TP-Link T1500-28TC TL-SL2428 T1500-28TCUN V1 Configuration Guide - Page 134

Configuration Example, Network Requirements

Page 134 highlights

Configuring LAG 3 Configuration Example Configuration Example 3.1 Network Requirements As shown below, users and servers are connected to Switch A and Switch B, and heavy traffic is transmitted between the two switches. To achieve high speed and reliability of data transmission, users need to improve the bandwidth and redundancy of the link between the two switches. 3.2 Configuration Scheme LAG function can bundle multiple physical ports into one logical interface to increase bandwidth and improve reliability. In this case, we take LACP as an example. As shown below, you can bundle up to eight physical ports into one logical aggregation group to transmit data on the two switches, and respectively connect the ports of the groups. In addition, another one redundant link can be set as the backup. To avoid traffic bottleneck between the servers and Switch B, you also need to configure LAG on them to increase link bandwidth. Here we mainly introduce the LAG configuration between the two switches. Figure 3-1 Network Topology Hosts Switch A Fa1/0/1 ... Fa1/0/9 Fa1/0/1 Fa1/0/9 Switch B Servers The overview of the configuration is as follows: 1) Considering there are multiple devices on each end, configure the load-balancing algorithm as 'SRC MAC+DST MAC'. 2) Specify the system priority for the switches. Here we choose Switch A as the dominate device and specify a higher system priority for it. 3) Add ports 1/0/1-9 to the LAG and set the mode as LACP. 4) Specify a high port priority for ports 1/0/1-8 to set them as the active ports, and a low port priority for port 1/0/9 to set it as the backup port. When any of the active ports is down, the backup port will be enabled to transmit data. Demonstrated with T1500-28PCT, the following sections provide configuration procedure in two ways: using the GUI and using the CLI. Configuration Guide 113

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Configuring LAG
Configuration Example
Configuration Guide
113
3
Configuration Example
3.1
Network Requirements
As shown below, users and servers are connected to Switch A and Switch B, and heavy
traffic is transmitted between the two switches. To achieve high speed and reliability
of data transmission, users need to improve the bandwidth and redundancy of the link
between the two switches.
3.2
Configuration Scheme
LAG function can bundle multiple physical ports into one logical interface to increase
bandwidth and improve reliability. In this case, we take LACP as an example.
As shown below, you can bundle up to eight physical ports into one logical aggregation
group to transmit data on the two switches, and respectively connect the ports of the
groups. In addition, another one redundant link can be set as the backup. To avoid traffic
bottleneck between the servers and Switch B, you also need to configure LAG on them to
increase link bandwidth. Here we mainly introduce the LAG configuration between the two
switches.
Figure 3-1
Network Topology
Switch A
Switch B
Hosts
Fa1/0/1
Fa1/0/1
Fa1/0/9
.
.
.
Fa1/0/9
Servers
The overview of the configuration is as follows:
1) Considering there are multiple devices on each end, configure the load-balancing
algorithm as ‘SRC MAC+DST MAC’.
2)
Specify the system priority for the switches. Here we choose Switch A as the dominate
device and specify a higher system priority for it.
3)
Add ports 1/0/1-9 to the LAG and set the mode as LACP.
4)
Specify a high port priority for ports 1/0/1-8 to set them as the active ports, and a low
port priority for port 1/0/9 to set it as the backup port. When any of the active ports is
down, the backup port will be enabled to transmit data.
Demonstrated with T1500-28PCT, the following sections provide configuration procedure
in two ways: using the GUI and using the CLI.