Field	Description
current state	Current physical state of an interface
Line protocol current state	Current state of the link layer 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	Maximum transmission units on an interface
input packets : 0, bytes : 0, multicasts : 0 output packets : 0, bytes : 0, 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: 665839 Request packet: 665744 Reply packet: 95 Unknown packet: 0	Total number of ARP packets received on an interface, including ARP request packets, ARP reply packets, and unknown packets
TTL invalid packet number	Number of TTL-invalid packets received on an interface
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	Total number of ICMP packets received on an interface, including the following packets: Echo reply packet, unreachable packets, source quench packets, routing redirect packets, echo request packets, router advertisement packets, router solicitation packets, time exceed packets, IP header bad packets, timestamp request packets, timestamp reply packets, information request packets, information reply packets, netmask request packets, netmask reply packets, and unknown type packets

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 a specified or all Layer 3 interfaces.

Related command: display ip interface.

Example

# Display brief information about interface Vlan-interface1.

<Sysname> display ip interface brief Vlan-interface 1

*down: administratively down

(s): spoofing

Interface Physical Protocol IP Address

Vlan-interface1 up up 192.168.0.52

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

Field	Description
*down	The interface is administratively shut down with the shutdown command.
(s)	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 interface
Protocol	Link layer protocol state of interface
IP Address	IP address of interface

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.

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 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 can assign a secondary IP address only when the interface is not configured to dynamically obtain IP address through BOOTP or DHCP.

Related command: display ip interface.

& Note:

With S5500-SI series Ethernet switches, you can configure IP addresses for VLAN interfaces and Loopback interfaces. Only 32-bit subnet masks can be configured on Loopback interfaces.

Example

# Assign Vlan-interface1 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: Displays FIB information in the buffer related to the specified string according to a regular expression.

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

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

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

l The text argument is a string.

acl acl-number: Displays FIB information filtered through a specific ACL numbered from 2000 to 2999.

ip-prefix ip-prefix-name: Displays FIB information filtered through a specific prefix name (a string of 1 to 19 characters).

Description

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

Example

# Display all the 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 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”—Blackhole 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 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 starting from the line that contains the 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 information filtered through the prefix abc0

<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 entries 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: Specifies to display FIB entries that match with the specified address/mask. If no masks are specified, FIB entries that match the destination address of the natural network segment will be displayed.

Description

Use the display fib ip-address command to display FIB information that matches the specified destination IP address. Each line in the displayed information stands for a FIB entry.

Example

# Display the FIB entries 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 entries.

Example

# Display statistics about the FIB entries.

<Sysname> display fib statistics

Route Entry Count : 2

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

Field	Description
Route Entry Count	Number of FIB entries

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, reset ip statistics.

Example

# Display ICMP statistics.

<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 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 packets out of time

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 a 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 = FTPS(69), socketid = 1, Proto = 6,

LA = 0.0.0.0:21, FA = 0.0.0.0:0,

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

socket option = SO_ACCEPTCONN SO_REUSEADDR SO_KEEPALIVE SO_SETKEEPALIVE,

socket state = SS_PRIV

Task = VTYD(44), 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(42), 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(44), socketid = 5, Proto = 6,

LA = 192.168.0.52:23, FA = 192.168.0.10:1115,

sndbuf = 8192, rcvbuf = 8192, sb_cc = 714, 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 = DHCP(45), socketid = 1, Proto = 17,

LA = 0.0.0.0:67, FA = 0.0.0.0:0,