Contents

IPv6 NetStream commands· 1

display fpga-working-mode status· 1

display ipv6 netstream cache· 2

display ipv6 netstream export 5

display ipv6 netstream template· 6

fpga-working-mode· 10

ipv6 netstream·· 11

ipv6 netstream export host 11

ipv6 netstream export rate· 12

ipv6 netstream export source· 13

ipv6 netstream export template refresh-rate· 13

ipv6 netstream export version· 14

ipv6 netstream max-entry· 15

ipv6 netstream sampler 16

ipv6 netstream timeout active· 17

ipv6 netstream timeout inactive· 17

reset ipv6 netstream statistics· 18

 

IPv6 NetStream commands

IPv6 NetStream is supported only in R6515P06 and later versions.

display fpga-working-mode status

Use display fpga-working-mode status to display the working mode of the NetStream interface module.

Syntax

display fpga-working-mode status slot slot-number

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

slot slot-number: Specifies an IRF member device by its member ID.

Examples

# Display the working mode of the NetStream interface module.

[Sysname] display fpga-working-mode status slot 1

Slot 1 Fpga-working-mode status:

     Fpga-work-mode in use: NORMAL MODE(default)

      Fpga-work-mode for next reboot: NORMAL MODE(default)

Table 1 Command output

Field	Description
Fpga-work-mode in use	Current working mode of the NetStream interface module: ·     NORMAL MODE—In this mode, the device does not support NetStream. ·     NETSTREAM—In this mode, the NetStream interface module works in the unidirectional NetStream mode. ·     NETSTREAM SESSION—In this mode, the NetStream interface module works in the bidirectional session-based NetStream mode. Session-based IPv6 NetStream is not supported.
Fpga-work-mode for next reboot	The working mode of the NetStream interface module for next reboot: ·     NORMAL MODE—In this mode, the device does not support NetStream. ·     NETSTREAM—In this mode, the NetStream interface module works in the unidirectional NetStream mode. ·     NETSTREAM SESSION—In this mode, the NetStream interface module works in the bidirectional session-based NetStream mode. Session-based IPv6 NetStream is not supported.

 

Related commands

fpga-working-mode

display ipv6 netstream cache

Use display ipv6 netstream cache to display IPv6 NetStream entry information.

Syntax

display ipv6 netstream cache [ verbose ] [ type { ip | ipl2 | l2 } ] [ destination destination-ipv6 | interface interface-type interface-number | source source-ipv6 ] * [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

verbose: Displays detailed information about IPv6 NetStream entries. If you do not specify this keyword, this command displays brief information about IPv6 NetStream entries.

type: Specifies the IPv6 NetStream entry type. If you do not specify this keyword, this command displays information about all types of IPv6 NetStream entries.

ip: Specifies IP flow NetStream entries.

ipl2: Specifies Layer 2 and Layer 3 flow NetStream entries.

l2: Specifies Layer 2 flow NetStream entries.

destination destination-ipv6: Specifies a destination IPv6 address. If you specify this option, this command does not display Layer 2 flow NetStream entries.

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

source source-ipv6: Specifies a source IPv6 address. If you specify this option, this command does not display Layer 2 flow NetStream entries.

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays information about IPv6 NetStream entries for all member devices.

verbose: Displays detailed information about IPv6 NetStream entries.

Usage guidelines

Statistics about packets containing IP headers are classified as ipl2 (Layer 2 and Layer 3). Statistics about packets without IP headers are classified as l2 (Layer 2).

Examples

# Display detailed information about IPv6 NetStream entries.

<Sysname> display ipv6 netstream cache verbose

IPv6 NetStream cache information:

  Active flow timeout             : 5 min

  Inactive flow timeout           : 300 sec

  Max number of entries           : 1048576

  IPv6 active flow entries        : 1

  MPLS active flow entries        : 0

  IPL2 active flow entries        : 1

  IPv6 flow entries counted       : 10

  MPLS flow entries counted       : 0

  IPL2 flow entries counted       : 20

  Last statistics resetting time  : 01/01/2019 at 00:01:02

 

IPv6 packet size distribution (1103746 packets in total):

1-32   64   96  128  160  192  224  256  288  320  352  384  416  448  480

.249 .694 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000 .000

 

