Welcome to the Cisco Community Ask Me Anything conversation. Submit your questions from Monday, February 2, 2026, through Friday, February 20, 2026. Our colleagues Amruta Navadagi, Anaya Kalawat, and Mohammad Mehtabuddin will be waiting to assist you...
All,I am trying to enable BFD on C4507 Sup 6L-E, ruunning cat4500e-entservicesk9-mz.122-54.SG.bin, is BFD supported in that case?Thanks!
Hey guys,So I just fired up a used 2821 for the first time and broke into it and by accident, instead of typing in "confreg 0x2142", I fat fingered it and typed in "confreg 0x21421" and reset the router. Now I fire it up and it's just all garbled wit...
Hi all, I hope I'm posting to the right place, sorry if I should have used IP Telephony!My question is this:Our LAN consists of a Cisco 3560G L3 and 7 x Cisco 2960 L2. These provide a gigabit backbone. Off of these switches hang DLink unmanged switch...
Hi,I recently installed a new cisco C6509E chassis with WS-SUP32-10GE-3B, there is weird logging messages.Can someone help me to explain this? It will be greatly appreciated!Here is the chassis info,XXX_6509# sh module Mod Ports Card Type ...
I have two questions reguarding the 3750x series switches.1. Does the 3750x come with the stacking cable(s) or is that a seperate purchase?2. Can you stack a POE and a non-POE version together? (same IP base of course)Thanks,Nathan
Hi,I have a 4507R-E switch with Sup6. after changing the running config, i did a copy run start, and its saved the usual way, but when i restarted the switch it went back to the initial configuration. the show ver shows the (configreg is 0x2102) whic...
Hi All, can anyone explain what does mean the below logs messages? Is something critical and how can we fix it? Host 0021.5a79.65a6 in vlan 100 is flapping between port Gi2/0/20 and port Gi1/0/20Host 0021.5a79.64ca in vlan 100 is flapping between p...
Hello everyone! I recently purchased a few equipment for my CCNA /CCNP lab. I also purchased Cisco 2509 Access Server to connect all other cisco devices. I have followed the procedure to set up my access server and all can connect apart from two of...
Good morning all ,we have a virtual switching system comprising of 2 x 6506 switches, one of them has WS-X6704-10GE card , the other has WS-X6708-10G-3C card, we want to do an etherchannel to a device , is it possible to create lacp etherchannel wit...
I was wondering if it is possible to apply a class base policing on a vlan rather than a port in Catalyst 3750-24T (IP Base) for marking rather than port.the switch is operating in layer 2 mode (only layer 3 address is for management).Additionally, i...
Hello, im doing the following setup, and i dont know how to do thisi have a 3560 switch, and 3 2950 attached to it, and a 2921 acting as router and cmei have three separated vlans, one for voice, other for data and other for managementi want to creat...
Anyone know why there is an %Authentication failed message that pops up for a couple minutes after reboot? Is there any way to get this to stop so you can login immediately after boot? I only seems to happen in newer IOS version anything older then a...
Hi,I have an a Catalyst 2950 with IOS with IOS ver. 12.1(12c)EA1where are connected two router with HSRP configured.If I switch off on of the two routers I don't see on MAC address tablethe port where is connect 0000.0c07.ac01 (layer 2 virtual addres...
Hello all,I have an ASA 5505 firewall connected by a trunk port to a Catalyst 2960. Vlans have been configured and assigned to interfaces on the firewall, and trunk ports configured on both the firewall and the switch. I believe it's configured co...
Hi,I am having some issues with my cisco 877 as of late; it is hooked up to my adsl2+ line and also serves as a DHCP server internally. The only two things connected to it ethernet wise are a linksys wireless access point and an eight port gigabit sw...
