Contents

Basic IP forwarding commands· 1

display fib· 1

display fib count 3

fib log enable· 4

fib max-number 5

fib smooth· 6

fib switch-enhance· 7

ip forwarding· 7

ip forwarding-table save· 8

ipv6 forwarding· 9

snmp-agent trap enable fib· 9

snmp-agent trap enable ip-forwarding· 10

Load sharing commands· 11

bandwidth-based-sharing· 11

display ip load-sharing mode· 11

ip load-sharing mode· 13

 

Basic IP forwarding commands

display fib

Use display fib to display FIB entries.

Syntax

In standalone mode:

display fib | vpn-instance vpn-instance-name ] [ ip-address [ mask | mask-length ] ] [ slot slot-number ]

In IRF mode:

display fib | vpn-instance vpn-instance-name ] [ ip-address [ mask | mask-length ] ] [chassis chassis-number slot slot-number]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters. To display the FIB entries for the public network, do not specify any VPN instance.

ip-address: Displays the FIB entry that matches the specified destination IP address.

mask: Specifies the mask for the IP address.

mask-length: Specifies the mask length for the IP address. The value range is 0 to 32.

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command displays FIB entries 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 argument represents the slot number of the card. If you do not specify a card, this command displays FIB entries on all cards. (In IRF mode.)

Usage guidelines

If you specify an IP address without a mask or mask length, this command displays the longest matching FIB entry.

If you specify an IP address and a mask or mask length, this command displays the exactly matching FIB entry.

Examples

# Display all FIB entries of the public network.

<Sysname> display fib

 

Route destination count: 5

Directly-connected host count: 0

 

Flag:

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

  R:Relay     F:FRR

 

Destination/Mask   Nexthop         Flag     OutInterface/Token       Label

0.0.0.0/32         127.0.0.1       UH       InLoop0                  Null

1.1.1.0/24         192.168.126.1   USGF     MGE0/0/0                Null

127.0.0.0/8        127.0.0.1       U        InLoop0                  Null

127.0.0.0/32       127.0.0.1       UH       InLoop0                  Null

127.0.0.1/32       127.0.0.1       UH       InLoop0                  Null

# Display the FIB entries for VPN vpn1.

<Sysname> display fib vpn-instance vpn1

 

Route destination count: 6

Directly-connected host count: 0

 

Flag:

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

  R:Relay     F:FRR

 

Destination/Mask   Nexthop         Flag     OutInterface/Token      Label

0.0.0.0/32         127.0.0.1       UH       InLoop0                  Null

20.20.20.0/24      20.20.20.25     U        MGE0/0/0                Null

20.20.20.0/32      20.20.20.25     UBH      MGE0/0/0                Null

20.20.20.25/32     127.0.0.1       UH       InLoop0                  Null

20.20.20.255/32    20.20.20.25     UBH      MGE0/0/0                Null

20.20.20.255/32    2001::1         UBH      MGE0/0/0                Null

# Display the FIB entries matching the destination IP address 10.2.1.1.

<Sysname> display fib 10.2.1.1

 

FIB entry count: 1

 

Flag:

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

  R:Relay     F:FRR

 

Destination/Mask   Nexthop         Flag     OutInterface/Token       Label

10.2.1.1/32        127.0.0.1       UH       InLoop0                  Null

Table 1 Command output

Field	Description
Route destination count	Number of route destination addresses.
Directly-connected host count	Number of directly-connected hosts that are learned through features such as ARP.
FIB entry count	Total number of FIB entries.
Destination/Mask	Destination address and the mask length.
Nexthop	Next hop address.
Flag	Flags of routes: ·     U—Usable route. ·     G—Gateway route. ·     H—Host route. ·     B—Blackhole route. ·     D—Dynamic route. ·     S—Static route. ·     R—Relay route. ·     F—Fast reroute.
OutInterface/Token	Output interface/LSP index number.
Label	Inner label.

 

display fib count

Use display fib count to display FIB entry statistics.

