Example:
- Configure 10G interface (SFP+) to be 1G interface
- Configure 100G interface (QSFP+) to be 40G interface
Restriction:
- Require additional settings for Port Type changes. i.g
- Breakout Cable QSFP+ to 4 x SFP+/SFP28
- AS7326-56X 25G to 10G (refer to this article)
- AS7816-64X 100G to 10G/25G (refer to another Article:TBD)
- known issue: It does not return failed if configure wrong speed on interface
e.g: configure 1000G on the interface
admin@sonic:~$ sudo config interface speed Ethernet2 1000000 admin@sonic:~$ show interfaces status | head -n 5 Interface Lanes Speed MTU Alias Vlan Oper Admin Type Asym PFC ----------- --------------- ------- ----- ------------- ------ ------ ------- --------------- ---------- Ethernet0 73 10G 9100 swp001 trunk up up QSFP+ or later N/A Ethernet1 74 10G 9100 swp002 trunk up up QSFP+ or later N/A Ethernet2 75 1000G 9100 swp003 routed down up N/A N/A
Reference model:
- Switch model name: AS5835-54X
- Edgecore SONiC version: SONiC.Edgecore-SONiC_20191003_122002_ec201904_175
Procedure:
Steps 1. Configure 10G interface (SFP+) to be 1G interface.
Ethernet0 and Ethernet1 as an example.
admin@sonic:~$ sudo config interface speed Ethernet0 1000
admin@sonic:~$ sudo config interface speed Ethernet1 1000
Caution:
- Please make sure port name (i.e Ethernet0) is correct. Otherwise it does not work.
- Make sure Tx_Disable is Disabled on 10G interface. Otherwise, the 10G port can NOT link UP even speed configuration is correct.
-
admin@sonic:~$ echo 0 | sudo tee /sys/bus/i2c/devices/3-0061/module_tx_disable_1
admin@sonic:~$ echo 0 | sudo tee /sys/bus/i2c/devices/3-0061/module_tx_disable_2
Steps 2. Configure 100G interface (QSFP) to be 40G interface.
Ethernet48 and Ethernet52 as an example.
admin@sonic:~$ sudo config interface speed Ethernet48 40000
admin@sonic:~$ sudo config interface speed Ethernet52 40000
Caution: please make sure port name is correct. Otherwise it does not work.
Steps 3. Save the configuration to config_db.json
admin@sonic:~$ sudo config save -y
Steps 4. Check the port speed setting on config_db.json
admin@sonic:~$ sudo vi /etc/sonic/config_db.json {
omitted...
"PORT": {
"Ethernet0": {
"admin_status": "up",
"alias": "tenGigE1",
"index": "1",
"lanes": "1",
"mtu": "9100",
"speed": "1000"
},
"Ethernet1": {
"admin_status": "up",
"alias": "tenGigE2",
"index": "2",
"lanes": "2",
"mtu": "9100",
"speed": "1000"
},
...
"Ethernet48": {
"admin_status": "up",
"alias": "hundredGigE49",
"index": "49",
"lanes": "37,38,39,40",
"mtu": "9100",
"speed": "40000"
},
"Ethernet52": {
"admin_status": "up",
"alias": "hundredGigE50",
"index": "53",
"lanes": "29,30,31,32",
"mtu": "9100",
"speed": "40000"
},
omitted...
