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...
HI to all ,we have modem: with no RF problem the modem access to the internet durning 3-4 min then we lost conncetivty (ping ) to the cpe mac and we see this error from the log :%UBR10000-3-BPI_ENFORCE: Blocking CPE=6c2e.85fd.3d66 CM=6c2e.85fd.3d64...
Hi All,By mistake, I have removed the passwords under line con 0 and line vty 0 4.After I signed out I realized that I can't access (telnet). It's always giving me this message " Password required, but none set".As I've also removed the password unde...
I am a programmer with a small company so I also have to wear the hat of systems admin, helpdesk, and network engineer. I know enough about networking to be dangerous so if you will take the time to answer please put it in simple language as I don't...
It was unclear to me from the CIsco VPC doc on whether a VPC (going to 2 separate 2Ks) will aggregate both links, and how does the process work for load balancing.
Please bear with me. I may be asking a simple question but the bottom line is I need some help.I have a single Cisco 3750 POE Switch (10/100Mbps) and a Cisco 2901 Router (CME).My data network is on 192.168.5.0/24 (VLAN 500) and Voice on 192.168.4.0/...
Hello, I recently purchased some used Cisco routers and switches to learn with. My first goal was to try and setup a small network that would connect back to my home network.The setup, I am currently using is 2 2610 Cisco Routers and 1 2950 Switch, ...
Hi, i would like to configure a Trunk with all VLANs between a Cisco Catalyst 3650 an a DLINK DES-7210.On the DLINK is the def. GW via VRRP defined.Now i get the following Error:%ARP-4-DUPADDR: Duplicate address 172.28.72.1 on interface VLAN 72 port ...
hi all ,i have 192.168.2.0./24lan1--------asa1--------inteernet--------asa2------lan2192.168.0.0/24vpn ikev1 is upand lan1 can see lan2======================im sure that i put the remnote lan of asa1 to "any"but only the traffic to lan2 is being go ...
How IP addresses are found?I just wanna know how did people came to know that they need an IP address to assign to network devices?Please don't mind my question is too small or looks silly.Thanks in advance.Regards, Chandu
Hi Network Engrs,I've always wanted to ask you this question. Based from the table below I pick one. Class A subnet 255.255.255.0 has 65536 effective subnets, while Class B 255.255.255.0 has 256 subnets.So, how did it come up with these numbe...
i have recently been tasked to redesign our LAN, its has been one broadcast 192.168.16.0 subnetted 255.255.248.0. may you kindly assist on how to vlan the network that will have about 400 workstations in 8 departments, 105 mitel ip phones, 60 servers...
Hi,we get network issues, if one of our employees build a loop on a desktop switch in his/her office.My test enviroment looks like this.Switch A is a Cisco 4500 with SUP7 and IOS Version 03.03.00.SG. Switch B is an unconfigured Netgear GS108T Desktop...
Hey there, I connected "FE 0/1" (cisco 1841) to "Ethernet 1/0" ( NM-4E module in 2651 router). Both interfaces' status are up but their line protocol is down. I sat both their speed to 10Mbps and their duplux to full but no luck. Is this because i am...
I have to 7204 routers. Two subinterfaces with vlans were configured as follows.interface GigabitEthernet3/1.500description Xencapsulation dot1Q 500ip vrf forwarding Xip address x.x.x.x 255.255.255.252!interface GigabitEthernet3/1.510description Yenc...
Hi guys,Do you know why when upgrading a switch IOS via ftp, sometimes there is a folder created in the flash for the new firmware automatically, and sometimes dont.I just transfered a .bin file to the new switch and noticed it was copied on the root...
