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Hello,I have a stack of 6x 3850 PoE capable switches, recently some ports started to fail to give PoE and/or going up/down where PoE devices are connected to, like Cisco Access Points, Digium desk phones, other PoE devices.I have:1) changed cabling2)...

479130 by Beginner
  • 25 replies
  • 0 Helpful votes

Hi, guys. I can not understand. On the Level 2 switch, for instance 0 root is indicated correctly, but for the rest instances the Level 2 switch points to itself. Why is that? Is this correct? My configurationCisco WS-C3750X-48P iOS 12.2(55)SE13switc...

AndreK by Beginner
  • 3 replies
  • 5 Helpful votes

Hello All,I have a few queries related to doing an image upgrade in a Nexus5K(N5K-C5548UP) switch. The switch is currently running system and kickstart image 5.2(1)N1(1) and it has vPC configuration. I need to upgrade the switch to 7.3(7)N1(1b). Soft...

Hello,i have a N5K-5548UP-AF and it supports only 3 copp rules which available in system, the problem is when someone from inside or from outside (internet) send tcp syn attacks udp flood,... to the switch my cpu will be %100,how can i protect my con...

Hello, I have a Cisco Catalyst 2960 PoE-24 switch. None of the ports is working or blinking. I tried restart. The following LEDs are on: SYST (flashing) RPS (stable) STAT (stable) DUPLX (stable) SPEED (stable) POE (stable)   The console output upon b...

AI99 by Beginner
  • 2 replies
  • 0 Helpful votes

Hi together, i've got the N9K-C93108TC-FX in use and activate Jumbo MTU 9216 on each port.The Problem is, that the Switch blocked all Frames >1514Bytes (pass only <=1514Bytes)On the PC (JumboPackages=ON) i get only a Bandwith ~40Kb/s, but i should re...

MichF47603 by Beginner
  • 3 replies
  • 0 Helpful votes

Hello,I have a problem with this switch, we received this as a product to train on without any credentials, looking online on how to reset this was simple however problems occurred. Firstly when powering off and holding mode the console would loose c...

Hello. I'm not very good at English, so I use Google Translate.I referred to the documentation, but asked because I couldn't find a clear statement.On a catalyst 6500 using VSS, you can synchronize the mac address table and increase the availability ...

Hi all. I just lost my IE4010 switch for a couple minutes - seeing this in show version: uptime is 5 minutesSystem returned to ROM by address error at PC 0x3F2CFF0, address 0x0System restarted at 17:53:34 EST Thu Sep 24 2020System image file is "sdfl...

WGL_BK by Beginner
  • 9 replies
  • 0 Helpful votes

Dears, today i face strange issue at Stack switch 3850 SW has int vlan 5  (it's the gateway for users vlan) , from user pc when trying to access any dst outsite vlan via http ===> it Redirect me to the SW login page "As attached image" even if this d...

Recently i need to migrate our windows 2008 server that installed with ssh tectia.All my laptop and checkpoint firewall were able to sftp to the new server successfully. However, for cisco switch we have, i have tried several different devices but th...

yuccajt by Beginner
  • 5 replies
  • 0 Helpful votes