Syntax

In standalone mode:

display fib count [ all | vpn-instance vpn-instance-name ] slot slot-number

In IRF mode:

display fib count [ all | vpn-instance vpn-instance-name ] chassis chassis-number slot slot-number

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

all: Displays FIB entry statistics for the public network and all VPN instances.

vpn-instance vpn-instance-name: Specifies an MPLS L3VPN instance by its name, a case-sensitive string of 1 to 31 characters.

slot slot-number: Specifies a card by its slot number. (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. (In IRF mode.)

Usage guidelines

If you do not specify the all or vpn-instance keyword, this command displays FIB entry statistics for the public network.

Examples

# Display FIB entry statistics for the public network and all VPN instances on slot 1. (In standalone mode.)

<Sysname> system-view

[Sysname] display fib count all slot 1

Total count: 3121

Route destination count: 6

Directly-connected host count: 0

VPN-Instance Name      Route destination count      Directly-connected host count

1                      100                          3

vpn1                   1000                         10

vpn2                   2000                         2

# Display FIB entry statistics for the public network on slot 1.

<Sysname> system-view

[Sysname] display fib count slot 1

Route destination count: 6

Directly-connected host count: 0

# Display FIB entry statistics for the public network and all VPN instances on slot 1. (In IRF mode.)

<Sysname> system-view

[Sysname] display fib count all chassis 1 slot 1

Total count: 3121

Route destination count: 6

Directly-connected host count: 0

VPN-Instance Name      Route destination count      Directly-connected host count

1                      100                          3

vpn1                   1000                         10

vpn2                   2000                         2

# Display FIB entry statistics for the public network on slot 1.

<Sysname> system-view

[Sysname] display fib count chassis 1 slot 1

Route destination count: 6

Directly-connected host count: 0

Table 2 Command output

Field	Description
Route destination count	Number of route destination addresses.
Directly-connected host count	Number of directly-connected hosts that are learned through features such as ARP.
Total count	Number of FIB entries.
VPN-Instance Name	VPN instance name.

‌

fib log enable

Use fib log enable to enable FIB logging.

Use undo fib log enable to disable FIB logging.

Syntax

fib log enable

undo fib log enable

Default

FIB logging is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

The logs are sent to the information center of the device. For the logs to be output correctly, you must also configure the information center on the device. For more information about information center configuration, see Network Management and Monitoring Configuration Guide.

To avoid memory consumption caused by log recording, you can use the undo fib log enable command to disable FIB logging.

Examples

# Enable FIB logging.

<Sysname> system-view

[Sysname] fib log enable

fib max-number

Use fib max-number to specify the maximum number of FIB entries on an interface module.

Use undo fib max-number to restore the default.

Syntax

In standalone mode:

fib max-number max-number slot slot-number

undo fib max-number

In IRF mode:

fib max-number max-number chassis chassis-number slot slot-number

undo fib max-number

Default

The maximum number of FIB entries on an interface module is the maximum number of FIB entries supported by the device.

Views

System view

Predefined user roles

network-admin

Parameters

max-number: Specifies the maximum number of IPv4 FIB entries on an interface module, in the range of 0 to 4294967295.

slot slot-number: Specifies an interface module by its slot number. (In standalone mode.)

chassis chassis-number slot slot-number: Specifies an interface module 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 interface module. (In IRF mode.)

Usage guidelines

To save memory resources, you can use this command to decrease the maximum number of FIB entries on an interface module.

If the value for the max-number argument exceeds the maximum number supported by the device, the configuration does not take effect on interface modules. The maximum number supported by the device is then applied to the interface modules.

If the number of FIB entries has reached max-number on an interface module, the module stops accepting new FIB entries issued by the MPU. The existing services on the module are not affected. If the MPU deletes some old FIB entries and notifies the interface module to delete the entries, the interface module can accept new FIB entries until the upper limit is reached again.

