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Cisco C9300-24S switch incorrectly configures port speed for SFP?

jeffreyfarrell
Level 1
Level 1

I've got 14 GLC-GE-100FX SFP's in a 9300 switch. Ports 1-10 with these SFP's have the correct port speed setting (100Mb/s), but ports 11-14 have have the incorrect port setting of 1000Mb/s. I cannot manually change the port speed. What are my options?

 

Switch#show interface status

Port Name Status Vlan Duplex Speed Type
Gi1/0/1 Short Tape notconnect 1 full 100 100BaseFX SFP
Gi1/0/2 Measuring Roll notconnect 1 full 100 100BaseFX SFP
Gi1/0/3 Long Tape notconnect 1 full 100 100BaseFX SFP
Gi1/0/4 Test Section notconnect 1 full 100 100BaseFX SFP
Gi1/0/5 Cutter notconnect 1 full 100 100BaseFX SFP
Gi1/0/6 Cooler notconnect 1 full 100 100BaseFX SFP
Gi1/0/7 **bleep** notconnect 1 full 100 100BaseFX SFP
Gi1/0/8 Outlet notconnect 1 full 100 100BaseFX SFP
Gi1/0/9 Tape connected 1 full 100 100BaseFX SFP
Gi1/0/10 Inlet notconnect 1 full 100 100BaseFX SFP
Gi1/0/11 connected 1 full 1000 100BaseFX SFP

Port Name Status Vlan Duplex Speed Type
Gi1/0/12 connected 1 full 1000 100BaseFX SFP
Gi1/0/13 connected 1 full 1000 100BaseFX SFP
Gi1/0/14 connected 1 full 1000 100BaseFX SFP
Gi1/0/15 notconnect 1 auto auto 10/100/1000BaseTX SFP
Gi1/0/16 Avtron to PLC Netw notconnect 1 auto auto 10/100/1000BaseTX SFP
Gi1/0/17 Drive Room PC notconnect 1 auto auto 10/100/1000BaseTX SFP
Gi1/0/18 Drive Room PC notconnect 1 auto auto 10/100/1000BaseTX SFP
Gi1/0/19 Drive Room PC notconnect 1 auto auto 10/100/1000BaseTX SFP
Gi1/0/20 Couch notconnect 1 auto auto 10/100/1000BaseTX SFP
Gi1/0/21 1st Press notconnect 1 auto auto 10/100/1000BaseTX SFP
Gi1/0/22 2nd Press notconnect 1 auto auto 10/100/1000BaseTX SFP
Gi1/0/23 Pre-dryer notconnect 1 auto auto 10/100/1000BaseTX SFP

 

Switch#show interface gi1/0/11
GigabitEthernet1/0/11 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 04bd.9775.450b (bia 04bd.9775.450b)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, link type is auto, media type is 100BaseFX SFP
input flow-control is on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:32, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes, 0 no buffer
Received 0 broadcasts (0 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
146 packets output, 57224 bytes, 0 underruns
Output 20 broadcasts (0 multicasts)
0 output errors, 0 collisions, 2 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out

 

Switch#show interface gi1/0/11 capabilities
GigabitEthernet1/0/11
Model: C9300-24S
Type: 100BaseFX SFP
Speed: 100
Duplex: full,half
Trunk encap. type: 802.1Q
Trunk mode: on,off,desirable,nonegotiate
Channel: yes
Broadcast suppression: percentage(0-100)
Unicast suppression: percentage(0-100)
Multicast suppression: percentage(0-100)
Flowcontrol: rx-(off,on,desired),tx-(none)
Fast Start: yes
QoS scheduling: rx-(not configurable on per port basis),
tx-(2p6q3t)
CoS rewrite: yes
ToS rewrite: yes
UDLD: yes
Inline power: no
SPAN: source/destination
PortSecure: yes
Dot1x: yes
Breakout Support: not applicable

15 Replies 15

Hi

 You mean, you are not allowed to access the switch and change port speed with commnad "speed 100" ?

