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- Table of Contents
-
- 07-Layer 3—IP Services Command References
- 00-Preface
- 01-ARP commands
- 02-IP addressing commands
- 03-DHCP commands
- 04-DNS commands
- 05-NAT commands
- 06-NAT66 commands
- 07-IP forwarding basics commands
- 08-Fast forwarding commands
- 09-Multi-CPU packet distribution commands
- 10-Adjacency table commands
- 11-IRDP commands
- 12-IP performance optimization commands
- 13-UDP helper commands
- 14-IPv6 basics commands
- 15-DHCPv6 commands
- 16-IPv6 fast forwarding commands
- 17-AFT commands
- 18-Tunneling commands
- 19-GRE commands
- 20-ADVPN commands
- 21-WAAS commands
- 22-Lighttpd service commands
- 23-Web caching commands
- 24-STUN commands
- Related Documents
-
| Title | Size | Download |
|---|---|---|
| 07-IP forwarding basics commands | 100.16 KB |
Basic IP forwarding commands
display fib
Use display fib to display FIB entries.
Syntax
display fib [ topology topology-name | vpn-instance vpn-instance-name ] [ ip-address [ mask | mask-length ] ]
Views
Any view
Predefined user roles
network-admin
network-operator
Parameters
topology topology-name: Specifies a topology by its name, a case-sensitive string of 1 to 31 characters. To specify a public topology, use base as the topology name. To display FIB entries for the public network, do not specify this option. The following compatibility matrixes show the support of hardware platforms for this option:
|
Hardware |
Parameter compatibility |
|
Yes |
|
|
MSR810, MSR810-W, MSR810-W-DB, MSR810-LM, MSR810-W-LM, MSR810-10-PoE, MSR810-LM-HK, MSR810-W-LM-HK, MSR810-LM-CNDE-SJK, MSR810-CNDE-SJK, MSR810-EI, MSR810-LM-EA, MSR810-LM-EI |
Yes |
|
MSR810-LMS, MSR810-LUS |
No |
|
MSR810-SI, MSR810-LM-SI |
No |
|
MSR810-LMS-EA, MSR810-LME |
Yes |
|
MSR1004S-5G, MSR1004S-5G-CN |
Yes |
|
MSR1104S-W, MSR1104S-W-CAT6, MSR1104S-5G-CN, MSR1104S-W-5G-CN |
Yes |
|
MSR2600-6-X1, MSR2600-15-X1, MSR2600-15-X1-T |
Yes |
|
MSR2600-10-X1 |
Yes |
|
MSR 2630 |
|
|
MSR3600-28, MSR3600-51 |
Yes |
|
MSR3600-28-SI, MSR3600-51-SI |
No |
|
MSR3600-28-X1, MSR3600-28-X1-DP, MSR3600-51-X1, MSR3600-51-X1-DP |
Yes |
|
MSR3600-28-G-DP, MSR3600-51-G-DP |
Yes |
|
MSR3610-I-DP, MSR3610-IE-DP, MSR3610-IE-ES, MSR3610-IE-EAD, MSR-EAD-AK770, MSR3610-I-IG, MSR3610-IE-IG |
Yes |
|
MSR3610-X1, MSR3610-X1-DP, MSR3610-X1-DC, MSR3610-X1-DP-DC, MSR3620-X1, MSR3640-X1 |
Yes |
|
MSR3610, MSR3620, MSR3620-DP, MSR3640, MSR3660 |
Yes |
|
MSR3610-G, MSR3620-G |
|
|
MSR3640-G |
Yes |
