H3C S3100 Series Ethernet Switches command Manual-Release 21XX Series(V1.06)

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06-IP Address-IP Performance Commands
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IP Address Configuration Commands

display ip interface

Syntax

display ip interface [ interface-type interface-number ]

View

Any view

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.

If no argument is specified, information about all Layer 3 interfaces is displayed.

Examples

# Display information about VLAN-interface 1.

<Sysname> display ip interface Vlan-interface 1

Vlan-interface1 current state :UP

Line protocol current state :UP

Internet Address is 192.168.0.39/24 Primary

Broadcast address : 192.168.0.255

The Maximum Transmit Unit : 1500 bytes

IP packets input number: 9678, bytes: 475001, multicasts: 7

IP packets output number: 8622, bytes: 391084, 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 1-1 Description on the fields of the display ip interface command

Field

Description

Vlan-interface1 current state

Current physical state of VLAN-interface 1

Line protocol current state

Current state of the link layer protocol

Internet Address

l      IP address of the interface

Broadcast address

Directed broadcast address of the subnet attached to the interface

The Maximum Transmit Unit

Maximum transmission unit on the interface

IP packets input number: 9678, bytes: 475001, multicasts: 7

IP packets output number: 8622, bytes: 391084, multicasts: 0

Total number of packets, bytes, and multicast packets forwarded and received on the interface

TTL invalid packet number

Number of received invalid TTL packets

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 received ICMP packets, including:

Echo reply packet, unreachable packet, source quench packet, routing redirect packet, Echo request packet, router advert packet, router solicit packet, time exceed packet, IP header bad packet, timestamp request packet, timestamp  reply packet, information request packet, information reply packet, netmask request packet, netmask reply packet, and unknown types of packets.

 

display ip interface brief

Syntax

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

View

Any view

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.

With no argument included, the command displays information about all layer 3 interfaces; with only the interface type specified, it displays information about all layer 3 interfaces of the specified type; with both the interface type and interface number specified, it displays information about the specified interface.

Related commands: display ip interface.

Examples

# Display brief information about VLAN-interface 1.

<Sysname> display ip interface brief vlan-interface 1

*down: administratively down

(l): loopback

(s): spoofing

 Interface               IP Address     Physical Protocol     Description

 Vlan-interface1         192.168.0.39    up       up           Vlan-inte...

Table 1-2 Description on the 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 the interface whose link layer protocol is displayed up may have no such a link present or the link is set up only on demand.

Interface

Interface name

IP Address

IP address of the interface (If no IP address is configured, “unassigned” is displayed.)

Physical

Physical state of the interface

Protocol

Link layer protocol state of the interface

Description

Interface description information.

If the description has no more than 12 characters, the whole description can be displayed. If it has more than 12 characters, only the first nine characters are displayed.

 

ip address

Syntax

ip address ip-address { mask | mask-length }

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

View

VLAN interface view, loopback interface view

Parameters

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

mask: Subnet mask, in dotted decimal notation.

mask-length: Subnet mask length, the number of consecutive ones in the mask. It is in the range of 0 to 32.

Description

Use the ip address command to specify an IP address and mask for a VLAN or loopback interface.

Use the undo ip address command to remove an IP address and mask of a VLAN or loopback interface.

By default, no IP address is configured for VLAN or loopback interface.

 

l          A newly specified IP address overwrites the previous one if there is any.

l          The IP address of a VLAN interface must not be in the same network segment as that of a loopback interface on a device.

 

Related commands: display ip interface.

Examples

# Assign the IP address 129.12.0.1 to VLAN interface 1 with subnet mask 255.255.255.0.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] interface Vlan-interface 1

[Sysname-Vlan-interface1] ip address 129.12.0.1 255.255.255.0

 


IP Performance Configuration Commands

display fib

Syntax

display fib

View

Any view

Parameters

None

Description

Use the display fib command to display all forwarding information base (FIB) information.