Actually you have the correct port speed as those interface is Giga. 

Hello,

 

I have admin rights. The switch does not accept the 'speed 100' or 'speed auto' commands when the glc-ge-100fx SFP is in the port. It forces it to a speed that is determined by the fiber SFP thats plugged in.

 

Ports 1-14 are all using 100Mb/s SFP's, however ports 11-14 are all set to 1000Mb/s which is incorrect. I cannot manually change the speed.

 

All SFP slots on the switch are compatable with 100Mb/s.

 

Thank you,

Jeff

Hello,

 

I tried a firmware upgrade to one of the known fixed releases and the issue is still present.

 

Thank you.

I WANT TO UPDATE ALL I READ THIS IN CISCO Doc.
"If you want to hard code the speed and duplex on a switch that runs Cisco IOS Software (turn off auto-negotiation), issue the speed and duplex commands underneath the specific interface."
disable auto negotiation<- disable first then hard code
hard code the speed and duplex.

Hello,

 

I cannot manually change the speed.

 

Switch#config t
        Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#interface gi 1/0/12
Switch(config-if)#speed 100
^
% Invalid input detected at '^' marker.

 

Thank you.

please see above my comment about (disable auto then hard code)

NOW 

try one of this two way
1-
A-disable auto negotiation
B-hard cod the Speed in other Side 

2-
A-auto negotiation
B-hard code the Speed in other Side



 

please can you share the 
show capability for both side 
if the issue not solve?

I have tried setting nonegotate and hard coding speed with no results. Each time it either doesn’t accept the command or I do it through the web interface and it appears that nothing has happened. Can you send the cli sequence you would like me to try for changing auto negotiate and setting port speed?

 

Port capabilities with no SFP Transciever in the slot:

 

Switch# show interface gi 1/0/11 capabilities

GigabitEthernet1/0/11

  Model:                 C9300-24S

  Type:                  unknown

  Speed:                 10,100,1000,auto

  Duplex:                full,half,auto

  Trunk encap. type:     802.1Q

  Trunk mode:            on,off,desirable,nonegotiate

  Channel:               yes

  Broadcast suppression: percentage(0-100)

  Unicast suppression:   percentage(0-100)

  Multicast suppression: percentage(0-100)

  Flowcontrol:           rx-(off,on,desired),tx-(none)

  Fast Start:            yes

  QoS scheduling:        rx-(not configurable on per port basis), tx-(2p6q3t)

  CoS rewrite:           yes

  ToS rewrite:           yes

  UDLD:                  yes

  Inline power:          no

  SPAN:                  source/destination

  PortSecure:            yes

  Dot1x:                 yes

  Breakout Support:      not applicable

 

Port capabilities with a SFP Transciever in the slot:

Note that the SFP is correctly identified. Both speed and type.

Switch#show interface gi 1/0/11 capabilities

GigabitEthernet1/0/11

  Model:                 C9300-24S

  Type:                  100BaseFX SFP

  Speed:                 100

  Duplex:                full,half

  Trunk encap. type:     802.1Q

  Trunk mode:            on,off,desirable,nonegotiate

  Channel:               yes

  Broadcast suppression: percentage(0-100)

  Unicast suppression:   percentage(0-100)

  Multicast suppression: percentage(0-100)

  Flowcontrol:           rx-(off,on,desired),tx-(none)

  Fast Start:            yes

  QoS scheduling:        rx-(not configurable on per port basis), tx-(2p6q3t)

  CoS rewrite:           yes

  ToS rewrite:           yes

  UDLD:                  yes

  Inline power:          no

  SPAN:                  source/destination

  PortSecure:            yes

  Dot1x:                 yes

  Breakout Support:      not applicable

 

Without an SFP Transciever in the slot:

Switch# show interface gi 1/0/11

GigabitEthernet1/0/11 is down, line protocol is down (notconnect)

  Hardware is Gigabit Ethernet, address is 04bd.9775.450b (bia 04bd.9775.450b)