|
MSR3640-X1-HI |
Yes |
|
Hardware |
Parameter compatibility |
|
MSR810-W-WiNet, MSR810-LM-WiNet |
Yes |
|
MSR830-4LM-WiNet |
Yes |
|
MSR830-5BEI-WiNet, MSR830-6EI-WiNet, MSR830-10BEI-WiNet |
Yes |
|
Yes |
|
|
MSR2600-6-WiNet |
Yes |
|
Yes |
|
|
MSR2630-WiNet |
Yes |
|
MSR3600-28-WiNet |
Yes |
|
MSR3610-X1-WiNet |
Yes |
|
MSR3610-WiNet, MSR3620-10-WiNet, MSR3620-DP-WiNet, MSR3620-WiNet, MSR3660-WiNet |
Yes |
|
Hardware |
Parameter compatibility |
|
Yes |
|
|
MSR860-6HI-XS |
Yes |
|
MSR2630-XS |
Yes |
|
MSR3600-28-XS |
Yes |
|
MSR3610-XS |
Yes |
|
MSR3620-XS |
Yes |
|
Yes |
|
|
MSR3610-IE-XS |
Yes |
|
MSR3620-X1-XS |
Yes |
|
MSR3640-XS |
Yes |
|
MSR3660-XS |
Yes |
|
Hardware |
Parameter compatibility |
|
MSR810-LM-GL |
Yes |
|
MSR810-W-LM-GL |
Yes |
|
MSR830-6EI-GL |
Yes |
|
MSR830-10EI-GL |
Yes |
|
MSR830-6HI-GL |
Yes |
|
MSR830-10HI-GL |
Yes |
|
MSR1004S-5G-GL |
Yes |
|
MSR2600-6-X1-GL |
Yes |
|
MSR3600-28-SI-GL |
No |
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.
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 FIB entries for topology mt.
<Sysname> display fib topology mt
Route destination count: 8
Directly-connected host count: 0
Flag:
U:Useable 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
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
127.255.255.255/32 127.0.0.1 UH InLoop0 Null
224.0.0.0/4 0.0.0.0 UB NULL0 Null
224.0.0.0/24 0.0.0.0 UB NULL0 Null
255.255.255.255/32 127.0.0.1 UH InLoop0 Null
# Display all FIB entries of the public network.
<Sysname> display fib
Route destination count: 5
Directly-connected host count: 0
Flag:
U:Useable 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 M-GE0/0/0 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:Useable 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 M-GE0/0/0 Null
20.20.20.0/32 20.20.20.25 UBH M-GE0/0/0 Null
20.20.20.25/32 127.0.0.1 UH InLoop0 Null
20.20.20.25/32 20.20.20.25 H M-GE0/0/0 Null
20.20.20.255/32 20.20.20.25 UBH M-GE0/0/0 Null
# Display the FIB entries matching the destination IP address 10.2.1.1.
<Sysname> display fib 10.2.1.1
Route destination count: 1
Directly-connected host count: 1
Flag:
U:Useable 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 |
Total number of route destination addresses. |
|
Directly-connected host count |
Number of directly-connected hosts that are learned through features such as ARP. |
|
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. |
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