Examples

# Specify the maximum number of FIB entries on the interface module in slot 1 as 1000.

<Sysname> system-view

[Sysname] fib max-number 1000 slot 1

fib smooth

Use fib smooth to perform one-time FIB entry synchronization.

Syntax

In standalone mode:

fib smooth slot slot-number

In IRF mode:

fib smooth chassis chassis-number slot slot-number

Views

System view

Predefined user roles

network-admin

Parameters

slot slot-number: Specifies a card by its slot number. (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. (In IRF mode.)

Usage guidelines

Perform this task to synchronize FIB entries from the MPU to the specified interface module.

If the maximum number of IPv4 or IPv6 FIB entries (specified by using the fib max-number or ipv6 fib max-number command) is reached on the interface module, the module stops accepting new entries.

Examples

# Perform one-time FIB entry synchronization.

<Sysname> system-view

[Sysname] fib smooth slot 1

Related commands

fib max-number

ipv6 fib max-number

fib switch-enhance

Use fib switch-enhance to enable FIB route switching optimization.

Use undo fib switch-enhance to restore the default.

Syntax

fib switch-enhance

undo fib switch-enhance

Default

FIB route switching optimization is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

This feature is applicable to scenarios with high service traffic sustainability requirements. It enables the device to keep using the current route until the new route becomes available, instead of disconnecting the current route directly. This prevents packet loss caused by route switch, which might take hundreds of milliseconds.

The device can keep using the current route for a maximum of 10 seconds.

Examples

# Enable FIB route switching optimization.

<Sysname> system-view

[Sysname] fib switch-enhance

ip forwarding

Use ip forwarding to enable IPv4 packet forwarding on an interface that has no IPv4 address configured.

Use undo ip forwarding to disable IPv4 packet forwarding on an interface that has no IPv4 address configured.

Syntax

ip forwarding

undo ip forwarding

Default

If an interface has no IPv4 address configured, it cannot forward IPv4 packets.

Views

Interface view

Predefined user roles

network-admin

Usage guidelines

On a device that supports both IPv4 and IPv6, the next hop of an IPv4 packet might be an IPv4 address or an IPv6 address. If the output interface has no IPv4 address configured, the interface cannot forward the IPv4 packet. To solve this problem, execute this command on the interface. This feature allows the interface to forward IPv4 packets even though the interface has no IPv4 address configured.

Examples

# Enable IPv4 packet forwarding on Ten-GigabitEthernet 3/1/1 that has no IPv4 address configured.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 3/1/1

[Sysname-Ten-GigabitEthernet3/1/1] ip forwarding

# Enable IPv4 packet forwarding on VLAN-interface 1 that has no IPv4 address configured.

<Sysname> system-view

[Sysname] interface vlan-interface 1

[Sysname-Vlan-interface1] ip forwarding

ip forwarding-table save

Use ip forwarding-table save to save the IP forwarding entries to a file.

Syntax

ip forwarding-table save filename filename

Views

Any view

Predefined user roles

network-admin

Parameters

filename filename: Specifies the name of a file, a string of 1 to 255 characters. For information about the filename argument, see Fundamentals Configuration Guide.

Usage guidelines

The command automatically creates the file if you specify a nonexistent file. If the file already exists, this command overwrites the file content.

To automatically save the IP forwarding entries periodically, configure a schedule for the device to automatically run the ip forwarding-table save command. For information about scheduling a task, see Fundamentals Configuration Guide.

Examples

# Save the IP forwarding entries to the fib.txt file.

<Sysname> ip forwarding-table save filename fib.txt

ipv6 forwarding

Use ipv6 forwarding to enable IPv6 packet forwarding on an interface that has no IPv6 address configured.

Use undo ipv6 forwarding to disable IPv6 packet forwarding on an interface that has no IPv6 address configured.

Syntax

ipv6 forwarding

undo ipv6 forwarding

Default

If an interface has no IPv6 address configured, it cannot forward IPv6 packets.

