Switching

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)...

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...

I am configuring a new Cisco edge switch stack, and temporarily I am trunking this stack through another edge switch back to my core switch (no spare fiber pairs to use to trunk directly). This is how they're configured (lots of extraneous stuff remo...

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...

We've been experiencing a really annoying issue with our two 6807s (each with two SUP2-2T and two C6800-32P10G modules, XL variant), ever since we got them some five years ago:  every once in a while ports start failing the TestNonDisruptiveLoopback ...

Hello, We have 3500 and 2950 series switches in a cascade stack. How many switches can we have in this stack?.. I guess the question is how many switches can we have in this type of configuration cascaded together?.. thanksiosman

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 ...

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...

We have a cisco switch (WS-C3850-12S) that is used to connect Dell servers with LC type fiber cable.We recently purchased a new physical server with the Broadcom 57412 Dual Port 10Gbe SFP+ Adapter card.Our concern is that the fiber connection is down...

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...