512  544  576 1024 1536 2048 2560 3072 3584 4096 4608 >4608

.000 .000 .027 .000 .027 .000 .000 .000 .000 .000 .000 .000

 

Protocol          Total Packets    Flows  Packets Active(sec) Idle(sec)

                  Flows /sec       /sec   /flow   /flow       /flow

--------------------------------------------------------------------------

TCP-Telnet      2656855     372        4       86        49        27

TCP-FTP         5900082      86        9        9        11        33

TCP-FTPD        3200453    1006        5      193        45        33

TCP-WWW       546778274   11170      887       12         8        32

TCP-other      49148540    3752       79       47        30        32

UDP-DNS       117240379     570      190        3         7        34

UDP-other      45502422    2272       73       30         8        37

ICMP           14837957     125       24        5        12        34

IP-other          77406       5        0       47        52        27

 

Type DstIP(Port)         SrcIP(Port)      Pro TC  FlowLbl If(Direct)   Pkts

     DstMAC(VLAN)        SrcMAC(VLAN)

     TopLblType(IP/MASK) Lbl-Exp-S-List

--------------------------------------------------------------------------

IP   2001::1(1024)      2002::1(21)        6   0   0x6000  GE1/0/1(I)  42996

     TcpFlag:    0x1b

     DstMask:      24   SrcMask:      24

     DstAS:         0   SrcAS:         0

     NextHop:           2001::2

     BGPNextHop:        0:0:0:0:0:0:0:0

     InVRF:      mvpn

     SamplerMode:   0  SamplerInt:    0

     Active:      120   Bytes/Pkt:   152

IP&  2003::1(2048)      2008::1(0)         1   0   0x0     GE1/0/2(O)  10

IP&  2010::1(1024)      2020::1(67)        17  0   0x12345 GE1/0/3(I)  1848

Table 2 Command output

Field	Description
Active flow timeout	Aging timer for active flows, in minutes.
Inactive flow timeout	Aging timer for inactive flows, in seconds.
Max number of entries	Maximum number of IPv6 flows allowed in the cache.
IPv6 active flow entries	Number of active IPv6 flows in the cache.
MPLS active flow entries	This field is not supported in the current software version. Number of active IPv6 MPLS flows in the cache.
IPL2 active flow entries	Number of active Layer 2 flows with IPv6 protocol information.
IPv6 flow entries counted	Number of IPv6 flows that have been counted.
MPLS flow entries counted	This field is not supported in the current software version. Number of MPLS flows that have been counted.
IPL2 flow entries counted	Number of Layer 2 flows (with IPv6 protocol information) that have been counted.
Last statistics resetting time	Last time the reset ipv6 netstream statistics command was executed. This field displays Never if you have never executed this command.
IPv6 packet size distribution (1103746 packets in total):	Distribution of IPv6 packets by packet size, and the bracketed number is the total number of IPv6 packets. The value is displayed in the proportion of the number of IPv6 packets of the specified sizes to the total number of IPv6 packets. The value is displayed with three decimal places.
1-32   64   96  128  160  192  224  256  288  320  352  384  416  448  480 512  544  576 1024 1536 2048 2560 3072 3584 4096 4608 >4608	Range of IPv6 packet length (excluding data link layer header). ·     For the values in the range of 1 to 576 bytes, the range increases in the step of 32 bytes. For example, 1-32 shows the number of packets with the size of 1 to 32 bytes. 64 shows the number of packets with the size of 33 to 64 bytes. ·     For the values greater than 1024 bytes, the range increases in the step of 512 bytes. For example, 1536 shows the number of packets with the size of 1025 to 1536 bytes. ·     Packets with the size of 577 to 1024 bytes are recorded in the 1024 entry.
Protocol     Total Flows     Packets/Sec Flow/Sec   Packets/flow Active(sec)/ flow   Idle(sec)/flow	Statistics of packets by protocol type: ·     Protocol type. ·     Total number of flows. ·     Number of packets per second. ·     Number of flows per second. ·     Number of packets per flow. ·     Active time (in seconds) of each flow. ·     Inactive time (in seconds) of each flow.
Type DstIP(Port)        SrcIP(Port)        Pro TC  FlowLbl    If(Direct)   Pkts	Statistics of the active flows in the current cache: ·     Flow type. Flows are classified into the following types: ¡     IP flows. ¡     Layer 2 flows with IPv6 protocol information (IPL2). ¡     MPLS flows without IP options (MPLS). This field is not supported in the current software version. ¡     MPLS flows with IP options (IP&MPLS). This field is not supported in the current software version. ·     Destination IPv6 address (destination port). ·     Source IPv6 address (source port). ·     Protocol number. ·     Traffic classification. ·     Flow label. ·     Interface name (direction). ·     Number of packets. ICMPv6 packets do not contain port number fields, so the type and code fields are captured. The value for the destination port represents these two fields: ·     The highest 8 bits represent the type field. ·     The lowest 8 bits represent the code field. The value for the source port is set to 0 and does not indicate any statistics.
DstMAC(VLAN)          SrcMAC(VLAN)	Layer 2 information for the active flows in the current cache: ·     Destination MAC address, followed by the destination VLAN ID in parenthesis. ·     Source MAC address, followed by the source VLAN ID in parenthesis.
TopLblType(IP/MASK)      Lbl-Exp-S-List	This field is not supported in the current software version. Information about the active MPLS flows in the current cache: ·     Type of the labels at the top of the label stack: ¡     IP address associated with the label. ¡     Mask associated with the label. ·     Label list: ¡     Lbl—20-bit label value. ¡     Exp—3-bit field for implementing QoS. ¡     S—1-bit bottom of stack flag. The S field is set to 1 if the label is the bottom label and set to 0 if not.
TcpFlag: DstMask:   SrcMask: DstAS:       SrcAS: NextHop: BGPNextHop: OutVRF:     InVRF: SamplerMode:                  SamplerInt: Active:       Bytes/Pkt:	Other information about the active flows in the cache: ·     TCP flag. ·     Destination mask. ·     Source mask. ·     Destination AS. ·     Source AS. ·     Routing next hop. ·     BGP next hop. ·     VPN to which the outbound packets belong. ·     VPN to which the inbound packets belong. ·     Sampling mode. IPv6 NetStream supports the following sampling modes: ¡     0—No sampling. ¡     1—Fixed sampling. ¡     2—Random sampling. ·     Sampling interval. ·     Flow's active time. ·     Number of bytes per packet.

