Forum Discussion

itplustech

Aspirant

Nov 19, 2016

Solved

port 25 on GS724Tv4 keeps shutting down

Need some help!

We have a fibre link between 2 offices.

Office 1 has a GS724Tv4 smart managed Switch and Office 2 has a JGS516 unmanaged switch with a fibre media converter.

since 2 days ago port 25 on the GS724Tv4 has been shutting down and Office 2 cannot connect to Office 1 over the fibre link.

I can enable the port but it soon shuts down again.

Having a look at the logs I see the following:-

DOT1S[61169596]: dot1s_txrx.c(225) 25002 %% dot1sBpduReceive(): Discarding the BPDU, cannot get buffer from buff pool

Spanning Tree Topology Change Initiated: 0, Interface: g25

DOT1S[55471756]: dot1s_control.c(1223) 239 %% Rate limit of 15 for 3 consectutive seconds has been exceeded on port g25

OT1S[55471756]: dot1s_ih.c(1646) 238 %% Diagnostically disabling interface g25

Let me know what you think this could be related to?

Thanks!

Troubleshooting

itplustech
Nov 23, 2016
Apologies for the delay. Had to eventually go oniste.
Problem was that some champion decided to loop a cable into a small 5 port switch
Removed and problem solved

4 Replies

DaneA
NETGEAR Employee Retired
Nov 20, 2016
Hi itplustech,

Welcome to the community! :)

Let us isolate the problem. There are 2 SFP ports on the GS724Tv4 switch which are ports 25 and 26. Kindly connect the fiber link to port 26 of the GS724Tv4 then observe if it will shutdown as well as if the same logs will still appear.

Kindly answer the questions below:

a. What is the current firmware version of the GS724Tv4 switch?

b. After you have connected the fiber link to port 26 of the GS724Tv4, did it shutdown?

c. Does same logs appeared after you have connected the fiber link to port 26 of the GS724Tv4?

I look forward to your response.

Regards,

DaneA

NETGEAR Community Team
DaneA
NETGEAR Employee Retired
Nov 23, 2016
itplustech,

I just want to follow-up on this.

Regards,

DaneA

NETGEAR Community Team
- itplustech
  Aspirant
  Nov 23, 2016
  Apologies for the delay. Had to eventually go oniste.
  Problem was that some champion decided to loop a cable into a small 5 port switch
  Removed and problem solved
  - DaneA
    NETGEAR Employee Retired
    Nov 23, 2016
    itplustech,
    
    I'm glad that you were able to figure it out and resolved the problem. :)
    
    Since the problem has been resolved, I encourage you to mark the appropriate reply as the “Accepted Solution” so others can be confident in benefiting from the solution. The NETGEAR Community looks forward to hearing from you and being a helpful resource in the future!
    
    Regards,
    
    DaneA
    
    NETGEAR Community Team