Use the display ip interface command to display the information about a Layer 3 interface. If no parameter is specified, the related information of all Layer 3 interfaces will be displayed.

Example

# Display information about interface VLAN interface 1.

<Sysname> display ip interface Vlan-interface 1

Vlan-interface1 current state : UP

Line protocol current state : UP

Internet Address is 192.168.0.36/24 Primary

Broadcast address : 192.168.0.255

The Maximum Transmit Unit : 1500 bytes

input packets : 5028, bytes : 234508, multicasts : 388

output packets : 4544, bytes : 263776, multicasts : 0

ARP packet input number: 19819

Request packet: 19808

Reply packet: 11

Unknown packet: 0

TTL invalid packet number: 0

ICMP packet input number: 165

Echo reply: 0

Unreachable: 165

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

DHCP packet deal mode: global

Table 1-1 Description on the fields of the display ip interface command

Field	Description
current state	Current physical state of an interface
Line protocol current state	Current state of the Line protocol
Internet Address	IP address of an interface. Primary behind an IP address indicates the IP address is a primary one, and Sub indicates the IP address is a secondary one
Broadcast address	Broadcast address of the subnet attached to an interface
The Maximum Transmit Unit	Max transmit unit
input packets : 5028, bytes : 234508, multicasts : 388 output packets : 4544, bytes : 263776, multicasts : 0	Unicast packets, bytes, and multicast packets received on an interface Unicast packets, bytes, and multicast packets sent on an interface
ARP packet input number: 19819 Request packet: 19808 Reply packet: 11 Unknown packet: 0	Total number of ARP packets received on an interface, including l ARP request packets l ARP reply packets l Unknown packets
TTL invalid packet number	Number of received invalid TTL packets
ICMP packet input number: 165 Echo reply: 0 Unreachable: 165 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	Total number of ICMP packets received on an interface, including the following packets: l Echo reply packet 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 exceed 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
DHCP packet deal mode	Mode to process DHCP packets, which can be: l global: The DHCP server with the global address pool is enabled on the interface. l relay: The DHCP relay agent is enabled on the interface.

1.1.2 display ip interface brief

Syntax

display ip interface brief [ interface-type interface-number ]

View

Any view

Parameter

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

Description

Use the display ip interface brief command to display brief information about the basic IP configuration on the specified or all interfaces.

If no interface is specified, the basic IP configuration information of all Layer 3 interfaces will be displayed.

Related command: display ip interface.

Example

# Display brief information about the basic IP configuration for VLAN interface 1.

<Sysname> display ip interface brief Vlan-interface 1

*down: administratively down

(s): spoofing

Interface Physical Protocol IP Address

Vlan-interface1 up up 192.168.0.36

Table 1-2 Description on the fields of the display ip interface brief command

Field	Description
*down	The interface is shut down with the shutdown command.
(s)	Spoofing attribute of the interface. It indicates that an interface whose link layer is displayed up may have no link present or the link is set up only on demand.
Interface	Interface name
Physical	Physical state of interface
Protocol	Link layer state protocol of interface
IP Address	IP address of interface (if no IP address is configured, “unassigned” is displayed.)

1.1.3 ip address

Syntax

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

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

View

Interface view

Parameter

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. The availability of this keyword varies by device.

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.

Use the undo ip address [ ip-address { mask | mask-length } ] command to remove the IP address.

By default, no IP address is assigned to any interface.

The relationship between the primary address and the secondary addresses is as follows:

l When you configure a primary IP address for an interface that already has a primary IP address, the new address will replace the old one.

l The primary and secondary IP addresses can belong to the same network segment.

l Before deleting the primary IP address, you must delete all the corresponding secondary IP addresses first.

Note that:

l If you execute the undo ip address command without any parameter, the switch deletes all IP addresses of the interface.

l The undo ip address ip-address { mask | mask-length } command is used to delete the primary IP address.

l The undo ip address ip-address { mask | mask-length } sub command is used to delete a specified secondary IP address.

l If you configure an interface to obtain an IP address through BOOTP, DHCP, you cannot configure secondary IP addresses for this interface.

Related command: display ip interface.

& Note:

You can configure IP addresses for VLAN interface, Tunnel interface and Loopback interface on S3610&S5510 Series Ethernet Switches.