Views

Interface view

Predefined user roles

network-admin

Usage guidelines

On a device that supports both IPv4 and IPv6, the next hop of an IPv6 packet might be an IPv4 address or an IPv6 address. If the output interface has no IPv6 address configured, the interface cannot forward the IPv6 packet. To solve this problem, execute this command on the interface. This feature allows the interface to forward IPv6 packets even though the interface has no IPv6 address configured.

Examples

# Enable IPv6 packet forwarding on Ten-GigabitEthernet 3/1/1 that has no IPv6 address configured.

<Sysname> system-view

[Sysname] interface ten-gigabitethernet 3/1/1

[Sysname-Ten-GigabitEthernet3/1/1] ipv6 forwarding

# Enable IPv6 packet forwarding on VLAN-interface 1 that has no IPv6 address configured.

<Sysname> system-view

[Sysname] interface vlan-interface 1

[Sysname-Vlan-interface1] ipv6 forwarding

snmp-agent trap enable fib

Use snmp-agent trap enable fib to enable SNMP notifications for FIB events.

Use undo snmp-agent trap enable fib to disable SNMP notifications for FIB events.

Syntax

snmp-agent trap enable fib

undo snmp-agent trap enable fib

Default

SNMP notifications for FIB events are enabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

This feature enables the FIB module to generate SNMP notifications for critical FIB events. The SNMP notifications are sent to the SNMP module. For the SNMP notifications to be sent correctly, you must also configure SNMP. For more information about SNMP configuration, see Network Management and Monitoring Configuration Guide.

Examples

# Disable SNMP notifications for FIB events.

<Sysname> system-view

[Sysname] undo snmp-agent trap enable fib

snmp-agent trap enable ip-forwarding

Use snmp-agent trap enable ip-forwarding to enable SNMP notifications for IP forwarding events.

Use undo snmp-agent trap enable ip-forwarding to disable SNMP notifications for IP forwarding events.

Syntax

snmp-agent trap enable ip-forwarding

undo snmp-agent trap enable ip-forwarding

Default

SNMP notifications for IP forwarding events are enabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

This feature enables the IP forwarding module to generate SNMP notifications for critical IP forwarding events. The SNMP notifications are sent to the SNMP module. For the SNMP notifications to be sent correctly, you must also configure SNMP. For more information about SNMP configuration, see Network Management and Monitoring Configuration Guide.

Examples

# Disable SNMP notifications for IP forwarding events.

<Sysname> system-view

[Sysname] undo snmp-agent trap enable ip-forwarding

 

Load sharing commands

bandwidth-based-sharing

Use bandwidth-based-sharing to enable IPv4 load sharing based on bandwidth.

Use undo bandwidth-based-sharing to disable IPv4 load sharing based on bandwidth.

Syntax

bandwidth-based-sharing

undo bandwidth-based-sharing

Default

The IPv4 load sharing based on bandwidth is disabled.

Views

System view

Predefined user roles

network-admin

Usage guidelines

This feature load shares flow traffic among multiple output interfaces based on their load percentages. The device calculates the load percentage for each output interface in terms of their expected bandwidths.

Devices that run load sharing protocols, such as Locator/ID Separation Protocol (LISP), implement load sharing based on the ratios defined by these protocols.

Only the incoming traffic on the following cards supports bandwidth-based IPv4 load sharing:

CSPEX-1304X, CSPEX-1404X, CSPEX-1502X, CSPEX-1504X, CSPEX-1504XA, CSPEX-1602X, CSPEX-1602XA, CSPEX-1804X, CSPEX-1512X, CSPEX-1612X, CSPEX-1812X, RX-SPE200, CEPC-XP4LX, CEPC-XP24LX, CEPC-XP48RX, EPC-CP4RX, CEPC-CP4RXA, CEPC-CP4RX-L, CSPEX-1802X, CSPEX-1802XA, CSPEX-1812X-E, CSPEX-2304X-G, CEPC-CQ8L, CEPC-CQ8LA, CEPC-CQ16L1, CSPEX-1502XA, RX-SPE200-E

Examples

# Enable IPv4 load sharing based on bandwidth.

<Sysname> system-view

[Sysname] bandwidth-based-sharing

display ip load-sharing mode

Use display ip load-sharing mode to display the load sharing mode in use.

