05-Layer 3 - IP Services

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06-Fast forwarding commands
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06-Fast forwarding commands 42.40 KB

Fast forwarding commands

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

mdc-admin

mdc-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 entries.

Syntax

In standalone mode:

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

In IRF mode:

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

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

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

slot slot-number: Specifies a card by the slot number. If you do not specify a card, this command displays fast forwarding entries for all cards. (In standalone mode.)

chassis chassis-number slot slot-number: Specifies a card in an IRF member device. The chassis-number argument represents the member ID of the IRF member device. The slot-number represents the slot number of the card. If you do not specify a card, this command displays fast forwarding entries for all cards.(In IRF mode.)

Examples

# Display all fast forwarding entries.

<Sysname> display ip fast-forwarding cache

Total number of fast-forwarding entries: 1

SIP            SPort DIP            DPort Pro Input_If   Output_If   Flg

7.0.0.13       68    8.0.0.1        67    17  XGE1/0/3   XGE1/0/1     5

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 entries for fragmented packets.

Syntax

In standalone mode:

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

In IRF mode:

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

Views

Any view

Predefined user roles

network-admin

network-operator

mdc-admin

mdc-operator

Parameters

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

slot slot-number: Specifies a card by the slot number. If you do not specify a card, this command displays fast forwarding entries for fragmented packets on all cards. (In standalone mode.)

chassis chassis-number slot slot-number: Specifies a card on an IRF member device. The chassis-number argument represents the member ID of the IRF member device. The slot-number represents the slot number of the card. If you do not specify a card, this command displays fast forwarding entries for fragmented packets on all cards. (In IRF mode.)

Examples

# Display fast forwarding entries about all fragmented packets.

<Sysname> display ip fast-forwarding fragcache

Total number of fragment fast-forwarding entries: 1

SIP             SPort DIP             DPort Pro Input_If    ID

7.0.0.13        68    8.0.0.1         67    17  XGE1/0/3    2

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 for 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 is 30 seconds.

Views

System view

Predefined user roles

network-admin

mdc-admin

Parameters

aging-time: Specifies the aging time in the range of 10 to 300 seconds.

Examples

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

<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

mdc-admin

Usage guidelines

Fast forwarding load sharing enables the device to load share packets of the same flow. This feature identifies a data flow by using the packet information.

If fast forwarding load sharing is disabled, the device identifies a data flow by the packet information 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 the fast forwarding table.

Syntax

In standalone mode:

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

In IRF mode:

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

Views

User view

Predefined use roles

network-admin

mdc-admin

Parameters

slot slot-number: Specifies a card by the slot number. If you do not specify a card, this command clears the fast forwarding table for all cards. (In standalone mode.)

chassis chassis-number slot slot-number: Specifies a card on an IRF member device. The chassis-number argument represents the member ID of the IRF member device. The slot-number argument represents the slot number of the card. If you do not specify a card, this command clears the fast forwarding table for all cards. (In IRF mode.)

Examples

# Clear the fast forwarding table.

<Sysname> reset ip fast-forwarding cache

Related commands

display ip fast-forwarding cache

display ip fast-forwarding fragcache