Dell MXL 10GbE Reference Manual page 1475

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You can display master/slave settings with the show interfaces command.
Example
Dell(conf)# int tengig 0/0
(Master/Slave)
Dell(conf-if)#neg auto
Dell(conf-if-autoneg)# ?
end
exit
mode
no
show
Dell(conf-if-autoneg)#mode ?
forced-master Force port to master mode
forced-slave Force port to slave mode
Dell(conf-if-autoneg)#
Example
Dell#show interfaces configured
(Master/Slave,
TenGigabitEthernet 13/18 is up, line protocol is up
Hardware is Dell Force10Eth, address is 00:01:e8:05:f7:fc
partial)
Interface index is 474791997
Internet address is 1.1.1.1/24
MTU 1554 bytes, IP MTU 1500 bytes
LineSpeed 1000 Mbit, Mode full duplex, Master
ARP type: ARPA, ARP Timeout 04:00:00
Last clearing of "show interfaces" counters 00:12:42
Queueing strategy: fifo
Input Statistics:
...
User
Both sides of the link must have auto-negotiation enabled or disabled for the link
Information
to come up.
The following details the possible speed and auto-negotiation combinations for a
line between two 10/100/1000 Base-T Ethernet interfaces.
Port 0
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Port 1
PMUX Mode of the MXL 10/40GbE Switch I/O Module
Slave
Auto-neg Error — typically indicates that both ends of the node are configured
with forced-master or forced-slave.
CAUTION: Ensure that one end of your node is configured as forced-master
and one is configured as forced-slave. If both are configured the same (that
is, forced-master or forced-slave), the show interfaces command flaps
between an auto-neg-error and forced-master/slave states.
Exit from configuration mode
Exit from autoneg configuration mode
Specify autoneg mode
Negate a command or set its defaults
Show autoneg configuration information
Current address is 00:01:e8:05:f7:fc
auto-negotiation enabled* speed 1000 or auto
auto-negotiation enabled speed 100
auto-negotiation disabled speed 100
auto-negotiation disabled speed 100
auto-negotiation enabled* speed 1000 or auto
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