Syntax

In standalone mode:

display ip load-sharing mode slot slot-number [ cpu cpu-number ]

In IRF mode:

display ip load-sharing mode chassis chassis-number slot slot-number [ cpu cpu-number ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command displays the load sharing mode 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 displays the load sharing mode for all cards. (In IRF mode.)

cpu cpu-number: Specifies a CPU by its number. This option is available only if multiple CPUs are available on the specified slot.

Examples

# Display the load sharing mode in use.

<Sysname> display ip load-sharing mode slot 1

Load-sharing mode: per-flow

Load-sharing options: dest-ip | src-ip | ip-pro | dest-port | src-port | dest-mac | src-mac | ingress-port

Load-sharing algorithm: 1

IP tunnel load-sharing mode: outer

Table 3 Command output

Field	Description
Load-sharing mode	The load sharing mode in use: ·     per-packet—Per-packet load sharing. ·     per-flow—Per-flow load sharing.
Load-sharing options	Options configured for load sharing: ·     dest-ip—Identifies flows by packet's destination IP address. ·     src-ip—Identifies flows by packet's source IP address. ·     ip-pro—Identifies flows by packet's IP protocol. ·     dest-port—Identifies flows by packet's destination port number. ·     src-port—Identifies flows by packet's source port number. ·     ingress-port—Identifies flows by packet's ingress port. ·     dest-mac—Identifies flows by packet's destination MAC address. ·     src-mac—Identifies flows by packet's source MAC address.
Load-sharing algorithm	Algorithm used by load sharing.
IP tunnel load-sharing mode	Load sharing for IP tunnel packets: ·     all—Identifies flows by inner and outer IP header information. ·     inner—Identifies flows by inner IP header information. ·     outer—Identifies flows by outer IP header information.

 

Related commands

ip load-sharing mode

ip load-sharing mode

Use ip load-sharing mode to configure the load sharing mode.

Use undo ip load-sharing mode to restore the default.

Syntax

In standalone mode:

ip load-sharing mode { per-flow [ algorithm algorithm-number |  | [ dest-ip | dest-mac | dest-port | ip-pro | src-ip | src-mac | src-port ] * |per-packet  } { global | slot slot-number [ cpu cpu-number ] }

undo ip load-sharing mode [ per-flow { algorithm } ] { global | slot slot-number [ cpu cpu-number ] }

In IRF mode:

ip load-sharing mode { per-flow [ algorithm algorithm-number | [ dest-ip | dest-mac | dest-port | ip-pro | src-ip | src-mac | src-port ] * | per-packet } { chassis chassis-number slot slot-number [ cpu cpu-number ] | global }

undo ip load-sharing mode [ per-flow { algorithm } ] { chassis chassis-number slot slot-number [ cpu cpu-number ] | global }

Default

The device implements per-flow load sharing.

·     For fragmented packets, the device uses the dest-ip and src-ip loading sharing modes.

·     For non-fragmented packets, the default load sharing modes vary by module model.

Table 4 shows the default load sharing modes used by the following cards:

CSPEX-1304X, CSPEX-1404X, CSPEX-1502X, CSPEX-1504X, CSPEX-1504XA, CSPEX-1602X, CSPEX-1602XA, CSPEX-1804X, CSPEX-1512X, CSPEX-1612X, CSPEX-1812X, RX-SPE200, CEPC-XP4LX, CEPC-XP24LX, CEPC-XP48RX, CEPC-CP4RX, CEPC-CP4RXA, CEPC-CP4RX-L

