15
Configuring a Layer 2 Ethernet interface
Setting speed options for autonegotiation on an Ethernet
interface
IMPORTANT:
•
This feature is available only for 100-Mbps or 1000-Mbps Layer 2 Ethernet interfaces that support
speed autonegotiation.
•
For a combo interface, only its copper combo port supports this feature.
The following matrix shows the feature and hardware compatibility:
Hardware Speed autonegotiation options compatibility
F5020/F5040 Yes
M9006/M9010/M9014 Yes
VFW1000 No
By default, speed autonegotiation enables an Ethernet interface to negotiate with its peer for the highest
speed that both ends support. You can narrow down the speed option list for negotiation.
Figure 3
Speed autonegotiation application scenario
As shown in
:
•
All interfaces on the device are operating in speed autonegotiation mode, with the highest speed
of 1000 Mbps.
•
GigabitEthernet 1/0/4 provides access to the Internet for the servers.
If the transmission rate of each server in the server cluster is 1000 Mbps, their total transmission rate
exceeds the capability of interface GigabitEthernet 1/0/4.
GE1/0
/1
GE1/0
/3