 

display ipv6 netstream export

Use display ipv6 netstream export to display information about the IPv6 NetStream data export.

Syntax

display ipv6 netstream export

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display information about the IPv6 NetStream data export.

<Sysname> display ipv6 netstream export

IPv6 export information:

  Flow source interface                              : GigabitEthernet1/0/1

  Flow destination VPN instance                      : VPN1

  Flow destination IPv6 address (UDP)                : 40::1 (30000)

  Version  9 exported flow number                    : 16

  Version  9 exported UDP datagram number (failed)   : 16 (0)

  Version 10 exported flow number                    : 0

  Version 10 exported UDP datagram number (failed)   : 0 (0)

Table 3 Command output

Field	Description
IPv6 export information	Information about the IPv6 NetStream data export.
Flow source interface	Source interface from which the IPv6 NetStream data is exported.
Flow destination VPN instance	VPN to which the destination address of the IPv6 NetStream data export belongs.
Flow destination IPv6 address (UDP)	Destination IPv6 address and UDP port number of the IPv6 NetStream data export.
Version 9 exported flow number	Number of flows that are exported in the version 9 format.
Version 9 exported UDP datagram number (failed)	Number of UDP packets that are sent in the version 9 format. The value in the parentheses displays the number of UDP packets that failed to be sent.
Version 10  exported flow number	Number of flows that are exported in the version 10 format.
Version 10 exported UDP datagram number (failed)	Number of UDP packets that are sent in the version 10 format. The value in the parentheses displays the number of UDP packets that failed to be sent.

 

display ipv6 netstream template

Use display ipv6 netstream template to display IPv6 NetStream template information.

Syntax

display ipv6 netstream template [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command displays IPv6 NetStream template information for the master device.  