}
Steps 5. Check the port speed by SONiC command
admin@sonic:~$ show interface status | grep 'Ethernet0 \|Ethernet1 \|Ethernet48\|Ethernet52' Ethernet0 1 1G 9100 tenGigE1 routed up up N/A N/A
Ethernet1 2 1G 9100 tenGigE2 routed up up N/A N/A
Ethernet48 37,38,39,40 40G 9100 hundredGigE49 routed up up QSFP+ or later N/A
Ethernet52 29,30,31,32 40G 9100 hundredGigE50 routed up up QSFP+ or later N/A
Appendix:
Check port speed by bcmshell
admin@sonic:~$ bcmcmd 'ps'
ps
ena/ speed/ link auto STP lrn inter max cut loop
port link Lns duplex scan neg? state pause discrd ops face frame thru? back
ge0( 1) up 1 1G FD SW No Forward TX RX None F SGMII 9122 No
ge1( 2) up 1 1G FD SW No Forward TX RX None F SGMII 9122 No
xe0( 3) down 1 10G FD SW No Forward None F XFI 9122 No
xe1( 4) down 1 10G FD SW No Forward None F XFI 9122 No
xe2( 5) down 1 10G FD SW No Forward None F XFI 9122 No
xe3( 6) down 1 10G FD SW No Forward None F XFI 9122 No
xe4( 7) down 1 10G FD SW No Forward None F XFI 9122 No
xe5( 8) down 1 10G FD SW No Forward None F XFI 9122 No
xe6( 9) down 1 10G FD SW No Forward None F XFI 9122 No
xe7( 10) down 1 10G FD SW No Forward None F XFI 9122 No
xe8( 11) down 1 10G FD SW No Forward None F XFI 9122 No
xe9( 12) down 1 10G FD SW No Forward None F XFI 9122 No
xe10( 13) down 1 10G FD SW No Forward None F XFI 9122 No
xe11( 14) down 1 10G FD SW No Forward None F XFI 9122 No
xe12( 15) down 1 10G FD SW No Forward None F XFI 9122 No
xe13( 16) down 1 10G FD SW No Forward None F XFI 9122 No
xe14( 17) down 1 10G FD SW No Forward None F XFI 9122 No
xe15( 18) down 1 10G FD SW No Forward None F XFI 9122 No
xe16( 19) down 1 10G FD SW No Forward None F XFI 9122 No
xe17( 20) down 1 10G FD SW No Forward None F XFI 9122 No
xe18( 21) down 1 10G FD SW No Forward None F XFI 9122 No
xe19( 22) down 1 10G FD SW No Forward None F XFI 9122 No
xe20( 23) down 1 10G FD SW No Forward None F XFI 9122 No
xe21( 24) down 1 10G FD SW No Forward None F XFI 9122 No
xe22( 39) down 1 10G FD SW No Forward None F XFI 9122 No
xe23( 40) down 1 10G FD SW No Forward None F XFI 9122 No
xe24( 41) down 1 10G FD SW No Forward None F XFI 9122 No
xe25( 42) down 1 10G FD SW No Forward None F XFI 9122 No
xe26( 43) down 1 10G FD SW No Forward None F XFI 9122 No
xe27( 44) down 1 10G FD SW No Forward None F XFI 9122 No
xe28( 45) down 1 10G FD SW No Forward None F XFI 9122 No
xe29( 46) down 1 10G FD SW No Forward None F XFI 9122 No
xe30( 47) down 1 10G FD SW No Forward None F XFI 9122 No
xe31( 48) down 1 10G FD SW No Forward None F XFI 9122 No
xe32( 49) down 1 10G FD SW No Forward None F XFI 9122 No
xe33( 50) down 1 10G FD SW No Forward None F XFI 9122 No
xe34( 51) down 1 10G FD SW No Forward None F XFI 9122 No
xe35( 52) down 1 10G FD SW No Forward None F XFI 9122 No
xe36( 53) down 1 10G FD SW No Forward None F XFI 9122 No
xe37( 54) down 1 10G FD SW No Forward None F XFI 9122 No
xe38( 55) down 1 10G FD SW No Forward None F XFI 9122 No
xe39( 56) down 1 10G FD SW No Forward None F XFI 9122 No
xe40( 57) down 1 10G FD SW No Forward None F XFI 9122 No
xe41( 58) down 1 10G FD SW No Forward None F XFI 9122 No
xe42( 59) down 1 10G FD SW No Forward None F XFI 9122 No
xe43( 60) down 1 10G FD SW No Forward None F XFI 9122 No
xe44( 61) down 1 10G FD SW No Forward None F XFI 9122 No
xe45( 62) down 1 10G FD SW No Forward None F XFI 9122 No
xe46( 27) up 4 40G FD SW No Forward TX RX None F XLAUI 9122 No
xe47( 25) up 4 40G FD SW No Forward TX RX None F XLAUI 9122 No
ce0( 26) down 4 100G FD SW No Forward None F CAUI4 9122 No
ce1( 35) down 4 100G FD SW No Forward None F CAUI4 9122 No
ce2( 34) down 4 100G FD SW No Forward None F CAUI4 9122 No
ce3( 33) down 4 100G FD SW No Forward None F CAUI4 9122 No
xe48( 64) down 1 10G FD SW No Forward None FA XFI 9412 No
drivshell>
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