Examples

# Display all FIB information.

<Sysname> display fib

Flag:

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

  R:Reject   E:Equal cost multi-path   L:Generated by ARP or ESIS     Destination/Mask   Nexthop         Flag TimeStamp     Interface

10.153.17.0/24     10.153.17.99    U    t[37]          Vlan-interface1

10.153.18.88/32    127.0.0.1       GHU  t[37]          InLoopBack0

10.153.18.0/24     10.153.18.88    U    t[37]          LoopBack0

10.153.17.99/32    127.0.0.1       GHU  t[37]          InLoopBack0

127.0.0.0/8        127.0.0.1       U    t[33]          InLoopBack0

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

Field

Description

Flag

Flags:

U: A route is up and available.

G: Gateway route

H: Local host route

B: Blackhole route

D: Dynamic route

S: Static route

R: Rejected route

E: Multi-path equal-cost route

L: Route generated by ARP or ESIS

Destination/Mask

Destination address/mask length

Nexthop

Next hop address

TimeStamp

Timestamp

Interface

Forwarding interface

 

display fib ip-address

Syntax

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

View

Any view

Parameters

ip-address1, ip-address2: Destination IP addresses, in dotted decimal notation. ip-address1 and ip-address2 together define an address range. The FIB entries in this address range will be displayed.

mask1, mask2: Subnet masks, in dotted decimal notation.

mask-length1, mask-length2: Length of the subnet masks, the number of consecutive ones in the masks, in the range of 0 to 32.

longer: Displays the FIB entries matching the specified address/mask and having masks longer than or equal to the specified mask. 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 view the FIB entries matching the specified destination IP address.

If no mask or mask length is specified, the FIB entry that matches the destination IP address and has the longest mask will be displayed; if the mask is specified, the FIB entry that exactly matches the specified destination IP address and mask will be displayed.

Examples

# Display FIB entry information which matches destination 12.158.10.0 and has a mask length no less than eight.

<Sysname> display fib 12.158.10.0 longer

  Route Entry Count: 1

Flag:

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

  R:Reject   E:Equal cost multi-path   L:Generated by ARP or ESIS

Destination/Mask   Nexthop         Flag TimeStamp     Interface

12.158.10.0/24     12.158.10.1     U    t[85391]      Vlan-interface10

# Display FIB entry information which has a destination in the range of 12.158.10.0/24 to 12.158.10.6/24 and has a mask length of 24.

<Sysname> display fib 12.158.10.0 255.255.255.0 12.158.10.6 255.255.255.0

  Route Entry Count: 1

Flag:

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

  R:Reject   E:Equal cost multi-path   L:Generated by ARP or ESIS

Destination/Mask   Nexthop         Flag TimeStamp     Interface

12.158.10.0/24     12.158.10.1     U    t[85391]      Vlan-interface10

For details about the displayed information, see Table 2-1.

display fib acl

Syntax

display fib acl acl-number

View

Any view

Parameters

acl-number: Basic ACL number, in the range of 2000 to 2999.

Description

Use the display fib acl command to display the FIB entries matching a specific ACL. For ACL, refer to the part discussing ACL in this manual.

Examples

# Configure and display ACL 2001.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] acl number 2001

[Sysname-acl-basic-2001] rule permit source 211.71.75.0 0.0.0.255

[Sysname-acl-basic-2001] display acl 2001

Basic ACL  2001, 1 rule

Acl's step is 1

 rule 0 permit source 211.71.75.0 0.0.0.255

# Display the FIB entries filtered by ACL 2001.

<Sysname> display fib acl 2001

Route Entry matched by access-list 2001

  Summary Counts :1

Flag:

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

  R:Reject   E:Equal cost multi-path   L:Generated by ARP or ESIS

Destination/Mask   Nexthop         Flag TimeStamp     Interface

211.71.75.0/24     1.1.1.2         GSU  t[250763]     Vlan-interface2

For details about the displayed information, see Table 2-1.

display fib |

Syntax

display fib | { begin | exclude | include } regular-expression

View

Any view

Parameters

|: Uses a regular expression to match FIB entries. For detailed information about regular expression, refer to Configuration File Management Command.

begin: Displays a specific FIB entry and all the FIB entries following it. The specific FIB entry is the first entry that matches the specified regular expression.

exclude: Displays the FIB entries that do not match the specified regular expression.

include: Displays the FIB entries that match the specified regular expression.

regular-expression: A case-sensitive character string.