The following compatibility matrixes show the support of hardware platforms for this command:
|
Hardware |
Command compatibility |
|
MSR610 |
Yes |
|
MSR810, MSR810-W, MSR810-W-DB, MSR810-LM, MSR810-W-LM, MSR810-10-PoE, MSR810-LM-HK, MSR810-W-LM-HK, MSR810-LM-CNDE-SJK, MSR810-CNDE-SJK, MSR810-EI, MSR810-LM-EA, MSR810-LM-EI |
Yes |
|
MSR810-LMS, MSR810-LUS |
Yes |
|
MSR810-SI, MSR810-LM-SI |
Yes |
|
MSR810-LMS-EA, MSR810-LME |
Yes |
|
MSR1004S-5G, MSR1004S-5G-CN |
Yes |
|
MSR1104S-W, MSR1104S-W-CAT6, MSR1104S-5G-CN, MSR1104S-W-5G-CN |
Yes |
|
Yes |
|
|
MSR2600-10-X1 |
Yes |
|
MSR 2630 |
Yes |
|
MSR3600-28, MSR3600-51 |
Yes |
|
MSR3600-28-SI, MSR3600-51-SI |
Yes |
|
MSR3600-28-X1, MSR3600-28-X1-DP, MSR3600-51-X1, MSR3600-51-X1-DP |
Yes |
|
MSR3600-28-G-DP, MSR3600-51-G-DP |
No |
|
MSR3610-I-DP, MSR3610-IE-DP, MSR3610-IE-ES, MSR3610-IE-EAD, MSR-EAD-AK770, MSR3610-I-IG, MSR3610-IE-IG |
Yes |
|
MSR3610-X1, MSR3610-X1-DP, MSR3610-X1-DC, MSR3610-X1-DP-DC, MSR3620-X1, MSR3640-X1 |
Yes |
|
MSR3610, MSR3620, MSR3620-DP, MSR3640, MSR3660 |
Yes |
|
MSR3610-G, MSR3620-G |
Yes |
|
MSR3640-G |
Yes |
|
MSR3640-X1-HI |
Yes |
|
Hardware |
Command compatibility |
|
MSR810-W-WiNet, MSR810-LM-WiNet |
Yes |
|
MSR830-4LM-WiNet |
Yes |
|
MSR830-5BEI-WiNet, MSR830-6EI-WiNet, MSR830-10BEI-WiNet |
Yes |
|
MSR830-6BHI-WiNet, MSR830-10BHI-WiNet |
Yes |
|
MSR2600-6-WiNet |
Yes |
|
MSR2600-10-X1-WiNet |
Yes |
|
MSR2630-WiNet |
Yes |
|
MSR3600-28-WiNet |
Yes |
|
MSR3610-X1-WiNet |
Yes |
|
MSR3610-WiNet, MSR3620-10-WiNet, MSR3620-DP-WiNet, MSR3620-WiNet, MSR3660-WiNet |
Yes |
|
Hardware |
Command compatibility |
|
MSR860-6EI-XS |
Yes |
|
MSR860-6HI-XS |
Yes |
|
MSR2630-XS |
Yes |
|
MSR3600-28-XS |
Yes |
|
MSR3610-XS |
Yes |
|
MSR3620-XS |
Yes |
|
MSR3610-I-XS |
Yes |
|
MSR3610-IE-XS |
Yes |
|
MSR3620-X1-XS |
Yes |
|
MSR3640-XS |
Yes |
|
MSR3660-XS |
Yes |
|
Hardware |
Command compatibility |
|
MSR810-LM-GL |
Yes |
|
MSR810-W-LM-GL |
Yes |
|
MSR830-6EI-GL |
Yes |
|
MSR830-10EI-GL |
Yes |
|
MSR830-6HI-GL |
Yes |
|
MSR830-10HI-GL |
Yes |
|
MSR1004S-5G-GL |
Yes |
|
MSR2600-6-X1-GL |
Yes |
|
MSR3600-28-SI-GL |
Yes |
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 resolve this issue, 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 GigabitEthernet 1/0/1 that has no IPv4 address configured.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] ip forwarding
last-hop backup enable
Use last-hop backup enable to enable last hop backup.
Use undo last-hop backup enable to disable last hop backup.