Example

# Assign VLAN interface 1 a primary IP address and a secondary IP address, 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

Chapter 2 IP Performance Configuration Commands

2.1 IP Performance Configuration Commands

2.1.1 display fib

Syntax

display fib [ | { begin | include | exclude } text | acl acl-number | ip-prefix ip-prefix-name ]

View

Any view

Parameter

| { begin | include | exclude } text: Specifies to display FIB information in the buffer related to a specified string according to a regular expression.

l The begin keyword specifies to display from the first FIB item that contains the specified string text.

l The include keyword specifies to display only the FIB items that include the specified string text.

l The exclude keyword specifies to display only the FIB items that do not include the specified string text.

l The text argument is a string.

acl acl-number: Specifies to display FIB messages filtered through a specific ACL, in the range 2000 to 2999.

ip-prefix ip-prefix-name: Specifies to display FIB information filtered through a specific prefix name, in the range 1 to 19 characters.

Description

Use the display fib command to display FIB forward information. If no parameters are specified, all FIB forward information will display.

Example

# Display all FIB information.

<Sysname> display fib

FIB Table:

Total number of Routes : 2

Flag:

U:Useable G:Gateway H:Host B:Blackhole D:Dynamic S:Static

R:Reject L:Generated by ARP or ESIS

Destination/Mask Nexthop Flag TimeStamp Interface

127.0.0.0/8 127.0.0.1 U t[1141138116] InLoop0

127.0.0.1/32 127.0.0.1 HU t[1141138116] InLoop0

Table 2-1 Description on the fields of the display fib command

Field	Description
Total number of Routes	Total number of routes in the FIB table
Destination/Mask	Destination address/length of mask
Nexthop	Address of next hop
Flag	Signs of routers: l “U”—Router is available l “G”—Gateway is available l “H”—Host router l “B”—Black hole router l “D”—Dynamic router l “S”—Static router l “R”—Refused router, which is not available l “L”—Router created by ARP or ESIS
TimeStamp	Time stamp
Interface	Forward interface

# Display FIB forward information filtered through ACL 2000

<Sysname> system-view

[Sysname] acl number 2000

[Sysname-acl-basic-2000] rule permit source 10.2.0.0 0.0.255.255

[Sysname-acl-basic-2000] display fib acl 2000

Route entry matched by access-list 2000:

Summary counts: 2

Flag:

U:Useable G:Gateway H:Host B:Blackhole D:Dynamic S:Static

R:Reject L:Generated by ARP or ESIS

Destination/Mask Nexthop Flag TimeStamp Interface

127.0.0.0/8 127.0.0.1 U t[1141138116] InLoop0

127.0.0.1/32 127.0.0.1 HU t[1141138116] InLoop0

# Display all lines from the one that contains string “127”

<Sysname> display fib | begin 127

Flag:

U:Useable G:Gateway H:Host B:Blackhole D:Dynamic S:Static

R:Reject L:Generated by ARP or ESIS

Destination/Mask Nexthop Flag TimeStamp Interface

127.0.0.0/8 127.0.0.1 U t[1141138116] InLoop0

127.0.0.1/32 127.0.0.1 HU t[1141138116] InLoop0

# Display FIB forward information filtered through the abc0 prefix list

<Sysname> display fib ip-prefix abc0

Route Entry matched by prefix-list abc0:

Summary count: 2

Flag:

U:Useable G:Gateway H:Host B:Blackhole D:Dynamic S:Static

R:Reject L:Generated by ARP or ESIS

Destination/Mask Nexthop Flag TimeStamp Interface

127.0.0.0/8 127.0.0.1 U t[1141138116] InLoop0

127.0.0.1/32 127.0.0.1 HU t[1141138116] InLoop0

2.1.2 display fib ip-address

Syntax

display fib ip-address1 [ { mask1 | mask-length1 } [ ip-address2 { mask2 | mask-length2 } | longer ] | longer ]

View

Any view

Parameter

ip-address1, ip-address2: Destination IP address, in dotted decimal notation. ip-address1 and ip-address2 together determine an address range for the FIB items to be displayed.

mask1, mask2: IP address mask.

mask-length1, mask-length2: Length of IP address mask, namely, the number of “1” in succession in the masks.

longer: Displays FIB entries that match the specified address/mask and have masks longer than or equal to the mask that a user enters. If no masks are specified, FIB entries that match the natural network address and have the masks longer than or equal to the natural mask will be displayed.

Description

Use the display fib ip-address command to display FIB items that match the specified destination IP address. Each line in the export information stands for a FIB item.