Description

Use the display fib | command to display the FIB entries filtered by the specified regular expression.

Examples

# Display the entries starting from the first one containing the string 169.254.0.0.

<Sysname> display fib | begin 169.254.0.0

169.254.0.0/16    2.1.1.1     U       t[0]            Vlan-interface1

2.0.0.0/16        2.1.1.1     U       t[0]            Vlan-interface1

For details about the displayed information, see Table 2-1.

display fib statistics

Syntax

display fib statistics

View

Any view

Parameters

None

Description

Use the display fib statistics command to display the total number of FIB entries.

Examples

# Display the total number of FIB entries.

<Sysname> display fib statistics

Route Entry Count : 8

display icmp statistics

Syntax

display icmp statistics

View

Any view

Parameters

None

Description

Use the display icmp statistics command to display the statistics about ICMP packets.

Related commands: display ip interface, reset ip statistics.

Examples

# Display the statistics about ICMP packets.

<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 2-2 Description on the fields of the display icmp statistics command

Field

Description

Input:

bad formats

Number of received wrong format packets

bad checksum

Number of received wrong checksum packets

echo

Number of received echo packets

destination unreachable

Number of received destination unreachable packets

source quench

Number of received source quench packets

redirects

Number of received redirection packets

echo reply

Number of received replies

parameter problem

Number of received parameter problem packets

timestamp

Number of received time stamp packets

information request

Number of received information request packets

mask requests

Number of received mask requests

mask replies

Number of received mask replies

time exceeded

Number of received expiration packets

Output:

echo

Number of sent echo packets

destination unreachable

Number of sent destination unreachable packets

source quench

Number of sent source quench packets

redirects

Number of sent redirection packets

echo reply

Number of sent replies

parameter problem

Number of sent parameter problem packets

timestamp

Number of sent time stamp packets

information reply

Number of sent information reply packets

mask requests

Number of sent mask requests

mask replies

Number of sent mask replies

time exceeded

Number of sent expiration packets

 

display ip socket

Syntax

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

View

Any view

Parameters

socktype sock-type: Displays the socket information of this type. The sock type is in the range 1 to 3, corresponding to TCP, UDP and raw IP respectively.

task-id: ID of a task, with the value ranging from 1 to 100.

socket-id: ID of a socket, with the value ranging from 0 to 3072.

Description

Use the display ip socket command to display socket information.

Examples

# Display the information about the socket of the TCP type.

<Sysname> display ip socket socktype 1

SOCK_STREAM:

Task = VTYD(18), 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_SENDVPNID SO_SETKEEPALIVE,

socket state = SS_PRIV SS_ASYNC

 

Task = VTYD(18), socketid = 2, Proto = 6,

LA = 10.153.17.99:23, FA = 10.153.17.56:1161,

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

socket option = SO_KEEPALIVE SO_OOBINLINE SO_SENDVPNID SO_SETKEEPALIVE,

socket state = SS_ISCONNECTED SS_PRIV SS_ASYNC

 

Task = VTYD(18), socketid = 3, Proto = 6,

LA = 10.153.17.99:23, FA = 10.153.17.82:1121,

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

socket option = SO_KEEPALIVE SO_OOBINLINE SO_SENDVPNID SO_SETKEEPALIVE,

socket state = SS_ISCONNECTED SS_PRIV SS_ASYNC

Table 2-3 Description on the fields of the display ip socket command

Field

Description

SOCK_STREAM

Indicates the socket type is TCP

SOCK_DGRAM

Indicates the socket type is UDP

SOCK_RAW

Indicates the socket type is raw IP

Task

Task ID

socketid

Socket ID

Proto

Protocol number used by the socket

sndbuf

Sending buffer size of the socket

rcvbuf

Receiving buffer size of the socket

sb_cc

Current data size in the sending buffer. The value makes sense only for the socket of TCP type, because only TCP is able to cache data.

rb_cc

Current data size in the receiving buffer

socket option

Option of a socket

socket state

State of a socket

 

display ip statistics

Syntax

display ip statistics

View

Any view

Parameters

None

Description

Use the display ip statistics command to display the statistics about IP packets.