Table 4 Default load sharing modes

Packet type	Default load sharing modes
IP unicast packets	dest-ip, src-ip
IP multicast packets	dest-mac, src-mac
Layer 2 frames	dest-mac, src-mac
MPLS L3VPN packets	dest-ip, src-ip
MPLS L2VPN packets	·     IP packets: dest-ip, src-ip ·     Other packets: dest-mac, src-mac
MPLS LSPs	·     IP packets: mpls-label1, mpls-label2, dest-ip, src-ip ·     Other packets: mpls-label1, mpls-label2, dest-mac, src-mac
Other MPLS packets	mpls-label1, mpls-label2
IP tunnel packets	·     IP packets: inner dest-ip, inner src-ip ·     Non-termination MPLS packets: mpls-label1, mpls-label2

‌

Table 5 shows the default load sharing modes used by the following cards:

CSPEX-1802X, CSPEX-1802XA, CSPEX-1812X-E, CSPEX-2304X-G, CEPC-CQ8L, CEPC-CQ8LA, CEPC-CQ16L1, CSPEX-1502XA, RX-SPE200-E

Table 5 Default load sharing modes

Packet type	Default load sharing modes
IP unicast packets	dest-ip, src-ip, dest-port, src-port
IP multicast packets	dest-ip, src-ip, dest-port, src-port
Layer 2 frames	dest-mac, src-mac
MPLS L3VPN packets	dest-ip, src-ip, dest-port, src-port
MPLS L2VPN packets	·     IP packets: dest-ip, src-ip, dest-port, src-port ·     Other packets: dest-mac, src-mac
MPLS LSPs	·     IP packets: mpls-label1, mpls-label2, dest-ip, src-ip, dest-port, src-port ·     Other packets: mpls-label1, mpls-label2, dest-mac, src-mac
Other MPLS packets	mpls-label1, mpls-label2
IP tunnel packets	·     IP packets: inner dest-ip, inner src-ip, inner src-port, inner dest-port ·     Non-termination MPLS packets: mpls-label1, mpls-label2

‌

Table 6 shows the default load sharing modes used by the following cards:

CSPEX-1104-E, CSPEX-1204, CSPC-GE16XP4L-E, CSPC-GE24L-E, CSPC-GP24GE8XP2L-E

Table 6 Default load sharing modes

Packet type	Default load sharing modes
IP unicast packets	dest-ip, src-ip
IP multicast packets	dest-mac, src-mac
Layer 2 frames	dest-mac, src-mac
MPLS L3VPN packets	dest-ip, src-ip
MPLS L2VPN packets	·     IP packets: dest-ip, src-ip ·     MPLS VPLS packets: dest-mac, src-mac ·     MPLS L2VPN packets: mpls-label1, mpls-label2 ·     Other packets: dest-mac, src-mac
MPLS LSPs	mpls-label1, mpls-label2
Other MPLS packets	mpls-label1, mpls-label2
IP tunnel packets	·     IP packets: inner dest-ip, inner src-ip ·     Non-termination MPLS packets: mpls-label1, mpls-label2

‌

Views

System view

Predefined user roles

network-admin

Parameters

per-flow: Implements per-flow load sharing. If you specify none of the destination IP address, destination MAC address, destination port number, protocol number, source IP address, source MAC address, and source port number, the device performs per-flow load sharing based on the destination IP address and the source IP address of the packets.

algorithm algorithm-number: Specifies an algorithm for per-flow load sharing. The value range for the algorithm-number argument is 0 to 9. If you do not specify an algorithm, the default algorithm value is 0. If you specify an algorithm and then execute the undo ip load-sharing mode command, the algorithm value is set to 0.

dest-ip: Identifies flows by destination IP address.

dest-mac: Identifies flows by destination MAC address.

dest-port: Identifies flows by destination port.

global: Configures the load sharing mode globally.

ip-pro: Identifies flows by protocol number.

src-ip: Identifies flows by source IP address.

src-mac: Identifies flows by source MAC address.

src-port: Identifies flows by source port.

per-packet: Implements per-packet load sharing.

slot slot-number: Specifies a card by its slot number. If you do not specify a card, this command configures the load sharing mode 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 configures the load sharing mode for all cards. (In IRF mode.)

cpu cpu-number: Specifies a CPU by its number. This option is available only if multiple CPUs are available on the specified slot.