Examples

# Display IPv6 NetStream template information.

<Sysname> display ipv6 netstream template

 Flow template refresh frequency            : 20

 Flow template refresh interval             : 30 min

 Active flow templates                      : 4

 Created flow templates                     : 4

L2L3 outbound template:

 Template ID                : 3307

 Field count                : 25

 Field type                   Field length (bytes)

------------------------------------------------------------------------------

 Out packets                  8

 Out bytes                    8

 First forwarded              4

 Last forwarded               4

 Input Interface Index        4

 Output Interface Index       4

 IPv6 source address          16

 IPv6 destination address     16

 Direction                    1

 IPv6 flow label              3

 Source VLAN                  2

 Destination VLAN             2

 L4 source port               2

 L4 destination port          2

 IP protocol version          1

 TCP flags                    1

 Protocol                     1

 Source ToS                   1

 Sampling algorithm           1

 PAD                          1

 PAD                          1

 PAD                          1

 Sampling interval            4

 Source AS                    4

 Destination AS               4

L2L3 inbound template:

 Template ID                : 3306

 Field count                : 25

 Field type                   Field length (bytes)

------------------------------------------------------------------------------

 In packets                   8

 In bytes                     8

 First forwarded              4

 Last forwarded               4

 Input Interface Index        4

 Output Interface Index       4

 IPv6 source address          16

 IPv6 destination address     16

 Direction                    1

 IPv6 flow label              3

 Source VLAN                  2

 Destination VLAN             2

 L4 source port               2

 L4 destination port          2

 IP protocol version          1

 TCP flags                    1

 Protocol                     1

 Source ToS                   1

 Sampling algorithm           1

 PAD                          1

 PAD                          1

 PAD                          1

 Sampling interval            4

 Source AS                    4

 Destination AS               4

L3 outbound template:

 Template ID                : 3305

 Field count                : 28

 Field type                   Field length (bytes)

------------------------------------------------------------------------------

 Out packets                  8

 Out bytes                    8

 First forwarded              4

 Last forwarded               4

 Input Interface Index        4

 Output Interface Index       4

 IPv6 source address          16

 IPv6 destination address     16

 IPv6 NextHop                 16

 PAD                          1

 IPv6 flow label              3

 Source AS                    4

 Destination AS               4

 L4 source port               2

 L4 destination port          2

 IP protocol version          1

 TCP flags                    1

 Protocol                     1

 Source ToS                   1

 IPv6 source mask             1

 IPv6 destination mask        1

 Direction                    1

 Forwarding offset            1

 Out VPN ID                   2

 Sampling algorithm           1

 PAD                          1

 Sampling interval            4

 APP ID                       4

L3 inbound template:

 Template ID                : 3304

 Field count                : 28

 Field type                   Field length (bytes)

------------------------------------------------------------------------------

 In packets                   8

 In bytes                     8

 First forwarded              4

 Last forwarded               4

 Input Interface Index        4

 Output Interface Index       4

 IPv6 source address          16

 IPv6 destination address     16

 IPv6 NextHop                 16

 PAD                          1

 IPv6 flow label              3

 Source AS                    4

 Destination AS               4

 L4 source port               2

 L4 destination port          2

 IP protocol version          1

 TCP flags                    1

 Protocol                     1

 Source ToS                   1

 IPv6 source mask             1

 IPv6 destination mask        1

 Direction                    1

 Forwarding offset            1

 In VPN ID                    2

 Sampling algorithm           1

 PAD                          1

 Sampling interval            4

 APP ID                       4

Table 4 Command output

Field	Description
Flow template refresh frequency	Refresh frequency at which the templates are sent, in packets.
Flow template refresh interval	Refresh interval at which the templates are sent, in minutes.
Active flow templates	Number of active IPv6 NetStream templates.
Created flow templates	Number of templates that have been created.
Field count	Total number of fields in the template.
Field type	Type of a field in the template.
Flows	Number of flows.
Out packets	Number of sent packets.
In packets	Number of received packets.
Out bytes	Number of sent bytes.
In bytes	Number of received bytes.
First forwarded	System time when the first packet was forwarded, accurate to milliseconds.
Last forwarded	System time when the last packet was forwarded, accurate to milliseconds.
Direction	Traffic direction.
L4 source port	Source UDP or TCP port.
L4 destination port	Destination UDP or TCP port.
Sampling algorithm	Sampling algorithm.
PAD	Padding string.
Sampling interval	Sampling rate.

 

fpga-working-mode

Use fpga-working-mode to specify a working mode for the NetStream interface module.

