Example for Configuring Link Aggregation in Manual Mode

Networking Requirements

In Figure 1, SwitchA and SwitchB connect to devices in VLAN 10 and VLAN 20 through Ethernet links, and heavy traffic is transmitted between SwitchA and SwitchB.

SwitchA and SwitchB can provide higher link bandwidth to implement inter-VLAN communication. Data transmission and link reliability need to be ensured.

Figure 1 Link aggregation in manual mode

Configuration Roadmap

The configuration roadmap is as follows:

Create an Eth-Trunk and add member interfaces to the Eth-Trunk to increase link bandwidth.
Create VLANs and add interfaces to the VLANs.
Configure a load balancing mode to ensure that traffic is load balanced among Eth-Trunk member interfaces.

Procedure

Create an Eth-Trunk on SwitchA and SwitchB, and add member interfaces to the Eth-Trunk.

<HUAWEI> system-view
[HUAWEI] sysname SwitchA
[SwitchA] interface eth-trunk 1
[SwitchA-Eth-Trunk1] trunkport gigabitethernet 0/0/1 to 0/0/3
[SwitchA-Eth-Trunk1] quit

<HUAWEI> system-view
[HUAWEI] sysname SwitchB
[SwitchB] interface eth-trunk 1
[SwitchB-Eth-Trunk1] trunkport gigabitethernet 0/0/1 to 0/0/3
[SwitchB-Eth-Trunk1] quit

Create VLANs and add interfaces to the VLANs.

# Create VLAN 10 and VLAN 20 and add interfaces to them. The configuration of SwitchB is similar to the configuration of SwitchA, and is not mentioned here.

[SwitchA] vlan batch 10 20
[SwitchA] interface gigabitethernet 0/0/4
[SwitchA-GigabitEthernet0/0/4] port link-type trunk
[SwitchA-GigabitEthernet0/0/4] port trunk allow-pass vlan 10
[SwitchA-GigabitEthernet0/0/4] quit
[SwitchA] interface gigabitethernet 0/0/5
[SwitchA-GigabitEthernet0/0/5] port link-type trunk
[SwitchA-GigabitEthernet0/0/5] port trunk allow-pass vlan 20
[SwitchA-GigabitEthernet0/0/5] quit

# Configure Eth-Trunk 1 to allow packets from VLAN 10 and VLAN 20 to pass through. The configuration of SwitchB is similar to the configuration of SwitchA, and is not mentioned here.

[SwitchA] interface eth-trunk 1
[SwitchA-Eth-Trunk1] port link-type trunk
[SwitchA-Eth-Trunk1] port trunk allow-pass vlan 10 20
[SwitchA-Eth-Trunk1] quit

Configure a load balancing mode for Eth-Trunk 1. The configuration of SwitchB is similar to the configuration of SwitchA, and is not mentioned here.
```
[SwitchA] interface eth-trunk 1
[SwitchA-Eth-Trunk1] load-balance src-dst-mac
[SwitchA-Eth-Trunk1] quit
```

Verify the configuration.

Run the display eth-trunk 1 command in any view to check whether the Eth-Trunk is created and whether member interfaces are added.

[SwitchA] display eth-trunk 1
Eth-Trunk1's state information is: 
WorkingMode: NORMAL           Hash arithmetic: According to SA-XOR-DA
Least Active-linknumber: 1     Max Bandwidth-affected-linknumber: 8
Operate status: up             Number Of Up Port In Trunk: 3 
--------------------------------------------------------------------------------
PortName                           Status       Weight
GigabitEthernet0/0/1               Up           1
GigabitEthernet0/0/2               Up           1
GigabitEthernet0/0/3               Up           1

The preceding command output shows that Eth-Trunk 1 has three member interfaces: GigabitEthernet0/0/1, GigabitEthernet0/0/2, and GigabitEthernet0/0/3. The member interfaces are all in Up state. The Operate status of Eth-Trunk 1 is Up.

Configuration Files

SwitchA configuration file

#
sysname SwitchA
#
vlan batch 10 20
#
interface Eth-Trunk1
 port link-type trunk 
 port trunk allow-pass vlan 10 20
 load-balance src-dst-mac 
# 
interface GigabitEthernet0/0/1 
 eth-trunk 1
# 
interface GigabitEthernet0/0/2 
 eth-trunk 1
# 
interface GigabitEthernet0/0/3 
 eth-trunk 1
#
interface GigabitEthernet0/0/4 
 port link-type trunk 
 port trunk allow-pass vlan 10
#
interface GigabitEthernet0/0/5 
 port link-type trunk 
 port trunk allow-pass vlan 20
#
return

SwitchB configuration file

#
sysname SwitchB
#
vlan batch 10 20
#
interface Eth-Trunk1
 port link-type trunk 
 port trunk allow-pass vlan 10 20
 load-balance src-dst-mac 
# 
interface GigabitEthernet0/0/1 
 eth-trunk 1
# 
interface GigabitEthernet0/0/2 
 eth-trunk 1
# 
interface GigabitEthernet0/0/3 
 eth-trunk 1
#
interface GigabitEthernet0/0/4 
 port link-type trunk 
 port trunk allow-pass vlan 10
#
interface GigabitEthernet0/0/5 
 port link-type trunk 
 port trunk allow-pass vlan 20
#
return