Configuring An Auto-Negotiation Transmission Rate - H3C S5120-SI Series Operation Manual

To do...
Enter system view
Create a manual port group and
enter manual port group view
Add Ethernet ports to the manual
port group

Configuring an Auto-negotiation Transmission Rate

Usually, the transmission rate on an Ethernet port is determined through negotiation with the peer end,
which can be any rate within the capacity range. With auto-negotiation rate configured, you can enable
the Ethernet port to negotiate only part of the transmission rates within its capacity.
Figure 1-1 An application diagram of auto-negotiation transmission rate
As shown in Figure
Server 3) is 1000 Mbps, and the transmission rate of GigabitEthernet 1/0/4, which provides access to
the external network for the server group, is 1000 Mbps too. If you do not specify an auto-negotiation
range, the transmission rate on GigabitEthernet 1/0/1, GigabitEthernet 1/0/2 and GigabitEthernet 1/0/3
through negotiation with the servers is 1000 Mbps, which may cause congestion on the egress interface
GigabitEthernet 1/0/4. To solve the problem, you can specify the auto-negotiation transmission rate on
GigabitEthernet 1/0/1, GigabitEthernet 1/0/2, and GigabitEthernet 1/0/3 to 100 Mbps.
Follow these steps to configure an auto-negotiation transmission rate:
To do...
Enter system view
Enter Ethernet port view
Configure the auto-negotiation
transmission rate range
system-view
port-group manual
port-group-name
group-member interface-list
1-1, the network card transmission rate of the server group (Server 1, Server 2, and
Use the command...
system-view
interface interface-type
interface-number
speed auto [ 10 | 100 | 1000 ] *
Use the command...
1-4
Remarks
—
Required
Required
Remarks
—
—
Optional