Syntax

fpga-working-mode slot slot-number { 0 | 1 }

Default

The NetStream interface module works in mode 0 and the device does not support NetStream.

Views

System view

Predefined user roles

network-admin

Parameters

slot slot-number: Specifies an IRF member device by its member ID.

0: Specifies the normal mode. NetStream is not supported.

1: Specifies the NetStream mode. The NetStream interface module works in the unidirectional NetStream mode.

Usage guidelines

To make the configuration take effect, save the configuration and reboot the device. Before rebooting the device, evaluate the effect of the device reboot on the network.

Examples

# Configure the NetStream interface module to work in the unidirectional NetStream mode.

<Sysname> system-view

[Sysname] fpga-working-mode slot 1 1

Related commands

display fpga-working-mode status

ipv6 netstream

Use ipv6 netstream to enable IPv6 NetStream on an interface.

Use undo ipv6 netstream to disable IPv6 NetStream on an interface.

Syntax

ipv6 netstream { inbound | outbound }

undo ipv6 netstream { inbound | outbound }

Default

IPv6 NetStream is disabled on an interface.

Views

Interface view

Predefined user roles

network-admin

Parameters

inbound: Enables IPv6 NetStream for incoming traffic.

outbound: Enables IPv6 NetStream for outgoing traffic.

Examples

# Enable IPv6 NetStream for inbound traffic on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] ipv6 netstream inbound

ipv6 netstream export host

Use ipv6 netstream export host to specify a destination host for IPv6 NetStream data export.

Use undo ipv6 netstream export host to remove the specified destination host or all destination hosts that are configured in the current view.

Syntax

ipv6 netstream export host { ipv4-address | ipv6-address } udp-port [ vpn-instance vpn-instance-name ]

undo ipv6 netstream export host [ ipv4-address | ipv6-address ] [ vpn-instance vpn-instance-name ]

Default

No destination host is specified for IPv6 NetStream data export.

Views

System view

Predefined user roles

network-admin

Parameters

ipv4-address: Specifies the destination IPv4 address.

ipv6-address: Specifies the destination IPv6 address.

udp-port: Specifies the destination UDP port number in the range of 0 to 65535.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance to which the destination host belongs. The vpn-instance-name argument is a case-sensitive string of 1 to 31 characters. If the destination is on the public network, do not specify this option.

Usage guidelines

In system view, you can specify a maximum of four IPv4 destination hosts and four IPv6 destination hosts, respectively. If you specify a destination host with the same destination address but different UDP ports in the same view, the most recent configuration takes effect. You can specify destination hosts with the same destination address and UDP port but different VPN instances.

IPv6 NetStream traditional data is exported to all destination hosts in system view.

Examples

# In system view, specify 40::1 as the IP address of the destination host and UDP port 5000 as the export destination port number.

<Sysname> system-view

[Sysname] ipv6 netstream export host 40::1 5000

Related commands

ipv6 netstream export source

ipv6 netstream export rate

Use ipv6 netstream export rate to limit the IPv6 NetStream data export rate.

Use undo ipv6 netstream export rate to restore the default.

Syntax

ipv6 netstream export rate rate

undo ipv6 netstream export rate

Default

The export rate of IPv6 NetStream data is not limited.

Views

System view

Predefined user roles

network-admin

Parameters

rate: Specifies the export rate in the range of 1 to 1000.

Usage guidelines

This command sets the maximum number of IPv6 NetStream packets that can be exported per second. Packets that cannot be exported due to the export rate limit are buffered for later export. When the buffer is full, the system will temporarily invalidate the rate limit and export packets as fast as possible until the buffer has space for new packets.

Examples

# Allow a maximum of 10 packets to be exported per second.

<Sysname> system-view

[Sysname] ipv6 netstream export rate 10

ipv6 netstream export source

Use ipv6 netstream export source to specify the source interface for data packets sent to NetStream servers. The IPv6 address of the interface is used as the source IPv6 address of the data packets.

Use undo ipv6 netstream export source to restore the default.

Syntax

ipv6 netstream export source interface interface-type interface-number

undo ipv6 netstream export source

Default

The packets take the IPv6 address of the output interface as the source IPv6 address.

