I was reading about this advisory CSCvd23476 where it says the POE port suddenly stops providing POE  as we are seeing that issue in our company where Avaya phone suddenly stops getting power and go dead. It just started happening and we saw it on fe...

What are the limitation of running 50 micro multimode fiber as opposed to 62.5 MMF?

I am trying to connect the new 6509E switch with 3750 using SFP module. 6509E is running 12.2(33)SXH and has a SUP720-3B and 3750 is running IOS 12.2(25)SEE2. We can't seem to establish the connectivity using port-channel or single port. Port is prop...

I've a stackable 3750 switches. There are three with one being master and all of them have a same priority. What is the easiest way to find the interface associated with an IP as show arp | incl 192.168.x.x shows the mac address of the master switch ...

We have linux based modular messaging system running behind the core router 3745 which has a point to point T1 connection to 3825. Unfortunately, when we try to do the traceroute to the other linux host sitting behind 3825 the packets drop at the rou...