Switching

Hello AllI am looking for Cisco IOS Software upgrade instructions information for the following devices Cisco 7710 Switches,Cisco 9200 Switches Cisco 5515 switches & Cisco ASR 1001-X routers. Can you tell me where i can acquire this information

Hello friends, I have a Catalyst 2960-L 24 port switch. When it turns on it gets a blinking amber light and then it turns on. I tried to access the switch through the console port and when it starts at the terminal, some strange letters appear. Would...

We have a Cisco 4321 that provides DHCP and DNS to our entire network.  I would like to update the dns settings (from internal servers) to Open DNS.  I can connect to the 4321 with telnet.  Can someone walk me through how to make this change using te...

Hi We have two groups of ip address like the below, most of which are identical between the two groups. But we need to find out which ip address only exist in one of the two groups. Anyone can share python script? Thank youGroup1:10.1.1.1, 10.1.1.2, ...

Hi,Do the Cisco Catalyst 1000 series switches support QinQ? If so, what models support QinQ?

Hi masterI am looking the safety way for changing STP mode from  RSTP to PVST+There 50 Switches running  If I change mode one by one. Any risk ? or any better way to do it. Note * I had check no blocking state on any interface.

OThe problem: ensure wireless devices cannot speak to each other but can print.The kit: GL Net access point, Cisco layer 3 switch & a PFSense firewall.So, initially I intended to put the GL Net box into AP mode (instead of router) and use Cisco’s pri...

Hello,  So we are trying to switch to new firewall hardware. Latest software. Same configs. No changes on our core. New firewall with test bed core switch works fine. So we try to go Live. Swapped cables, cleared arp. If I ping to internet from our c...

I have a network with 1 switch (cisco catalyst 3560), one router (cisco 2900) and for now 5 access points (cisco 1142N).how can I apply mac filtering in my network? 

Spoiler  Dear Community Members,To check whether a switch, Router, ASA Firewall  is healthy and all is ok what should I be looking for in addition to the following?

Hello,I am using a Cisco Switch CBS220-16P-2GIt does not come with telnet or ssh enabled by default. Only https.( I do not think that this switch is running Cisco IOS XE. )I just got the switch and discovered the RESTCONF.Because of this, i am buildi...

Hello,is it possible in traditional L2 L3 switching without the help of DNA ?