Related commands: display ip interface, reset ip statistics.

Examples

# Display the statistics about IP packets.

<Sysname> display ip statistics

  Input:   sum            7120             local             112

           bad protocol   0                bad format        0

           bad checksum   0                bad options       0

  Output:  forwarding     0                local             27

           dropped        0                no route          2

           compress fails 0

  Fragment:input          0                output            0

           dropped        0

           fragmented     0                couldn't fragment 0

  Reassembling:sum        0                timeouts          0

Table 2-4 Description on the fields of the display ip statistics command

Field

Description

Input:

sum

Total number of packets received

local

Total number of packets with destination being local

bad protocol

Total number of unknown protocol packets.

Unknown protocol packets are destined to the local device, but the upper layer protocol specified in their IP header cannot be processed by the device. (For example, if a switch is not enabled with the Layer 3 multicast function, it considers IGMP packets as unknown protocol packets.)

bad format

Total number of packets with incorrect header format that contains a wrong version, or has a header length less than 20 bytes.

bad checksum

Total number of packets with incorrect checksum

bad options

Total number of packets with incorrect option

Output:

forwarding

Total number of IP packets forwarded by the local device

local

Total number of IP packets initiated from the local device

dropped

Total number of IP packets discarded

no route

Total number of IP packets for which no route is available

compress fails

Total number of IP packets failed to compress

Fragment:

input

Total number of fragments received

output

Total number of fragments sent

dropped

Total number of fragments discarded

fragmented

Total number of IP packets successfully fragmented

couldn't fragment

Total number of IP packets that cannot be fragmented

Reassembling:

sum

Total number of IP packets reassembled

timeouts

Total number of reassembly timeout IP packets

 

display tcp statistics

Syntax

display tcp statistics

View

Any view

Parameters

None

Description

Use the display tcp statistics command to display the statistics about TCP packets.

Related commands: display tcp status, reset tcp statistics.

Examples

# Display the statistics about TCP connections.

<Sysname> display tcp statistics

Received packets:

     Total: 753

     packets in sequence: 412 (11032 bytes)

     window probe packets: 0, window update packets: 0

     checksum error: 0, offset error: 0, short error: 0

    

     duplicate packets: 4 (88 bytes), partially duplicate packets: 5 (7 bytes)

     out-of-order packets: 0 (0 bytes)

     packets of data after window: 0 (0 bytes)

     packets received after close: 0

    

     ACK packets: 481 (8776 bytes)

     duplicate ACK packets: 7, too much ACK packets: 0

 

Sent packets:

     Total: 665

     urgent packets: 0

     control packets: 5 (including 1 RST)

     window probe packets: 0, window update packets: 2

 

     data packets: 618 (8770 bytes) data packets retransmitted: 0 (0 bytes)

     ACK-only packets: 40 (28 delayed)

 

Retransmitted timeout: 0, connections dropped in retransmitted timeout: 0

Keepalive timeout: 0, keepalive probe: 0, Keepalive timeout, so connections disconnected : 0

Initiated connections: 0, accepted connections: 0, established connections: 0

Closed connections: 0 (dropped: 0, initiated dropped: 0)

Packets dropped with MD5 authentication: 0

Packets permitted with MD5 authentication: 0

Table 2-5 Description on the fields of the display tcp statistics command

Field

Description

Received packets:

Total

Total number of packets received

packets in sequence

Number of packets arriving in sequence

window probe packets

Number of window probe packets received

window update packets

Number of window update packets received

checksum error

Number of checksum error packets received

offset error

Number of offset error packets received

short error

Number of received packets with length being too small

duplicate packets

Number of completely duplicate packets received

partially duplicate packets

Number of partially duplicate packets received

out-of-order packets

Number of out-of-order packets received

packets of data after window

Number of packets outside the receiving window

packets received after close

Number of packets that arrived after connection is closed

ACK packets

Number of ACK packets received

duplicate ACK packets

Number of duplicate ACK packets received

too much ACK packets

Number of ACK packets for data unsent

Sent packets:

Total

Total number of packets sent

urgent packets

Number of urgent packets sent

control packets

Number of control packets sent; in brackets are retransmitted packets

window probe packets

Number of window probe packets sent; in the brackets are resent packets

window update packets

Number of window update packets sent

data packets

Number of data packets sent

data packets retransmitted

Number of data packets retransmitted

ACK-only packets: 40

Number of ACK packets sent; in brackets are delayed ACK packets

Retransmitted timeout

Number of retransmission timer timeouts

connections dropped in retransmitted timeout

Number of connections broken due to retransmission timeouts

Keepalive timeout

Number of keepalive timer timeouts

keepalive probe

Number of keepalive probe packets sent

Keepalive timeout, so connections disconnected

Number of connections broken due to keepalive probe failures

Initiated connections

Number of connections initiated

accepted connections

Number of connections accepted

established connections

Number of connections established

Closed connections

Number of connections closed; in brackets are connections closed accidentally (before receiving SYN from the peer) and connections closed initiatively (after receiving SYN from the peer)

Packets dropped with MD5 authentication

Number of packets dropped with MD5 authentication

Packets permitted with MD5 authentication

Number of packets permitted with MD5 authentication

 

display tcp status

Syntax

display tcp status

View

Any view

Parameters

None

Description

Use the display tcp status command to display the state of all the TCP connections so that you can monitor TCP connections in real time.

Examples

# Display the state of all the TCP connections.

<Sysname> display tcp status

 *: TCP MD5 Connection

TCPCB     Local Add:port      Foreign Add:port        State

03e37dc4  0.0.0.0:4001            0.0.0.0:0           Listening

04217174  100.0.0.204:23      100.0.0.253:65508   Established

Table 2-6 Description on the fields of the display tcp status command

Field

Description

*

If there is an asterisk before a connection, it means that the TCP connection is authenticated through the MD5 algorithm.

TCPCB

TCP control block

Local Add:port

Local IP address and port number

Foreign Add:port

Remote IP address and port number

State

State of the TCP connection

 

display udp statistics

Syntax

display udp statistics

View

Any view

Parameters

None

Description

Use the display udp statistics command to display the statistics about UDP packets.

Related commands: reset udp statistics.

Examples

# Display the statistics about UDP packets.

<Sysname> display udp statistics

Received packets:

     Total: 26320

     checksum error: 0

     shorter than header: 0, data length larger than packet: 0

     no socket on port: 0

     total broadcast or multicast packets : 25006

     no socket broadcast or multicast packets: 24989

     not delivered, input socket full: 0

     input packets missing pcb cache: 1314

Sent packets:

     Total: 7187

Table 2-7 Description on the fields of the display udp statistics command

Field

Description

Received packets:

Total

Total number of received UDP packets

checksum error

Total number of packets with incorrect checksum

shorter than header

Number of packets with data shorter than header

data length larger than packet

Number of packets with data longer than packet

no socket on port

Number of unicast packets with no socket on port

total broadcast or multicast packets

Total number of received broadcast or multicast packets

no socket broadcast or multicast packets

Total number of broadcast or multicast packets without socket on port

not delivered, input socket full

Number of not delivered packets due to a full socket cache

input packets missing pcb cache

Number of packets without matching PCB cache

Sent packets:

Total

Total number of UDP packets sent

 

icmp redirect send

Syntax

icmp redirect send

undo icmp redirect send

View

System view

Parameters

None

Description

Use the icmp redirect send command to enable the device to send ICMP redirection packets.

Use the undo icmp redirect send command to disable the device from sending ICMP redirection packets.