Syntax
last-hop backup enable
undo last-hop backup enable
The following compatibility matrixes show the support of hardware platforms for this command:
|
Hardware |
Command compatibility |
|
MSR610 |
Yes |
|
MSR810, MSR810-W, MSR810-W-DB, MSR810-LM, MSR810-W-LM, MSR810-10-PoE, MSR810-LM-HK, MSR810-W-LM-HK, MSR810-LM-CNDE-SJK, MSR810-CNDE-SJK, MSR810-EI, MSR810-LM-EA, MSR810-LM-EI |
Yes |
|
MSR810-LMS, MSR810-LUS |
Yes |
|
MSR810-SI, MSR810-LM-SI |
No |
|
MSR810-LMS-EA, MSR810-LME |
Yes |
|
MSR1004S-5G, MSR1004S-5G-CN |
Yes |
|
MSR1104S-W, MSR1104S-W-CAT6, MSR1104S-5G-CN, MSR1104S-W-5G-CN |
Yes |
|
MSR2600-6-X1, MSR2600-15-X1, MSR2600-15-X1-T |
Yes |
|
MSR2600-10-X1 |
Yes |
|
MSR 2630 |
Yes |
|
MSR3600-28, MSR3600-51 |
Yes |
|
MSR3600-28-SI, MSR3600-51-SI |
Yes |
|
MSR3600-28-X1, MSR3600-28-X1-DP, MSR3600-51-X1, MSR3600-51-X1-DP |
Yes |
|
MSR3600-28-G-DP, MSR3600-51-G-DP |
Yes |
|
MSR3610-I-DP, MSR3610-IE-DP, MSR3610-IE-ES, MSR3610-IE-EAD, MSR-EAD-AK770, MSR3610-I-IG, MSR3610-IE-IG |
Yes |
|
MSR3610-X1, MSR3610-X1-DP, MSR3610-X1-DC, MSR3610-X1-DP-DC, MSR3620-X1, MSR3640-X1 |
Yes |
|
MSR3610, MSR3620, MSR3620-DP, MSR3640, MSR3660 |
Yes |
|
MSR3610-G, MSR3620-G |
Yes |
|
MSR3640-G |
Yes |
|
MSR3640-X1-HI |
Yes |
|
Hardware |
Command compatibility |
|
MSR810-W-WiNet, MSR810-LM-WiNet |
Yes |
|
MSR830-4LM-WiNet |
Yes |
|
MSR830-5BEI-WiNet, MSR830-6EI-WiNet, MSR830-10BEI-WiNet |
Yes |
|
MSR830-6BHI-WiNet, MSR830-10BHI-WiNet |
Yes |
|
MSR2600-6-WiNet |
Yes |
|
MSR2600-10-X1-WiNet |
Yes |
|
MSR2630-WiNet |
Yes |
|
MSR3600-28-WiNet |
Yes |
|
MSR3610-X1-WiNet |
Yes |
|
MSR3610-WiNet, MSR3620-10-WiNet, MSR3620-DP-WiNet, MSR3620-WiNet, MSR3660-WiNet |
Yes |
|
Hardware |
Command compatibility |
|
MSR860-6EI-XS |
Yes |
|
MSR860-6HI-XS |
Yes |
|
MSR2630-XS |
Yes |
|
MSR3600-28-XS |
Yes |
|
MSR3610-XS |
Yes |
|
MSR3620-XS |
Yes |
|
MSR3610-I-XS |
Yes |
|
MSR3610-IE-XS |
Yes |
|
MSR3620-X1-XS |
Yes |
|
MSR3640-XS |
Yes |
|
MSR3660-XS |
Yes |
|
Hardware |
Command compatibility |
|
MSR810-LM-GL |
Yes |
|
MSR810-W-LM-GL |
Yes |
|
MSR830-6EI-GL |
Yes |
|
MSR830-10EI-GL |
Yes |
|
MSR830-6HI-GL |
Yes |
|
MSR830-10HI-GL |
Yes |
|
MSR1004S-5G-GL |
Yes |
|
MSR2600-6-X1-GL |
Yes |
|
MSR3600-28-SI-GL |
Yes |
Default
Last hop backup is enabled.
Views
System view
Predefined user roles
network-admin
Usage guidelines
This feature enables the system to transmit the forward flow and return flow between the local device and a peer device over the same path.
In an IRF fabric enabled with this feature, the IRF master device performs the following operations when receiving the first IP packet of a forward flow on an interface enabled with last hop holding:
1. Saves the last hop information of the packet.
2. Synchronizes the last hop information to subordinate devices in the IRF fabric.
The last hop information can be used for guiding the return flow when the flow arrives at the master device or is forwarded through a subordinate device.
