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9706
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100 mbps devices not working on new 9200 switches

ColeB20570
Level 1
Level 1

There is a lot to unpack here so bear with me!

 

Sh run and sh ver are attached.

 

Recently replaced 5 older switches with 9200-48P's running 17.03.04. Ran into an issue with some older devices that are 100mbps and have static IP's. They are unable to connect to the network. Most of these are printers of different models.

 

So far we've change IP's, changed NIC (so MAC), changed cables, made sure the printer firmware is updated, and changed settings on the ports. Removed all QOS from the ports. Set speed to 100 and tried auto. Set duplex to auto, full, and half. I've downgraded the firmware to 16.12.06.

 

The devices work fine when we installed a 3500 switch in place just to verify the runs aren't bad. We have like 12 devices having this issue.

 

When I do sho int summery on the interfaces we only see OQD going up.

                    Interface IHQ IQD OHQ OQD RXBS RXPS TXBS TXPS TRTL
-----------------------------------------------------------------------------------------------------------
* GigabitEthernet1/0/36 0  0      0  629928 0        0       0       0        0
 
Port shows connected.
Gi1/0/36 connected 38 a-full a-100 10/100/1000BaseTX
 
2WestTEST#sh int gi1/0/36
GigabitEthernet1/0/36 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is c44d.8439.7924 (bia c44d.8439.7924)
MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 100Mb/s, media type is 10/100/1000BaseTX
input flow-control is on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 42010
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
1180 packets input, 175607 bytes, 0 no buffer
Received 1169 broadcasts (360 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 360 multicast, 0 pause input
0 input packets with dribble condition detected
3 packets output, 208 bytes, 0 underruns
Output 0 broadcasts (0 multicasts)
0 output errors, 0 collisions, 10 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
 
We are at a complete loss as to why this is happening. Any ideas are greatly appreciated!
3 Accepted Solutions

Accepted Solutions

ColeB20570
Level 1
Level 1

Downgraded to 16.12.03a and the devices have started working again. Going to give it a few day before I declare this has been solved. Downgraded yesterday afternoon and everything is still working this morning. 

View solution in original post

Do we know if this is something that has been fixed in the later versions of 17.x? 

View solution in original post

wsyrnick
Cisco Employee
Cisco Employee

Hi,

Based on your show run, you hit https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvz76172.

17.6.2/17.3.5 have a fix.

 

Thanks,

Wojciech

 

View solution in original post

28 Replies 28

Reza Sharifi
Hall of Fame
Hall of Fame

Is this happening on all 5 new switches or just one?

Also, have you consulted Cisco TAC?

 

HTH

 

Yes on all 5 switches. The one I posted we setup this morning with different Firmware to test.

Haven't contacted TAC yet. Figured we'd start here.

Ok, can you try disabling POE on a port (as Georg suggested) and test? Also, what type of copper cable do you have in place? cat5, cat6, 6a, etc...If these suggestions don't resolve the issue, I would call Cisco.

HTH 

Using cat5 cable. We also disabled POE and the issue persists. 

Hello,

 

I was just about to say that the switchports have PoE enabled by default, you might want to turn it off...but I saw the issue has already been resolved.

Leo Laohoo
Hall of Fame
Hall of Fame

Force the ports to negotiate to 10/100 Mbps:  speed auto 10 100

IMPORTANT:  Make sure to include the mode "auto".

Doing speed auto 10 100 doesn't remove 1000 as an option. It is being auto detected at duplex- full and speed- 100.


@ColeB20570 wrote:

Doing speed auto 10 100 doesn't remove 1000 as an option. It is being auto detected at duplex- full and speed- 100.


I am trying to determine if there is a cable fault or not.  This is why I am recommending configuring the port to auto (negotiate) 10/100Mbps.

Appreciate the response.

Setting that on the port didn't fix the issue.

Cables have been changed. This is happening on around 15-20 devices in two different data closets on different VLANs.

Can you try to directly-connect the devices to the switch?  I want to eliminate any horizontal cabling "anomalies".   

I might be able to move one printer and do that. Won't be until tomorrow though.


@ColeB20570 wrote:
I might be able to move one printer and do that. Won't be until tomorrow though.

Printer?  Oh, no.  Don't move it.  I have another way around it. 

Is there a PoE phone?  Plug the phone into the same patch port as the printer.  IF it does not work, directly-connect the PoE phone to the switch.  

The phone works using the same patch port and cabling.

Just want to make sure that the phone not only powers up but is able to make calls, right?  Powering up is only one slice of the troubleshooting.

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