Table of Contents

1 IP Address Configuration Commands· 1-1

IP Address Configuration Commands· 1-1

display ip interface· 1-1

display ip interface brief 1-2

ip address· 1-3

2 IP Performance Configuration Commands· 2-1

IP Performance Configuration Commands· 2-1

display fib· 2-1

display fib ip-address· 2-2

display fib acl 2-3

display fib | 2-3

display fib statistics· 2-4

display icmp statistics· 2-4

display ip socket 2-5

display ip statistics· 2-6

display tcp statistics· 2-7

display tcp status· 2-10

display udp statistics· 2-10

icmp redirect send· 2-11

icmp unreach send· 2-12

reset ip statistics· 2-12

reset tcp statistics· 2-13

reset udp statistics· 2-13

tcp timer fin-timeout 2-13

tcp timer syn-timeout 2-14

tcp window· 2-15

 

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.

<device> 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 display ip interface command output description

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	IP address. Primary indicates it is the primary IP address and Sub indicates it is a secondary IP address
Broadcast address	Broadcast address
The Maximum Transmit Unit	Max transmit unit
IP packets input number: 9678, bytes: 475001, multicasts: 7 IP packets output number: 8622, bytes: 391084, multicasts: 0	Total number of input/output packets, bytes, and multicast packets
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-interface1.

<device> 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 display ip interface brief command output description

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	Description information for the interface

 

ip address

Syntax

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

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

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: Length of a subnet mask, in the range of 0 to 32.

sub: Specifies a secondary IP address of a VLAN or loopback interface.

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.

Note that:

l          If you execute the undo ip address command without any parameter, the device deletes both primary and secondary 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 specified secondary IP addresses.

 

 

Related commands: display ip interface.

Examples

# Assign the primary IP address 129.12.0.1 and secondary IP address 129.12.1.1 to VLAN interface 1 with subnet mask 255.255.255.0.

<device> system-view

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

[device] interface vlan-interface 1

[device-Vlan-interface1] ip address 129.12.0.1 255.255.255.0

[device-Vlan-interface1] ip address 129.12.1.1 255.255.255.0 sub

 

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.

<device> 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 display fib command output description

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, 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.

Examples

# Display the FIB entries whose destination addresses match 12.158.10.0 in the natural mask range.

<device> 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 the FIB entries whose destination addresses are in the range of 12.158.10.0/24 to 12.158.10.6/24.

<device> 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 ACL in H3C WX3000 Series Unified Switches Switching Engine Configuration Guide

Examples

# Display ACL 2001.

<device>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.

<device> 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

begin: Displays the FIB entries from the first one containing the regular expression string.

exclude: Displays only those FIB entries excluding the regular expression character string.

include: Display only those FIB entries containing the regular expression character string.

regular-expression: Regular expression. For details about regular expression, refer to File System Management in H3C WX3000 Series Unified Switches Switching Engine Configuration Guide.

Description

Use the display fib | command to output the FIB entries related to the specific character string from the buffer according to the regular expression.

Examples

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

<device> 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.

<device> 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.

<device> 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 display icmp statistics command output description

Field	Description
bad formats	Number of input wrong format packets
bad checksum	Number of input wrong checksum packets
echo	Number of input/output echo packets
destination unreachable	Number of input/output destination unreachable packets
source quench	Number of input/output source quench packets
redirects	Number of input/output redirection packets
echo reply	Number of input/output replies
parameter problem	Number of input/output parameter problem packets
timestamp	Number of input/output time stamp packets
information request	Number of input information request packets
mask requests	Number of input/output mask requests
mask replies	Number of input/output mask replies
information reply	Number of output information reply packets
time exceeded	Number of input/output expiration packets

 

display ip socket

Syntax

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

View

Any view

Parameters

sock-type: Type of a socket, ranging from 1 to 3. These values correspond to SOCK_STREAM (TCP socket), SOCK_DGRAM (UDP socket or socket based on the link layer), and SOCK_RAW (RAW IP socket).

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 the information of the current socket.

Examples

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

<device> 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 display ip socket command output description

Field	Description
SOCK_STREAM	Indicates the socket type is TCP
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.

<device> 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 display ip statistics command output description

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
	bad format	Total number of packets with incorrect format
	bad checksum	Total number of packets with incorrect checksum
	bad options	Total number of packets with incorrect option
Output:	forwarding	Total number of packets forwarded
	local	Total number of packets sent from the local
	dropped	Total number of packets discarded
	no route	Total number of packets for which no route is available
	compress fails	Total number of packets failed to compress
Fragment:	input	Total number of fragments received
	output	Total number of fragments sent
	dropped	Total number of fragments dropped
	fragmented	Total number of packets successfully fragmented
	couldn't fragment	Total number of packets that can’t be fragmented
Reassembling:	sum	Total number of packets reassembled
	timeouts	Total number of reassembly timeout 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.

<device> 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 display tcp statistics command output description

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
	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.

<device> 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 display tcp status command output description

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.

<device> 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 display udp statistics command output description

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 transmitted 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 because the socket cache is full
	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.

<device> system-view

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

[device] 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.

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.

<device> system-view

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

[device] 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.

Related commands: display ip interface, display ip statistics.

Examples

# Clear the statistics about IP packets.

<device> 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.

Related commands: display tcp statistics.

Examples

# Clear the statistics about TCP packets.

<device> 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.

Related commands: display udp statistics.

Examples

# Clear the statistics about UDP packets.

<device> 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 value, 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 device 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.

<device> system-view

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

[device] 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 value, 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.

<device> system-view

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

[device] 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 3KB.

<device> system-view

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

[device] tcp window 3