Switching

Discuss Catalyst brand switches with peers and experts.
cancel
Showing results for 
Search instead for 
Did you mean: 
cancel

Labels

Forum Posts

 I am having issue with one of my desktops connected to my switch interface flipping between two MAC addresses (see the attached picture below for log). When I disconnect the desktop the IP and the MAC issues will not show in the log. I reimaged the ...

SamsonOjo_1-1751387314612.png
SamsonOjo by Level 1
  • 847 Views
  • 21 replies
  • 0 Helpful votes

I have a question about the following default values in Catalyst 9000 series version 17.12.5.・no thermal shutdown disableI have a concern that the temperature will rise and the power will be turned off when the FAN fails.・no ethernet reuse subInterfa...

CHISHIUNG by Level 1
  • 31 Views
  • 1 replies
  • 0 Helpful votes

Hello Cisco community,  I have a Cisco 9200L.  For some reason, we have had no luck migrating from password 7 to password 6.  Each time I attempt config, it gives me an error.  I even tried a new switch for additional testing, but still gives same re...

Greetings,I have aquired a second hand WS-C3650-8X24UQ-S. Appears to be working as is (connected to router and one pc), and no password. When looking up reset instructions, I see typically you flash_init, then delete config.text and vlan.dat (after h...

DH2025 by Community Member
  • 111 Views
  • 4 replies
  • 0 Helpful votes

Hi network gurus,            I have a hard time to determine which part cable is broken at below. Do both short and open mean that we have cable issue from patch panel to the Ethernet port on the wall (the cable run inside the wall/ceiling), and the ...

PolarPanda by Level 1
  • 61913 Views
  • 20 replies
  • 0 Helpful votes

I was in the midst of trying to write a Cat Centre template to handle the prompt when using 'vtp primary' exec command for a vtp v3 server.Then I realised I could just tack on the 'force' option and bypass the check. But I wanted to know what it was ...

DJW487_0-1751944406559.png DJW487_1-1751944432986.png DJW487_2-1751944497550.png DJW487_3-1751944799578.png
DJW487 by Level 1
  • 114 Views
  • 2 replies
  • 0 Helpful votes

Hi all, Could someone please explain to me why I see the things I do with MST? I have the below setup in a lab, where SW1 is configured with the lowest Cost and is the root bridge. Everything is working as expect, in regards to STP, and SW4 is Blocki...

rasmuselmholt_0-1751544990300.png

Hi, We received a replacement supervisor and upgraded the line cards software without any issues.  We notice the firmware versions are different the supervisors devices. The replacement supervisor unit has an higher firmware version on it then the ac...

I have 4 Nexus 9300 switches.  I am trying to assign them IPs and create a VLAN.  I noticed on one of the switches the default VLAN (1) has no Ethernet ports available except for the trunk lines 47 and 48 assigned to it.  When i created the VLAN it d...

John N by Level 1
  • 172 Views
  • 6 replies
  • 0 Helpful votes

I recently got an IEM-16P expansion module for an IE-3300-8P2S and cannot get it to pass POE. I've tried the expansion module on two separate 3300 base switches with the same result.  With a 48VDC 480W power supply I can power an IE-3300-8P2S with an...

dbronco by Level 1
  • 129 Views
  • 5 replies
  • 0 Helpful votes