Switching

 does anyone know what sfp module to use with the ie 2000 switch? i have tried Proline GLC-SX-MMD-CDW and Cisco GLC-SX-MMD= and they both dont seem to get me any connectivity. gbic-invalid is enabled as well. 

I have a Cisco 2901 router with a EHWIC card installed within the device. I created the following interfaces and a physical wire is connected to each router EHWIC port and to a LAN switch that is configure for the VLAN associated with that port. What...

Hi All I am currently in process of deploying APIC-EM using the IWAN app to setup my routers. I have a question around the address pools, Am I right in saying for the dmvpn tunnels you must manually configure the loopback on the device first should y...

what is the diffrence between console and auxiliary port ?

Hi,   We were testing multicast routing in the network and we observed odd results. Apparently, the network core is a Meraki that supports multicast. It's a very small network but the results are different from a lab environment that is using pure Ci...

Hi all.   We recently implemented port security on almost all of our access catalyst 2960-x switches, but are encountering some issues whereby if USER1 uses his laptop on a configured port-security port, he will be able to access internet (or any net...

With my job I am studying for the CCNA and have got onto all routing protocols. I have made several collapsed core networks with the core and distribution on one tier with vlan ip's and stp root bridges set. This was with 4 vlans. The network also us...

Dear all,   Do you know which module that can use only 1 core for transfer and receive ? Does cisco switch 2960 support module 1 core ? i know that SFP has 2 Core but i want to  reduce and save fiber cable for use 1 core for transfer and receive.   P...

  @Reza Sharifi Hi, I've a pair of 4500X which had to be converted into VSS, now before converting the switch mode to virtual the VSL should be up But mine is not.   Below is my VSL configuration and the Warning that I get when applying Port-channel ...

Hello ... i have 1 web server and the url that we accessing is much slow, i diganose the server itself ; but its till same,  i found that the interface that is connecting to our cisco switch shows : 85 unknown protocol drops .. what may cause the iss...