  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive not set

  Full-duplex, 100Mb/s, link type is force-up, media type is unknown

  input flow-control is on, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input never, output 00:16:20, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes, 0 no buffer

     Received 0 broadcasts (0 multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 0 multicast, 0 pause input

     0 input packets with dribble condition detected

     291 packets output, 73336 bytes, 0 underruns

     Output 34 broadcasts (257 multicasts)

     0 output errors, 0 collisions, 4 interface resets

     0 unknown protocol drops

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier, 0 pause output

     0 output buffer failures, 0 output buffers swapped out

 

With a SFP Transciever in the slot:

Please note that the port speed changes to 1000Mb/s. No fiber is plugged into the transceiver and the transceiver is correctly identified as 100Mb/s. Why is it doing this?????

 

Switch# show interface gi 1/0/11

GigabitEthernet1/0/11 is up, line protocol is up (connected)

  Hardware is Gigabit Ethernet, address is 04bd.9775.450b (bia 04bd.9775.450b)

  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive not set

  Full-duplex, 1000Mb/s, link type is force-up, media type is 100BaseFX SFP

  input flow-control is on, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input never, output 00:00:38, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes, 0 no buffer

     Received 0 broadcasts (0 multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 0 multicast, 0 pause input

     0 input packets with dribble condition detected

     300 packets output, 76952 bytes, 0 underruns

     Output 35 broadcasts (265 multicasts)

     0 output errors, 0 collisions, 4 interface resets

     0 unknown protocol drops

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier, 0 pause output

     0 output buffer failures, 0 output buffers swapped out

 

 

 

With a SFP Transciever in the slot and plugged into a 1783-ETAP1F (100Mb/s, Full Duplex):

 

Speed remains at 1000Mb/s.

 

Switch#show interface gi 1/0/11

GigabitEthernet1/0/11 is up, line protocol is up (connected)

  Hardware is Gigabit Ethernet, address is 04bd.9775.450b (bia 04bd.9775.450b)

  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive not set

  Full-duplex, 1000Mb/s, link type is force-up, media type is 100BaseFX SFP

  input flow-control is on, output flow-control is unsupported

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input never, output 00:00:17, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes, 0 no buffer

     Received 0 broadcasts (0 multicasts)

     0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog, 0 multicast, 0 pause input

     0 input packets with dribble condition detected

     324 packets output, 81896 bytes, 0 underruns

     Output 36 broadcasts (288 multicasts)

     0 output errors, 0 collisions, 4 interface resets

     0 unknown protocol drops

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier, 0 pause output

     0 output buffer failures, 0 output buffers swapped out

I am also facing similar issue, no option to disable auto negotiate. I want to set my SFP speed to 1g

TenGigabitEthernet1/1/1
  Model:                 C9300L-24T-4X
  Type:                  SFP-10GBase-SR
  Speed:                 10000
  Duplex:                full
  Trunk encap. type:     802.1Q
  Trunk mode:            on,off,desirable,nonegotiate
  Channel:               yes
  Broadcast suppression: percentage(0-100)
  Unicast suppression:   percentage(0-100)
  Multicast suppression: percentage(0-100)
  Flowcontrol:           rx-(off,on,desired),tx-(none)
  Fast Start:            yes
  QoS scheduling:        rx-(not configurable on per port basis),
                         tx-(2p6q3t)
  CoS rewrite:           yes
  ToS rewrite:           yes
  UDLD:                  yes
  Inline power:          no
  SPAN:                  source/destination
  PortSecure:            yes
  Dot1x:                 yes
  Breakout Support:      not applicable

 

 


@hasab wrote:
I want to set my SFP speed to 1g

Buy a 1 Gbps optic.

Leo Laohoo
Hall of Fame
Hall of Fame

What firmware is the switch on?

This looks like CSCvs78413.

Hello,

 

Switch firmware was 17.3.5. I just upgraded to 17.6.3 a few minutes ago with hopes that would resolve the issue and had no luck.

 

The issue is with the port speed not duplex.

 

Thank you.

Get 3rd party optics and try using them.

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