IP addressing configuration commands 1

display ip interface· 1

display ip interface brief 3

ip address 5

 

display ip interface

Syntax

display ip interface [ interface-type interface-number ] [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

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

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use display ip interface to display IP configuration information for a specified Layer 3 interface or all Layer 3 interfaces.

Examples

# Display IP configuration information for 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

ip fast-forwarding incoming packets state is Disable

ip fast-forwarding outgoing packets state is Disable

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 Command output

Field	Description
current state	Current physical state of the interface: ·     Administrative DOWN—Indicates that the interface is administratively down. That is, the interface is shut down with the shutdown command. ·     DOWN—Indicates that the interface is administratively up but its physical state is down, which may be caused by a connection or link failure. ·     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: ·     DOWN—Indicates that the protocol state of the interface is down. ·     UP—Indicates that the protocol state of the interface is up. ·     UP (spoofing)—Indicates that 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—Identifies a primary IP address. ·     Sub—Identifies a secondary IP address. ·     negotiated—Identifies a PPP negotiated IP address. ·     unnumbered—Identifies an unnumbered IP address. ·     acquired via DHCP—Identifies an IP address obtained through DHCP. ·     acquired via BOOTP—Identifies an IP address obtained through BOOTP. ·     Cluster—Identifies a cluster IP address. ·     Mad—Identifies a MAD 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
ip fast-forwarding incoming packets state	Enabled/disabled state of fast-forwarding incoming packets on the interface
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 ·     ARP request packets ·     ARP reply packets ·     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: ·     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

 

display ip interface brief

Syntax

display ip interface [ interface-type [ interface-number ] ] brief [ | { begin | exclude | include } regular-expression ]

View

Any view

Default level

1: Monitor level

Parameters

interface-type: Interface type.

interface-number: Interface number.

|: Filters command output by specifying a regular expression. For more information about regular expressions, see Fundamentals Configuration Guide.

begin: Displays the first line that matches the specified regular expression and all lines that follow.

exclude: Displays all lines that do not match the specified regular expression.

include: Displays all lines that match the specified regular expression.

regular-expression: Specifies a regular expression, a case-sensitive string of 1 to 256 characters.

Description

Use display ip interface brief to display brief IP configuration information for a specified Layer 3 interface or all Layer 3 interfaces.

Note that:

·     Without the interface type and interface number specified, the brief IP configuration information for all Layer 3 interfaces is displayed.

·     With only the interface type specified, the brief IP configuration information for all Layer 3 interfaces of the specified type is displayed.

·     With both the interface type and interface number specified, only the brief IP configuration information for the specified interface is displayed.

Related commands: display ip interface.

Examples

# Display brief IP configuration information for VLAN interfaces.

<Sysname> display ip interface vlan-interface brief

*down: administratively down

(s): spoofing

Interface                     Physical Protocol IP Address      Description

Vlan1                         up       up       6.6.6.6         Vlan-inte...

Vlan2                         up       up       7.7.7.7         Vlan-inte...

Table 2 Command output

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 link 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: ·     *down—Indicates that the interface is administratively down. That is, the interface is shut down with the shutdown command. ·     down—Indicates that the interface is administratively up but its physical state is down. ·     up—Indicates that both the administrative and physical states of the interface are up.
Protocol	Link layer protocol state of the interface: ·     down—Indicates that the protocol state of the interface is down. ·     up—Indicates that the protocol state of the interface is up. ·     up(s)—Indicates that the protocol state of the interface is up (spoofing).
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.

 

ip address

Syntax

ip address ip-address { mask-length | mask } [ sub ]

undo ip address [ ip-address { mask-length | mask } [ sub ] ]

View

Interface view

Default level

2: System level

Parameters

ip-address: IP address of interface, in dotted decimal notation.

mask-length: Subnet mask length, the number of consecutive ones in the mask.

mask: Subnet mask in dotted decimal notation.

sub: Secondary IP address for the interface.

Description

Use ip address to assign an IP address and mask to the interface.

Use undo ip address to remove all IP addresses from the interface.

Use undo ip address ip-address { mask | mask-length } to remove the primary IP address.

Use undo ip address ip-address { mask | mask-length } sub 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:

·     You can assign only one primary IP address to an interface.

·     The primary and secondary IP addresses can be located in the same network segment.

·     Before removing the primary IP address, remove all secondary IP addresses.

·     You cannot assign a secondary IP address to the interface that is configured to borrow an IP address through IP unnumbered or obtain one through BOOTP, DHCP, or PPP negotiation.

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