Fast forwarding commands 1

display ip fast-forwarding aging-time· 1

display ip fast-forwarding cache· 1

display ip fast-forwarding fragcache· 2

ip fast-forwarding aging-time· 3

ip fast-forwarding load-sharing· 4

reset ip fast-forwarding cache· 5

 

display ip fast-forwarding aging-time

Use display ip fast-forwarding aging-time to display the aging time of fast forwarding entries.

Syntax

display ip fast-forwarding aging-time

Views

Any view

Predefined user roles

network-admin

network-operator

Examples

# Display the aging time of fast forwarding entries.

<Sysname> display ip fast-forwarding aging-time

 Aging time: 30s

Related commands

ip fast-forwarding aging-time

display ip fast-forwarding cache

Use display ip fast-forwarding cache to display fast forwarding table information.

Syntax

display ip fast-forwarding cache [ ip-address ] [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

ip-address: Specifies an IP address. If you do not specify the ip-address argument, this command displays all fast forwarding entries.

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify this option, the command displays fast forwarding entries on all member devices.

Usage guidelines

This command displays fast forwarding entries. Each entry includes the source IP address, source port number, destination IP address, destination port number, protocol number, input and output interfaces, and internal tag of a data flow.

Examples

# Display all fast forwarding entries.

<Sysname> display ip fast-forwarding cache

Total number of fast-forwarding entries: 2

SIP             SPort DIP             DPort Pro Input_If    Output_If   Flg

192.168.0.71    23    192.168.0.18    3313  6   InLoop0     M-GE0/0/0   1

192.168.0.18    3313  192.168.0.71    23    6   M-GE0/0/0   InLoop0     1

Table 1 Command output

Field	Description
SIP	Source IP address.
SPort	Source port number.
DIP	Destination IP address.
DPort	Destination port number.
Pro	Protocol number.
Input_If	Input interface type and number. If no interface is involved in fast forwarding, this field displays N/A. If the input interface does not exist, this field displays a hyphen (-).
Output_If	Output interface type and number. If no interface is involved in fast forwarding, this field displays N/A. If the output interface does not exist, this field displays a hyphen (-).
Flg	Internal tag, marking internal operation information, such as fragmentation.

 

Related commands

reset ip fast-forwarding cache

display ip fast-forwarding fragcache

Use display ip fast-forwarding fragcache to display fast forwarding table information for fragmented packets.

Syntax

display ip fast-forwarding fragcache [ ip-address ] [ slot slot-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

ip-address: Specifies an IP address. If you do not specify this argument, this command displays fast forwarding entries for all fragmented packets.

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify this option, the command displays fast forwarding entries for the fragmented packets on all member devices.

Usage guidelines

This command displays fast forwarding entries for fragmented packets. Each entry includes the source IP address, source port number, destination IP address, destination port number, protocol number, input interface, and fragment ID.

Examples

# Display fast forwarding table information about all fragmented packets.

<Sysname> display ip fast-forwarding fragcache

Total number of fragment fast-forwarding entries: 2

SIP             SPort DIP             DPort Pro Input_If    ID

7.0.0.13        68    8.0.0.1         67    17  InLoop0     2

8.0.0.1         67    7.0.0.13        68    17  M-GE0/0/0   3

Table 2 Command output

Field	Description
SIP	Source IP address.
SPort	Source port number.
DIP	Destination IP address.
DPort	Destination port number.
Pro	Protocol number.
Input_If	Input interface type and number. If no interface is involved in fast forwarding, this field displays N/A. If the input interface does not exist, this field displays a hyphen (-).
ID	Fragment ID.

 

Related commands

reset ip fast-forwarding cache

ip fast-forwarding aging-time

Use ip fast-forwarding aging-time to configure the aging time of fast forwarding entries.

Use undo ip fast-forwarding aging-time to restore the default.

Syntax

ip fast-forwarding aging-time aging-time

undo ip fast-forwarding aging-time

Default

The aging time of fast forwarding entries is 30 seconds.

Views

System view

Predefined user roles

network-admin

Parameters

aging-time: Specifies the aging time for fast forwarding entries, in the range of 10 to 300 seconds.

Examples

# Set the aging time of fast forwarding entries to 20 seconds.

<Sysname> system-view

[Sysname] ip fast-forwarding aging-time 20

Related commands

display ip fast-forwarding aging-time

ip fast-forwarding load-sharing

Use ip fast-forwarding load-sharing to enable fast-forwarding load sharing.

Use undo ip fast-forwarding load-sharing to disable fast-forwarding load sharing.

Syntax

ip fast-forwarding load-sharing

undo ip fast-forwarding load-sharing

Default

Fast-forwarding load sharing is enabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

Fast-forwarding load sharing enables the device to identify a data flow by using the five-tuple (source IP, source port, destination IP, destination port, and protocol). The device then forwards packets of the same flow to implement load sharing.

If fast-forwarding load sharing is disabled, the device identifies a data flow by the five-tuple and the input interface. No load sharing is implemented.

Examples

# Enable fast-forwarding load sharing.

<Sysname> system-Views

[Sysname] ip fast-forwarding load-sharing

reset ip fast-forwarding cache

Use reset ip fast-forwarding cache to clear fast forwarding table information.

Syntax

reset ip fast-forwarding cache [ slot slot-number ]

Views

User view

Predefined use roles

network-admin

Parameters

slot slot-number: Specifies an IRF member device by its member ID. If you do not specify this option, the command clears fast forwarding table information on all IRF member devices.

Examples

# Clear fast forwarding table information.

<Sysname> reset ip fast-forwarding cache

Related commands

·     display ip fast-forwarding cache

·     display ip fast-forwarding fragcache