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Hi All,I wanted to understand why switch wont form a Trunk if both sides are dynamic auto.I have done the simulation lab and can see even dynamic auto sends a negotiation message.Just wanted to understand what headers switch will check to make the po...

jpduminy by Level 1
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  • 1 replies
  • 0 Helpful votes

So today I had an SSH session going to my ISR 3925 SEC/K9 running IOS version 15.7 and I suddenly lost the connection.  When I tried to reconnect I received the error in Putty stating that the connection was refused.  I quickly obtained a console con...

jcone by Level 1
  • 57124 Views
  • 10 replies
  • 0 Helpful votes

Hi, Peeps,I have a Cisco Catalyst 2960X and early today I upgraded the firmware, upon reloading, the switch did not boot anymore, I tried the following workarounds:1. Pressing the Mode Button for 15 secs2. Power cycling the switch3. Trying to do the ...

tenj0u05_0-1687789528286.jpeg
tenj0u05 by Level 1
  • 10892 Views
  • 40 replies
  • 0 Helpful votes

Upgraded this morning from IOS-XE 17.12.03 -> 17.15.03 (C9300-48UXM). I am now getting these messages in the logs:Apr 18 2025 08:45:34.943 CST: %IOSXE-3-PLATFORM: Switch 1 R0/0: fed: Stealthwatch Cloud is not initialized.Please configure to use this ...

We use many 9200 8 port switches with the micro USB-B console interface.  Up till today, techs have been using a OTC micro USB cable to access the 9200 V01 switches for configuration.  We attempted to configure a fresh from the box C9200CX-8P-2X2G-A ...

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Resolved! DHCP vlan trouble

Hello, can anyone help me with a DHCP problem when I try to configure my PCs VLAN20 . This is for my term paper . I lost a lot of time trying to fix it myself. My computers are not getting ip addresses through DHCP and also I can't ping other vlans!

Hi Amazing People here - please helpI am trying to upgrade my C9500-48Y4C switch from 17.09.04a to 17.09.06a but it failed everytime.I copied the new file to the flash - that worked perfectly fine.when I do install add file flash: XXXXXXXXXit gives m...

ello Community,we have some issues concerning VRF and MAB that we don't understand.Our Platform is a C9500, network essential smart license.We use the Mgmt-interface gi0/0 for security reasons and a central radius server for authentication, which wor...

Andi1075 by Level 1
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  • 9 replies
  • 0 Helpful votes