For this feature to takes effect, you must also enable last hop holding on the master device in the IRF fabric.
This command takes effect only when the session synchronization is enabled by using the session synchronization enable command. For more information about the session synchronization enable command, see Security Command Reference.
This feature is also applicable to multi-module devices enabled with service backup. If this feature is enabled on such a device, a device module performs the following operations when receiving the first IP packet of a forward flow on an interface enabled with last hop holding:
1. Saves the last hop information of the packet.
2. Synchronizes the last hop information to other modules in the device.
The last hop information can be used for guiding the backward flow when the flow arrives at one of these modules.
For this feature to take effect on a multi-module device, you must also enable session flow redirection by using the session flow-redirect enable command. For more information about the session flow-redirect enable command, see Security Command Reference.
Examples
# Disable last hop backup.
<Sysname> system-view
[Sysname] undo ip last-hop backup enable
Related commands
ip last-hop hold
session synchronization enable (Security Command Reference)
session flow-redirect enable (Security Command Reference)
ip last-hop hold
Use ip last-hop hold to enable last hop holding.
Use undo ip last-hop hold to disable last hop holding.
Syntax
ip last-hop hold
undo ip last-hop hold
Default
Last hop holding is disabled.
Views
Layer 3 Ethernet interface view
Layer 3 Ethernet subinterface view
Dialer interface view
Eth-channel interface view
Serial interface view
Predefined user roles
network-admin
Usage guidelines
Last hop holding implements symmetric routing.
When the interface enabled with this feature receives the first IP packet of a forward flow, this feature implements the following operations:
· Obtains the forward flow information and last hop information of the packet.
· Based on the obtained information, creates a fast forwarding entry for the return flow.
When packets of the return flow arrive at the device, the device forwards those packets according to the fast forwarding entry.
Last hop holding relies on fast forwarding entries. If the MAC address of a last hop changes on an Ethernet link, this feature can function correctly only after the fast forwarding entry is updated for the MAC address.
This command is not applicable to an MPLS network.
Examples
# Enable the last hop holding feature.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] ip last-hop hold
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
The following compatibility matrixes show the support of hardware platforms for this command:
|
Hardware |
Command compatibility |
|
MSR610 |
No |
|
MSR810, MSR810-W, MSR810-W-DB, MSR810-LM, MSR810-W-LM, MSR810-10-PoE, MSR810-LM-HK, MSR810-W-LM-HK, MSR810-LM-CNDE-SJK, MSR810-CNDE-SJK, MSR810-EI, MSR810-LM-EA, MSR810-LM-EI |
Yes |
|
MSR810-LMS, MSR810-LUS |
Yes |
|
MSR810-SI, MSR810-LM-SI |
Yes |
|
MSR810-LMS-EA, MSR810-LME |
Yes |
|
MSR1004S-5G, MSR1004S-5G-CN |
Yes |
|
MSR1104S-W, MSR1104S-W-CAT6, MSR1104S-5G-CN, MSR1104S-W-5G-CN |
Yes |
|
MSR2600-6-X1, MSR2600-15-X1, MSR2600-15-X1-T |
Yes |
|
