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For “Auto Negotiation” mode, the switch will disable port auto-negotiation
function when the auto function of port (in Port Configuration setting) is
disabled.
For “Auto Detect” mode, the switch will always keep port auto-negotiation
function ON but just modify its attribution if auto function of port (in Port
Configuration setting) is disabled.
For applications, you should select “Auto Detect” mode if the connected device
is auto-negotiation enabled. (For example, customer’s PC is auto-negotiation
enable and you want to set his network connection to work at 10Mbps.)
And you can select “Auto Negotiation” mode if the connected device is auto-
negotiation disabled (it is called forced mode, sometimes). Some old TX-FX
Converters needs to work in this mode because FX supports 100/Full forced
mode only. For most applications, “Auto Detect” mode is OK.
With “automode ?”, the sub-commands will be shown.
(config)# automode ?
detect Auto Detect mode
negotiation Auto Negotiation mode
automode detect command will set it to auto-detect mode.
automode negotiation command will set it to auto-negotiation mode.
8 default command
This command is used to restore factory default settings. Before start it, a
confirm message wil be prompted.
9 dhcp-relay command
This command is used to configure DHCP Relay Option 82 function.
Note
: The DHCP-Relay function here does not support relay between different
IP subnets. But it supports relay cross VLANs.
DHCP Relay function can relay DHCP requests to a specified DHCP server.
And Option 82 function will add the following information to DHCP request
packet.
1. Port number that DHCP request packet comes from
2. VLAN ID for this DHCP request
3. Mac address of the switch
4. A additional string as information. (*Adding the information string must be
enabled first.)
And DHCP server will assign IP configuration according to the information in
Option 82.
Note
: Not every DHCP server supports Option 82 function. If DHCP server
does not support it, please disable this DHCP Relay Option 82 function.
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