By default, the device is enabled to send ICMP redirection packets.

Examples

# Disable the device from sending ICMP redirection packets.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] undo icmp redirect send

icmp unreach send

Syntax

icmp unreach send

undo icmp unreach send

View

System view

Parameters

None

Description

Use the icmp unreach send command to enable the device to send ICMP destination unreachable packets. After enabled with this feature, the switch, upon receiving a packet with an unreachable destination, discards the packet and then sends a destination unreachable packet to the source host.

Use the undo icmp unreach send command to disable the device from sending ICMP destination unreachable packets.

By default, the device is enabled to send ICMP destination unreachable packets.

Examples

# Disable the device from sending ICMP destination unreachable packets.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] undo icmp unreach send

reset ip statistics

Syntax

reset ip statistics

View

User view

Parameters

None

Description

Use the reset ip statistics command to clear the statistics about IP packets. You can use the display ip statistics command to view the current IP packet statistics.

Related commands: display ip interface.

Examples

# Clear the statistics about IP packets.

<Sysname> reset ip statistics

reset tcp statistics

Syntax

reset tcp statistics

View

User view

Parameters

None

Description

Use the reset tcp statistics command to clear the statistics about TCP packets. You can use the display tcp statistics command to view the current TCP packet statistics.

Examples

# Clear the statistics about TCP packets.

<Sysname> reset tcp statistics

reset udp statistics

Syntax

reset udp statistics

View

User view

Parameters

None

Description

Use the reset udp statistics command to clear the statistics about UDP packets. You can use the display udp statistics command to view the current UDP packet statistics.

Examples

# Clear the statistics about UDP packets.

<Sysname> reset udp statistics

tcp timer fin-timeout

Syntax

tcp timer fin-timeout time-value

undo tcp timer fin-timeout

View

System view

Parameters

time-value: TCP finwait timer, in seconds, with the value ranging from 76 to 3600.

Description

Use the tcp timer fin-timeout command to configure the TCP finwait timer.

Use the undo tcp timer fin-timeout command to restore the default value of the TCP finwait timer.

By default, the value of the TCP finwait timer is 675 seconds.

When the TCP connection state changes from FIN_WAIT_1 to FIN_WAIT_2, the finwait timer is enabled. If the switch does not receive FIN packets before finwait timer times out, the TCP connection will be terminated.

Related commands: tcp timer syn-timeout, tcp window.

Examples

# Configure the value of the TCP finwait timer to 800 seconds.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] tcp timer fin-timeout 800

tcp timer syn-timeout

Syntax

tcp timer syn-timeout time-value

undo tcp timer syn-timeout

View

System view

Parameters

time-value: TCP synwait timer, in seconds, with the value ranging from 2 to 600.

Description

Use the tcp timer syn-timeout command to configure the TCP synwait timer.

Use the undo tcp timer syn-timeout command to restore the default value of the TCP synwait timer.

By default, the value of the TCP synwait timer is 75 seconds.

When sending the SYN packet, TCP starts the synwait timer. If the response packet is not received before synwait times out, the TCP connection will be terminated.

Related commands: tcp timer fin-timeout, tcp window.

Examples

# Configure the value of the TCP synwait timer to 80 seconds.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] tcp timer syn-timeout 80

tcp window

Syntax

tcp window window-size

undo tcp window

View

System view

Parameters

window-size: Size of the transmission and receiving buffers of the connection-oriented socket, measured in kilobytes (KB), in the range of 1 to 32.

Description

Use the tcp window command to configure the size of the transmission and receiving buffers of the connection-oriented socket.

Use the undo tcp window command to restore the default size of the transmission and receiving buffers of the connection-oriented socket.

By default, the size of the transmission and receiving buffers is 8 KB.

Related commands: tcp timer fin-timeout, tcp timer syn-timeout.

Examples

# Configure the size of the transmission and receiving buffers of the connection-oriented socket to 3 KB.

<Sysname> system-view

System View: return to User View with Ctrl+Z.

[Sysname] tcp window 3

 

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