MSR2600-10-X1 |
Yes |
|
MSR 2630 |
Yes |
|
MSR3600-28, MSR3600-51 |
Yes |
|
MSR3600-28-SI, MSR3600-51-SI |
Yes |
|
MSR3600-28-X1, MSR3600-28-X1-DP, MSR3600-51-X1, MSR3600-51-X1-DP |
Yes |
|
MSR3600-28-G-DP, MSR3600-51-G-DP |
No |
|
MSR3610-I-DP, MSR3610-IE-DP, MSR3610-IE-ES, MSR3610-IE-EAD, MSR-EAD-AK770, MSR3610-I-IG, MSR3610-IE-IG |
Yes |
|
MSR3610-X1, MSR3610-X1-DP, MSR3610-X1-DC, MSR3610-X1-DP-DC, MSR3620-X1, MSR3640-X1 |
Yes |
|
MSR3610, MSR3620, MSR3620-DP, MSR3640, MSR3660 |
Yes |
|
MSR3610-G, MSR3620-G |
Yes |
|
MSR3640-G |
Yes |
|
MSR3640-X1-HI |
Yes |
|
Hardware |
Command compatibility |
|
MSR810-W-WiNet, MSR810-LM-WiNet |
Yes |
|
MSR830-4LM-WiNet |
Yes |
|
MSR830-5BEI-WiNet, MSR830-6EI-WiNet, MSR830-10BEI-WiNet |
Yes |
|
MSR830-6BHI-WiNet, MSR830-10BHI-WiNet |
Yes |
|
MSR2600-6-WiNet |
Yes |
|
MSR2600-10-X1-WiNet |
Yes |
|
MSR2630-WiNet |
Yes |
|
MSR3600-28-WiNet |
Yes |
|
MSR3610-X1-WiNet |
Yes |
|
MSR3610-WiNet, MSR3620-10-WiNet, MSR3620-DP-WiNet, MSR3620-WiNet, MSR3660-WiNet |
Yes |
|
Hardware |
Command compatibility |
|
MSR860-6EI-XS |
Yes |
|
MSR860-6HI-XS |
Yes |
|
MSR2630-XS |
Yes |
|
MSR3600-28-XS |
Yes |
|
MSR3610-XS |
Yes |
|
MSR3620-XS |
Yes |
|
MSR3610-I-XS |
Yes |
|
MSR3610-IE-XS |
Yes |
|
MSR3620-X1-XS |
Yes |
|
MSR3640-XS |
Yes |
|
MSR3660-XS |
Yes |
|
Hardware |
Command compatibility |
|
MSR810-LM-GL |
Yes |
|
MSR810-W-LM-GL |
Yes |
|
MSR830-6EI-GL |
Yes |
|
MSR830-10EI-GL |
Yes |
|
MSR830-6HI-GL |
Yes |
|
MSR830-10HI-GL |
Yes |
|
MSR1004S-5G-GL |
Yes |
|
MSR2600-6-X1-GL |
Yes |
|
MSR3600-28-SI-GL |
Yes |
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 GigabitEthernet 1/0/1 that has no IPv6 address configured.
<Sysname> system-view
[Sysname] interface gigabitethernet 1/0/1
[Sysname-GigabitEthernet1/0/1] ipv6 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.
Examples
# Enable IPv4 load sharing based on bandwidth.
<Sysname> system-view
[Sysname] bandwidth-based-sharing
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 [ dest-ip | dest-port | ip-pro | src-ip | src-port ] * | per-packet } global
undo ip load-sharing mode global
In IRF mode:
ip load-sharing mode { per-flow [ dest-ip | dest-port | ip-pro | src-ip | src-port ] * | per-packet } { global | slot slot-number }
undo ip load-sharing mode { global | slot slot-number }
Default
The device performs per-flow load sharing.
Views
System view
Predefined user roles
network-admin
Parameters
per-flow: Implements per-flow load sharing.
dest-ip: Identifies flows by destination IP address.
dest-port: Identifies flows by destination port.
ip-pro: Identifies flows by protocol number.
src-ip: Identifies flows by source IP address.
src-port: Identifies flows by source port.
global: Configures the load sharing mode globally.
per-packet: Implements per-packet load sharing.
slot slot-number: Specifies an IRF member device by its member ID. If you do not specify a member device, this command configures the load sharing mode for all member devices. (IRF mode)
Usage guidelines
The per-packet load sharing mode does not take effect in fast forwarding.
Examples
# (Standalone mode) Configure per-flow load sharing.
[Sysname] ip load-sharing mode per-flow global
# (IRF mode) Configure per-flow load sharing for slot 1.
<Sysname> system-view
[Sysname] ip load-sharing mode per-flow slot 1
