AS4630 series - How to configure the port speed on 1G RJ45 switch ports manually? Follow

Purpose : 
This article shows how to manually configure the port speed of RJ45 switch ports to 10M and 100M in Accton-Diag.

Model : 

AS4630-54PE / AS4630-54TE

Procedure : 

Step-1 Please power cycle the switch and boot into the ACCTON-DIAG

Use the below command to login to the BRCM shell.

root@(none):/# swutil -C -s 
root@(none):/# cd /usr/local/bin/ 
root@(none):/usr/local/bin# ./bcm.user
<omit>
BCM.0>

Step-2 Check the default configuration in ACCTON-DIAG

For supporting 1G speed the "auto-negotiation" MUST be enabled. By default, the "auto-negotiation" is enabled.

You can use the below command to check the port status and settings. In the following example, we connected port1 to port2 directly. *The auto-negotiation shows yes means it enables.

BCM.0> ps ge0-ge1
                 ena/        speed/ link auto    STP                  lrn  inter   max   cut   loop
           port  link  Lns   duplex scan neg?   state   pause  discrd ops   face frame  thru?  back   encap
       ge0( 26)  up     1    1G  FD   SW  Yes  Forward  TX RX   None   FA  SGMII 12284                IEEE
       ge1( 25)  up     1    1G  FD   SW  Yes  Forward  TX RX   None   FA  SGMII 12284                IEEE

The port link will DOWN if we disabled the auto-negotiation. *The "an=0" parameter means disabled auto-negotiation.

BCM.0> port ge0-ge1 an=0
BCM.0> ps ge0-ge1

                 ena/        speed/ link auto    STP                  lrn  inter   max   cut   loop
           port  link  Lns   duplex scan neg?   state   pause  discrd ops   face frame  thru?  back   encap
       ge0( 26)  down   1    1G  FD   SW  No   Forward  TX RX   None   FA  SGMII 12284                IEEE
       ge1( 25)  down   1    1G  FD   SW  No   Forward  TX RX   None   FA  SGMII 12284  

Step-3 Set port speed to 100M or 10M

For configuring 100M or 10M speed manually that the "auto-negotiation" MUST be disabled.

Configure the port speed to 100M:

BCM.0> port ge0-ge1 speed=100 an=0 if=sgmii MDIX=FA
BCM.0>
BCM.0> ps ge0-ge1
                 ena/        speed/ link auto    STP                  lrn  inter   max   cut   loop
           port  link  Lns   duplex scan neg?   state   pause  discrd ops   face frame  thru?  back   encap
       ge0( 26)  up     1   100M  FD   SW  No   Forward  TX RX   None   FA  SGMII 12284                IEEE
       ge1( 25)  up     1   100M  FD   SW  No   Forward  TX RX   None   FA  SGMII 12284                IEEE

Configure the port speed to 10M:

BCM.0> port ge0-ge1 speed=10 an=0 if=sgmii MDIX=FA
BCM.0>
BCM.0> ps ge0-ge1
                 ena/        speed/ link auto    STP                  lrn  inter   max   cut   loop
           port  link  Lns   duplex scan neg?   state   pause  discrd ops   face frame  thru?  back   encap
       ge0( 26)  up     1    10M  FD   SW  No   Forward  TX RX   None   FA  SGMII 12284                IEEE
       ge1( 25)  up     1    10M  FD   SW  No   Forward  TX RX   None   FA  SGMII 12284                IEEE