Views

System view

Predefined user roles

network-admin

Parameters

interface-type interface-number: Specifies a source interface by its type and number for the IPv6 NetStream data export.

Usage guidelines

As a best practice, connect the management Ethernet interface to a NetStream server, and configure the interface as the source interface.

Examples

# In system view, specify GigabitEthernet 1/0/1 as the source interface for IPv6 NetStream traditional data packets.

<Sysname> system-view

[Sysname] ipv6 netstream export source interface gigabitethernet 1/0/1

ipv6 netstream export template refresh-rate

Use ipv6 netstream export template refresh-rate to set the refresh rate for the IPv6 NetStream version 9 or version 10 template.

Use undo ipv6 netstream export template refresh-rate to restore the default.

Syntax

ipv6 netstream export template refresh-rate { packet packets | time minutes }

undo ipv6 netstream export template refresh-rate { packet | time }

Default

The packet count-based refresh rate is 20 packets, and the time-based refresh interval is 30 minutes.

Views

System view

Predefined user roles

network-admin

Parameters

packet packets: Specifies the number of packets that are sent before the template is sent. The value range is 1 to 600.

time minutes: Specifies the interval at which the template is sent, in the range of 1 to 3600 minutes.

Usage guidelines

Version 9 and version 10 are template-based and support user-defined formats. An IPv6 NetStream device must send the version 9 or version 10 template to NetStream servers regularly, because the servers do not permanently save templates.

The refresh rate can be packet count-based or time-based. If both settings are configured, the template is sent when either of the conditions is met.

Examples

# Configure the device to send the IPv6 NetStream version 9 or version 10 template every 100 packets.

<Sysname> system-view

[Sysname] ipv6 netstream export template refresh-rate packet 100

ipv6 netstream export version

Use ipv6 netstream export version 9 to export IPv6 NetStream data in the version 9 format and choose whether to record AS and BGP next hop information.

Use ipv6 netstream export version 10 to export IPv6 NetStream data in the version 10 format and choose whether to record AS and BGP next hop information.

Use undo ipv6 netstream export version to restore the default.

Syntax

ipv6 netstream export version { 9 | 10 } { origin-as | peer-as } [ bgp-nexthop ]

undo ipv6 netstream export version

Default

The version 9 format is used to export IPv6 NetStream data.

The peer AS numbers are recorded. The BGP next hop is not recorded.

Views

System view

Predefined user roles

network-admin

Parameters

origin-as: Records the source AS of the source address and the destination AS of the destination address.

peer-as: Records the ASs before and after the AS where the NetStream device resides as the source AS and destination AS, respectively.

bgp-nexthop: Records BGP next hops.

Usage guidelines

Only one version format can take effect on the device. If you execute the  ipv6 netstream export version command multiple times, the most recent configuration takes effect.

An IPv6 NetStream entry records the source IPv6 address, destination IPv6 address, and two AS numbers for each address. You can choose to configure which AS numbers are to be exported as the source AS and destination AS.

In version 9 and version 10 formats, you can also choose whether to record the BGP next hop information.

Examples

# Configure the device to export IPv6 NetStream data in the version 9 format, and specify the IPv6 NetStream data to include the source AS and destination AS.

<Sysname> system-view

[Sysname] ipv6 netstream export version 9 origin-as

ipv6 netstream max-entry

Use ipv6 netstream max-entry to set the upper limit for IPv6 NetStream entries or specify the processing method when the upper limit is reached.

Use undo ipv6 netstream max-entry to restore the default.

Syntax

ipv6 netstream max-entry { max-entries | aging | disable-caching }

undo ipv6 netstream max-entry

Default

A maximum of 1048576 IPv6 NetStream entries can be cached.

Views

System view

Predefined user roles

network-admin

Parameters

max-entries: Specifies the upper limit for IPv6 NetStream entries that the cache can accommodate. The value range for this argument is 1000 to 1048576.

aging: Ages out the oldest entries when the upper limit is reached.

disable-caching: Disables creation of a new entry when the upper limit is reached.

Usage guidelines

The max-entries argument takes effect on each IRF member device.

If you execute the ipv6 netstream max-entry max-entries command multiple times, the most recent configuration takes effect.

If you execute the ipv6 netstream max-entry { aging | disable-caching } command multiple times, the most recent configuration takes effect.

