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Hello, Another weird behavior that my be related to my other post but as I'm not sure, I prefer opening a new thread. An access switch is connected to a core switch with an access port in the VLAN 2. From the core switch logs, I can sometimes see the...
Dear Cisco community, I had an issue with an access switch (C2960X) that has been disconnected from the whole network because its uplink went into an "err-disabled" state. The access switch has only one L2 copper uplink to one of our core switch thro...
Dear Cisco Community, We had troubles with the network connections of some of our users (very low bandwidth when accessing internal resources). After investigation, we've found out that the root cause was the speed (100) and duplex (full duplex) sett...
Dear Cisco Community,I have specific questions regarding the power input of switch stack members :In a stack with two Catalyst 3750X switches (1 power supply each) connected together with stack cables + PowerStack cables, can I connect the power supp...
Hi, Sorry for the delay of my reply. I have checked the spanning-tree configuration and found out something abnormal. In fact, the VLAN 2 root bridge (we're using PVST+) is not one of our core switches as it should be but is a device part of a third-...
@balaji.bandi wrote:3750 switch connect to each Core for the uplink2960 access switch connected to 3750 ? is this correctYes, this is correct. @balaji.bandi wrote:how is these connected L2 ? from 2960 to 3750 to Core ? or L3 ?Yes, the 2960 is connec...
Hi balaji, Thanks for your reply. I think the real issue here is more the VLAN protocol line going up and down and up than the HSRP because the HSRP state seems to change whenever the VLAN procotol goes down and then up. Also, the HSRP state changes ...
Hi Deepak, Thanks for your fast reply. Cannot access the link to the bug details, could you please explain me how can I investigate a large number of TCN and what do you mean by a type-2 cable ? Thank you very much.
Thank you very much to all of you for your helpful and detailed answers, they improve my understanding of the situation. Bonus question :We've spent more time than we should have done to investigate the problem because we first tried to do a speedtes...
