SummaryHow need to change or verify speed / duplex / mtu settings
OverviewSpeed, duplex, or MTU size on the Exinda NIC's can be manually configured. This is good for troubleshooting purposes, or if the switchport or router port has a mismatched speed setting. Changing this to match the manual setting could resolve connection issues. Furthermore, this can assure that if a future problem might happen with a new device on the network, the hardcoded settings will still be on the Exinda side.
Set the speed / duplex to be the same as the device the Exinda is connected to. Running auto on both ends is most desireable however. Note that if the Speed is changed to 1000Mbps (1Gbps), even though it is 'hardcoded', due to the technical specifications of Gigabit speeds, it is still technically autonegotiating, but the Exinda is only advertising that it can do Gigabit speed (not 100Mbps or anything lower). This is because Gigabit speeds have a complexity that requires exact autonegotiation between the two sides (more than just the speed and duplex settings), so there is no possible 'hardcoding' on any device for Gigabit speed.
To change these settings the Exinda, navigate to: Configuration > System > Network, under the "NICs" tab: Under the interface menu, it will show you all the Exinda NICs in the device. You can change the speed, duplex, and MTU fields. The link status will show if the link is up, what speed and duplex it's running at. It will show if the link is down as well.
When changing any one of these settings, it is possible to see downtime ranging up to a minute depending on hardware, traffic on the link and load on the device. This is because changing these settings involves not only changing software level flags, but also changing some information on the driver and hardware level as well. The link might drop for a few moments, and the web UI might take some time to refresh after the initial change is made, but it should come back promptly.
This can also be done through the CLI with the following commands (from the 'configure' mode of en / conf t):
- interface [name] speed [speed]
- interface [name] duplex [full | half]
- interface [name] mtu [MTU]