After you execute the ipv6 netstream max-entry max-entries command, the maximum number of IPv4 entries can be cached in the output of the display ip netstream cache command is changed simultaneously. However, the actual maximum number of IPv4 entries can be cached is limited by the ip netstream max-entry command.

Examples

# Set the upper limit to 5000 for IPv6 NetStream entries.

<Sysname> system-view

[Sysname] ipv6 netstream max-entry 5000

# Disable creation of a new entry when the upper limit is reached.

<Sysname> system-view

[Sysname] ipv6 netstream max-entry disable-caching

# Configure the device to age out the oldest entries when the upper limit is reached.

<Sysname> system-view

[Sysname] ipv6 netstream max-entry aging

ipv6 netstream sampler

Use ipv6 netstream sampler to enable IPv6 NetStream sampling.

Use undo ipv6 netstream sampler to disable IPv6 NetStream sampling.

Syntax

ipv6 netstream { inbound | outbound } sampler sampler-name

undo ipv6 netstream { inbound | outbound } sampler

Default

IPv6 NetStream sampling is disabled.

Views

Interface view

Predefined user roles

network-admin

Parameters

inbound: Enables IPv6 NetStream sampling in the inbound direction.

outbound: Enables IPv6 NetStream sampling in the outbound direction.

sampler sampler-name: Specifies a sampler by its name. The name is a case-insensitive string of 1 to 31 characters.

Usage guidelines

By default, IPv6 NetStream collects all data of target flows. If the flow traffic is heavy, IPv6 NetStream is resource-consuming and can cause high CPU usage, which impacts the device forwarding performance. IPv6 NetStream sampling is helpful to decrease the NetStream traffic volume. If the collected statistics can basically reflect the network status, you can enable this feature and set a proper sampling rate. The higher the sampling rate, the less impact on device performance.

Examples

# Use sampler abc for inbound IPv6 NetStream sampling on GigabitEthernet 1/0/1.

<Sysname> system-view

[Sysname] interface gigabitethernet 1/0/1

[Sysname-GigabitEthernet1/0/1] ipv6 netstream inbound

[Sysname-GigabitEthernet1/0/1] ipv6 netstream inbound sampler abc

ipv6 netstream timeout active

Use ipv6 netstream timeout active to set the aging timer for active flows.

Use undo ipv6 netstream timeout active to restore the default.

Syntax

ipv6 netstream timeout active minutes

undo ipv6 netstream timeout active

Default

The aging timer is 5 minutes for active flows.

Views

System view

Predefined user roles

network-admin

Parameters

minutes: Sets the aging timer for active flows, in the range of 1 to 60 minutes.

Usage guidelines

A flow is considered active if packets for the IPv6 NetStream entry arrive before the timer set by this command expires.

Examples

# Set the aging timer to 4 minutes for active flows.

<Sysname> system-view

[Sysname] ipv6 netstream timeout active 4

Related commands

ipv6 netstream timeout inactive

ipv6 netstream timeout inactive

Use ipv6 netstream timeout inactive to set the aging timer for inactive flows.

Use undo ipv6 netstream timeout inactive to restore the default.

Syntax

ipv6 netstream timeout inactive seconds

undo ipv6 netstream timeout inactive

Default

The aging timer is 300 seconds for inactive flows.

Views

System view

Predefined user roles

network-admin

Parameters

seconds: Sets the aging timer for inactive flows, in the range of 10 to 3600 seconds.

Usage guidelines

A flow is considered inactive if no packet for the IPv6 NetStream entry arrives before the timer set by this command expires.

Examples

# Set the aging timer to 60 seconds for inactive flows.

<Sysname> system-view

[Sysname] ipv6 netstream timeout inactive 60

Related commands

ipv6 netstream timeout active

reset ipv6 netstream statistics

Use reset ipv6 netstream statistics to age out all flows in the cache and export IPv6 NetStream data.

Syntax

reset ipv6 netstream statistics

Views

User view

Predefined user roles

network-admin

Usage guide

It takes the system several minutes to execute the command. During this period, the system does not collect IPv6 NetStream data.

Examples

# Age out and export all IPv6 NetStream data.

<Sysname> reset ipv6 netstream statistics

This process may take a few minutes.

NetStream statistic function is disabled during this process.