01-IP Addressing Commands
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Syntax
display ip interface [ interface-type interface-number ]
View
Any view
Default Level
1: Monitor level
Parameters
interface-type interface-number: Specifies an interface by its type and number.
Description
Use the display ip interface command to display information about a specified or all Layer 3 interfaces.
Examples
# Display information about interface VLAN-interface 1.
<Sysname> display ip interface vlan-interface 1
Vlan-interface1 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
ARP packet input number: 0
Request packet: 0
Reply packet: 0
Unknown packet: 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 1-1 display ip interface command output description
|
Field |
Description |
|
current state |
Current physical state of the interface, which can be l Administrative DOWN: Indicates that the interface is administratively down; that is, the interface is shut down with the shutdown command. l DOWN: Indicates that the interface is administratively up but its physical state is down, which may be caused by a connection or link failure. l UP: Indicates that both the administrative and physical states of the interface are up. |
|
Line protocol current state |
Current state of the link layer protocol, which can be l DOWN: Indicates that the protocol state of the interface is down, which is usually because that no IP address is assigned to the interface. l UP: Indicates that the protocol state of the interface is up. |
|
Internet Address |
IP address of an interface followed by: l Primary: Identifies a primary IP address, or l Sub: Identifies a secondary IP address. |
|
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 (the statistics start at the device startup) |
|
ARP packet input number: Request packet: Reply packet: Unknown packet: |
Total number of ARP packets received on the interface (the statistics start at the device startup), including l ARP request packets l ARP reply packets l Unknown packets |
|
TTL invalid packet number |
Number of TTL-invalid packets received on the interface (the 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 (the statistics start at the device startup), including the following packets: l Echo reply packets l Unreachable packets l Source quench packets l Routing redirect packets l Echo request packets l Router advertisement packets l Router solicitation packets l Time exceeded packets l IP header bad packets l Timestamp request packets l Timestamp reply packets l Information request packets l Information reply packets l Netmask request packets l Netmask reply packets l Unknown type packets |
Syntax
display ip interface brief [ interface-type [ interface-number ] ]
View
Any view
Default Level
1: Monitor level
Parameters
interface-type: Interface type.
interface-number: Interface number.
Description
Use the display ip interface brief command to display brief information about a specified or all Layer 3 interfaces.
Without the interface type and interface number specified, the information about all Layer 3 interfaces is displayed; with only the interface type specified, the information about all Layer 3 interfaces of the specified type is displayed; with both the interface type and interface number specified, only the information about the specified interface is displayed.
Related commands: display ip interface.
Examples
# Display brief information about VLAN interfaces.
<Sysname> display ip interface brief vlan-interface
*down: administratively down
(s): spoofing
Interface Physical Protocol IP Address Description
Vlan-interface1 up up 6.6.6.6 Vlan-inte...
Vlan-interface2 up up 7.7.7.7 VLAN2
Table 1-2 display ip interface brief command output description
|
Field |
Description |
|
*down: administratively down |
The interface is administratively shut down with the shutdown command. |
|
(s) : spoofing |
Spoofing attribute of the interface. It indicates that an interface whose network layer protocol is displayed up may have no link present or the link is set up only on demand. |
|
Interface |
Interface name |
|
Physical |
Physical state of the interface, which can be l *down: Indicates that the interface is administratively down; that is, the interface is shut down with the shutdown command. l down: Indicates that the interface is administratively up but its physical state is down, which may be caused by a connection or link failure. l up: Indicates that both the administrative and physical states of the interface are up. |
|
Protocol |
Link layer protocol state of the interface, which can be l down: Indicates that the protocol state of the interface is down, which is usually because that no IP address is assigned to the interface. l up: Indicates that the protocol state of the interface is up. |
|
IP Address |
IP address of the interface (If no IP address is configured, “unassigned” is displayed.) |
|
Description |
Interface description information, for which at most 12 characters can be displayed. If there are more that 12 characters, only the first nine characters are displayed. |
Syntax
ip address ip-address { mask | mask-length } [ sub ]
undo ip address [ ip-address { mask | mask-length } [ sub ] ]
View
Interface view
Default Level
2: System level
Parameters
ip-address: IP address of interface, in dotted decimal notation.
mask: Subnet mask in dotted decimal notation.
mask-length: Subnet mask length, the number of consecutive ones in the mask.
sub: Secondary IP address for the interface.
Description
Use the ip address command to assign an IP address and mask to the interface.
Use the undo ip address command to remove all IP addresses from the interface.
Use the undo ip address ip-address { mask | mask-length } command to remove the primary IP address.
Use the undo ip address ip-address { mask | mask-length } sub command to remove a secondary IP address.
By default, no IP address is assigned to any interface.
When assigning IP addresses to an interface, consider the following:
l You can assign only one primary IP address to an interface.
l The primary and secondary IP addresses can be located in the same network segment.
l Before removing the primary IP address, remove all secondary IP addresses.
l You cannot assign a secondary IP address to the interface that is configured to obtain one through BOOTP, or DHCP.
Related commands: display ip interface.
Examples
# Assign VLAN-interface 1 a primary IP address 129.12.0.1 and a secondary IP address 202.38.160.1, with subnet masks being 255.255.255.0.
<Sysname> system-view
[Sysname] interface vlan-interface 1
[Sysname-Vlan-interface1] ip address 129.12.0.1 255.255.255.0
[Sysname-Vlan-interface1] ip address 202.38.160.1 255.255.255.0 sub
