A secondary IP address. DHCP-Allocated—An IP address obtained through DHCP. BOOTP-Allocated—An IP address obtained through BOOTP. Cluster—A cluster IP address. Mad—A MAD IP address. IRF-Member—IP address of the management Ethernet port of an IRF member device.
Broadcast address	Broadcast address of the subnet attached to an interface.
The Maximum Transmit Unit	Maximum transmission units on the interface, in bytes.
input packets, bytes, multicasts output packets, bytes, multicasts	Unicast packets, bytes, and multicast packets received on an interface (statistics start at the device startup).
TTL invalid packet number	Number of TTL-invalid packets received on the interface (statistics start at the device startup).
ICMP packet input number: Echo reply: Unreachable: Source quench: Routing redirect: Echo request: Router advert: Router solicit: Time exceed: IP header bad: Timestamp request: Timestamp reply: Information request: Information reply: Netmask request: Netmask reply: Unknown type:	Total number of ICMP packets received on the interface (statistics start at the device startup): Echo reply packets. Unreachable packets. Source quench packets. Routing redirect packets. Echo request packets. Router advertisement packets. Router solicitation packets. Time exceeded packets. IP header bad packets. Timestamp request packets. Timestamp reply packets. Information request packets. Information reply packets. Netmask request packets. Netmask reply packets. Unknown type packets.

Related commands

display ip interface brief
ip address

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