Example

# Display the FIB items whose destination address match 10.1.0.0 in the range of natural masks.

<Sysname> display fib 10.1.0.0 longer

Route Entry Count: 2

Flag:

U:Useable G:Gateway H:Host B:Blackhole D:Dynamic S:Static

R:Reject L:Generated by ARP or ESIS

Destination/Mask Nexthop Flag TimeStamp Interface

10.0.0.0/8 10.1.1.1 U t[1141140133] Vlan1

10.1.1.1/32 127.0.0.1 HU t[1141140133] InLoop0

For explanation about the information above, refer to Table 2-1.

2.1.3 display fib statistics

Syntax

display fib statistics

View

Any view

Parameter

None

Description

Use the display fib statistics command to display statistics about the FIB items.

Example

# Display statistics about the FIB items.

<Sysname> display fib statistics

Route Entry Count : 2

Table 2-2 Description on the fields of the display fib statistics command

Field	Description
Route Entry Count	Number of FIB items

2.1.4 display icmp statistics

Syntax

display icmp statistics

View

Any view

Parameter

None

Description

Use the display icmp statistics command to display statistics of ICMP flows.

Related command: display ip interface and reset ip statistics.

Example

# Display statistics of ICMP flows.

<Sysname> display icmp statistics

Input: bad formats 0 bad checksum 0

echo 5 destination unreachable 0

source quench 0 redirects 0

echo reply 10 parameter problem 0

timestamp 0 information request 0

mask requests 0 mask replies 0

time exceeded 0

Output:echo 10 destination unreachable 0

source quench 0 redirects 0

echo reply 5 parameter problem 0

timestamp 0 information reply 0

mask requests 0 mask replies 0

time exceeded 0

Table 2-3 Description on the fields of the display icmp statistics command

Field	Description
bad formats	Number of import packets of incorrect format.
bad checksum	Number of import packets of incorrect check sum.
echo	Number of import/export packets answering request.
destination unreachable	Number of packets with input/output destination unreachable
source quench	Number of import/export packets with source quenched.
redirects	Number of import/export packets to be redirected
echo reply	Number of import/export packets echoing reply.
parameter problem	Number of import/export packets with incorrect parameter
timestamp	Number of import/export packets for time stamp
information request	Number of import packets for information request
mask requests	Number of import/export packets with mask request
mask replies	Number of import/export packets for mask replies
information reply	Number of export packets for information reply
time exceeded	Number of import/export expiration packets

2.1.5 display ip socket

Syntax

display ip socket [ socktype sock-type ] [ task-id socket-id ]

View

Any view

Parameter

sock-type: Type of socket, in the range of 1 to 3, corresponding to TCP, UDP and raw IP respectively.

task-id: Identification of a task, ranging from 1 to 100

socket-id: Identification of a socket, ranging from 0 to 3072

Description

Use the display ip socket command to display socket information.

Example

# Display all socket information.

<Sysname> display ip socket

SOCK_STREAM:

Task = VTYD(36), socketid = 1, Proto = 6,

LA = 0.0.0.0:23, FA = 0.0.0.0:0,

sndbuf = 8192, rcvbuf = 8192, sb_cc = 0, rb_cc = 0,

socket option = SO_ACCEPTCONN SO_KEEPALIVE SO_REUSEPORT SO_SENDVPNID(3073) SO_SETKEEPALIVE,

socket state = SS_PRIV SS_ASYNC

Task = HTTP(34), socketid = 1, Proto = 6,

LA = 0.0.0.0:80, FA = 0.0.0.0:0,

sndbuf = 8192, rcvbuf = 8192, sb_cc = 0, rb_cc = 0,

socket option = SO_ACCEPTCONN SO_REUSEPORT,

socket state = SS_PRIV SS_NBIO

Task = VTYD(36), socketid = 3, Proto = 6,

LA = 192.168.0.236:23, FA = 192.168.0.10:1306,

sndbuf = 8192, rcvbuf = 8192, sb_cc = 483, rb_cc = 0,

socket option = SO_KEEPALIVE SO_OOBINLINE SO_REUSEPORT SO_SENDVPNID(0) SO_SETKEEPALIVE,

socket state = SS_ISCONNECTED SS_PRIV SS_ASYNC

SOCK_DGRAM:

Task = AGNT(49), socketid = 1, Proto = 17,

LA = 0.0.0.0:161, FA = 0.0.0.0:0,