- Table of Contents
-
- 05-Network Connectivity
- 00-Preface
- 01-About the network connectivity configuration guide
- 02-ARP configuration
- 03-DHCP configuration
- 04-DHCPv6 configuration
- 05-GRE configuration
- 06-IGMP snooping configuration
- 07-IP addressing configuration
- 08-Basic IP routing configuration
- 09-IP performance optimization configuration
- 10-IP forwarding basics configuration
- 11-L2TP configuration
- 12-LLDP configuration
- 13-MAC address table configuration
- 14-NAT configuration
- 15-PPP configuration
- 16-MLD snooping configuration
- 17-VLAN configuration
- 18-VLAN termination configuration
- 19-Policy-based routing configuration
- 20-Port isolation configuration
- 21-Layer 2 forwarding configuration
- 22-Loop detection configuration
- 23-RIP configuration
- 24-RIPng configuration
- 25-IPv6 static routing configuration
- 26-IPv6 policy-based routing configuration
- 27-IPv6 basics configuration
- 28-Static routing configuration
- 29-Spanning tree configuration
- 30-Tunneling configuration
- 31-Ethernet link aggregation configuration
- 32-DNS configuration
- 33-Multicast overview
- 34-Modem management configuration
- 35-3G and 4G modem management configuration
- Related Documents
-
Title | Size | Download |
---|---|---|
10-IP forwarding basics configuration | 52.67 KB |
Contents
Configuring IP forwarding basic settings························································ 1
About FIB table······························································································································· 1
Display and maintenance commands for FIB table············································································ 1
Configuring load sharing··················································································· 3
About load sharing·························································································································· 3
Restrictions: Hardware compatibility with loading sharing··································································· 3
Configuring load sharing mode········································································································ 4
Configuring IP forwarding basic settings
About FIB table
A device uses the FIB table to make packet forwarding decisions.
A device selects optimal routes from the routing table, and puts them into the FIB table. Each FIB entry specifies the next hop IP address and output interface for packets destined for a specific subnet or host.
For more information about the routing table, see "Configuring basic IP routing."
Use the display fib command to display the FIB table. The following example displays the entire FIB table.
<Sysname> display fib
Destination count: 4 FIB entry count: 4
Flag:
U:Useable G:Gateway H:Host B:Blackhole D:Dynamic S:Static
R:Relay F:FRR
Destination/Mask Nexthop Flag OutInterface/Token Label
10.2.0.0/16 10.2.1.1 U GE1/0/1 Null
10.2.1.1/32 127.0.0.1 UH InLoop0 Null
127.0.0.0/8 127.0.0.1 U InLoop0 Null
127.0.0.1/32 127.0.0.1 UH InLoop0 Null
A FIB entry includes the following items:
· Destination—Destination IP address.
· Mask—Network mask. The mask and the destination address identify the destination network. A logical AND operation between the destination address and the network mask yields the address of the destination network. For example, if the destination address is 192.168.1.40 and the mask 255.255.255.0, the address of the destination network is 192.168.1.0. A network mask includes a certain number of consecutive 1s. It can be expressed in dotted decimal format or by the number of the 1s.
· Nexthop—IP address of the next hop.
· Flag—Route flag.
· OutInterface—Output interface.
· Token—MPLS Label Switched Path index number.
· Label—Inner label.
Display and maintenance commands for FIB table
Execute display commands in any view.
Task |
Command |
Display FIB entries. |
display fib [ ip-address [ mask | mask-length ] ] |
Configuring load sharing
About load sharing
If a routing protocol finds multiple equal-cost best routes to the same destination, the device forwards packets over the equal-cost routes to implement load sharing.
Restrictions: Hardware compatibility with loading sharing
Hardware series |
Model |
Product code |
Loading sharing compatibility |
WX1800H series |
WX1804H |
EWP-WX1804H-PWR-CN |
Yes |
WX2500H series |
WX2508H-PWR-LTE WX2510H WX2510H-F WX2540H WX2540H-F WX2560H |
EWP-WX2508H-PWR-LTE EWP-WX2510H-PWR EWP-WX2510H-F-PWR EWP-WX2540H EWP-WX2540H-F EWP-WX2560H |
Yes |
WX3000H series |
WX3010H WX3010H-X WX3010H-L WX3024H WX3024H-L WX3024H-F |
EWP-WX3010H EWP-WX3010H-X-PWR EWP-WX3010H-L-PWR EWP-WX3024H EWP-WX3024H-L-PWR EWP-WX3024H-F |
Yes: · WX3010H · WX3024H · WX3024H-F No: · WX3010H-X · WX3010H-L · WX3024H-L |
WX3500H series |
WX3508H WX3510H WX3520H WX3520H-F WX3540H |
EWP-WX3508H EWP-WX3510H EWP-WX3520H EWP-WX3520H-F EWP-WX3540H |
No |
WX5500E series |
WX5510E WX5540E |
EWP-WX5510E EWP-WX5540E |
No |
WX5500H series |
WX5540H WX5560H WX5580H |
EWP-WX5540H EWP-WX5560H EWP-WX5580H |
No |
Access controller modules |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
LSUM1WCME0 EWPXM1WCME0 LSQM1WCMX20 LSUM1WCMX20RT LSQM1WCMX40 LSUM1WCMX40RT EWPXM2WCMD0F EWPXM1MAC0F |
No |
Hardware series |
Model |
Product code |
Loading sharing compatibility |
WX1800H series |
WX1804H WX1810H WX1820H WX1840H |
EWP-WX1804H-PWR EWP-WX1810H-PWR EWP-WX1820H EWP-WX1840H-GL |
Yes |
WX3800H series |
WX3820H WX3840H |
EWP-WX3820H-GL EWP-WX3840H-GL |
No |
WX5800H series |
WX5860H |
EWP-WX5860H-GL |
No |
Configuring load sharing mode
About this task
In the per-flow load sharing mode, the device forwards flows over equal-cost routes. Packets of one flow travel along the same routes. You can configure the device to identify a flow based on the following criteria: source IP address, destination IP address, source port number, destination port number, and IP protocol number.
In the per-packet load sharing mode, the device forwards packets over equal-cost routes.
Procedure
1. Enter system view.
system-view
2. Configure load sharing.
ip load-sharing mode { per-flow [ dest-ip | dest-port | ip-pro | src-ip | src-port ] * | per-packet } global
By default, the device performs per-flow load sharing.