Restrictions and guidelines

Follow these guidelines when you use the ip load-sharing mode command to configure the load sharing mode on the following cards:

·     The configuration of per-packet load sharing does not take effect on the CSPEX-1104-E, CSPEX-1204, CSPC-GE16XP4L-E, CSPC-GE24L-E, and CSPC-GP24GE8XP2L-E cards.

·     The ip-pro keyword is not supported on the CSPEX-1304X, CSPEX-1404X, CSPEX-1502X, CSPEX-1504X, CSPEX-1504XA, CSPEX-1602X, CSPEX-1602XA, CSPEX-1804X, CSPEX-1512X, CSPEX-1612X, CSPEX-1812X, RX-SPE200, CEPC-XP4LX, CEPC-XP24LX, CEPC-XP48RX, CEPC-CP4RX, CEPC-CP4RXA, CEPC-CP4RX-L, CSPEX-1802X, CSPEX-1802XA, CSPEX-1812X-E, CSPEX-2304X-G, CEPC-CQ8L, CEPC-CQ8LA, CEPC-CQ16L1, CSPEX-1502XA, and RX-SPE200-E cards.

·     On the CSPEX-1304X, CSPEX-1404X, CSPEX-1502X, CSPEX-1504X, CSPEX-1504XA, CSPEX-1602X, CSPEX-1602XA, CSPEX-1804X, CSPEX-1512X, CSPEX-1612X, CSPEX-1812X, RX-SPE200, CEPC-XP4LX, CEPC-XP24LX, CEPC-XP48RX, CEPC-CP4RX, CEPC-CP4RXA, CEPC-CP4RX-L, CSPEX-1802XA, and CEPC-CQ8LA cards, the per-flow load sharing modes take effect on the specified card in the following order:

a.     Algorithm-based per-flow load sharing configured globally or on the card (specified by the algorithm algorithm-number option).

b.     Per-flow load sharing with a random combination of the dest-ip, dest-mac, dest-port, src-ip, src-mac, and src-port keywords on the specified card.

c.     Global per-flow load sharing with a random combination of the dest-ip, dest-mac, dest-port, src-ip, src-mac, and src-port keywords.

d.     Link-aggregation load sharing mode (configured by using the link-aggregation global load-sharing mode command). For more information, see Ethernet link aggregation configuration in Layer 2—LAN Switching Configuration Guide.

e.     Global default load sharing mode.

·     On the CSPEX-1802X, CSPEX-1812X-E, CEPC-CQ8L, CSPEX-1502XA, RX-SPE200-E, and CSPEX-2304X-G cards, the per-flow load sharing modes take effect on the specified card in the following order:

a.     Algorithm-based per-flow load sharing configured globally or on the card (specified by the algorithm algorithm-number option).

b.     Per-flow load sharing with a random combination of the dest-ip, dest-mac, dest-port, src-ip, src-mac, and src-port keywords on the specified card.

c.     Global per-flow load sharing with a random combination of the dest-ip, dest-mac, dest-port, src-ip, src-mac, and src-port keywords.

d.     Global default load sharing mode.

Examples

# (In standalone mode.) Configure per-packet load sharing on slot 1.

<Sysname> system-view

[Sysname] ip load-sharing mode per-packet slot 1

# (In standalone mode.) Configure per-flow load sharing by destination IP address and source IP address on slot 1.

<Sysname> system-view

[Sysname] ip load-sharing mode per-flow dest-ip src-ip slot 1

# (In standalone mode.) Specify algorithm 1 for per-flow load sharing on slot 1.

<Sysname> system-view

[Sysname] ip load-sharing mode per-flow algorithm 1 slot 1