-If you set a JumboFrame, it will be unable to transmit and receive the data of IEEE802.3 form.
-If you use two or more cards, or VLAN interfaces, enabling JumboFrame function becomes effective to all cards and all interfaces.
-When you perform file transfer by FTP, please set MTU size to less than 8232byte.
-Please use Jumbo Frames function only in 1000 Mbps communication. If you use Jumbo Frames in 10 Mbps or 100 Mbps, you won't be able to use the Jumbo Frame function.
4.3.2.3To use ndd(1M) Utility
By using the ndd command, mode of operation can be changed dynamically.
Below shows how to reference and set each parameter by ndd command with examples.
Reference:
ndd | (param: each parameter) |
example) # ndd
Settings:
ndd | (param: each parameter, value: each | ||
value) |
|
|
|
example1) # ndd | /dev/fjgi | 'instance' 2 | |
example2) # ndd | /dev/fjgi | 'adv_autoneg_cap' 0 | |
To reflect the changed setting:
ndd
(Set the relevant interface instance number.) ndd
(Once, turn off the function of AutoNegotiation.) ndd
(Then, turn on the function of AutoNegotiation.)
example) In case, to set the setting of fjgi0 1000Full => 100Half.
# ndd | /dev/fjgi | 'instance' 0 |
| |
# ndd | /dev/fjgi 'adv_1000fdx_cap' 0 | |||
# ndd | /dev/fjgi 'adv_1000hdx_cap' 0 | |||
# ndd | /dev/fjgi | 'adv_100fdx_cap' | 0 | |
# ndd | /dev/fjgi 'adv_autoneg_cap' 0 | |||
# ndd | /dev/fjgi | 'adv_autoneg_cap' | 1 | |
A list of parameter can be used with ndd command.
Table 4.2 A list of parametersParameter | Status |
| Meaning |
? | Read only | Display parameter list | |
link_status | Read only | 0 | : Link down |
|
| 1 | : Link up |
link_speed | Read only | 1000 : 1000Mbps | |
|
| 100 : 100Mbps | |
|
| 10 : 10Mbps | |
link_mode | Read only | 0 | : Half Duplex communication |
|
| 1 | : Full Duplex communication |
autonego | Read only | 0 | : Autonegotiation is Off. |
|
| 1 | : Auotnegotiation is On. |
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