Hello, Cisco Community!I’m really happy to share that I’ll be hosting the Cisco Community Lab Series, a brand-new hands-on learning journey designed to help you build practical networking skills step by step.Every Thursday at 8 PM EST, I’ll post a ne...
Forum Posts
Hello friends, I have Cisco 3750 24P switch running in the corner for a while, suddenly I found connection lost to the switch and on console port switch is just booting half way down. Below are last few lines on the console output. Steps I have taken...
Hi all,I have recently purchased a Cisco 3560CG-8PC-S and it has a buzzing sound. I think this sound originates from the transformer within the unit. Is this normal or potentially faulty. Please could someone who has a Cisco 3560CG-8PC-S check this f...
Resolved! Testing failed Cat 3850
Hi thereI have a 3850 that does not give life signs.Power supply unit is on, green lightsPanel of the SW is all off. no lights.Connecting to the console, Putty connects (no error messages) but scree stays on the green square, doing enter does not bri...
Hi there,I wanted to backup my Ciscos configuration but it just does nothing when I click "Download File".I tried Chrome, Firefox and Edge but the error stays the same. Is there a certain reason it does that?Shouldnt be that hard to download a config...
Hello, We have numbers of Cisco WS C2960X 24 and 48 port PoE Switches. We have 60 Panasonic IP cameras which are attached to those switches. Currently we are facing some weird issue that some of those cameras got reset to its default configuration. C...
Hi all, I have two 9300-24T switches with stacking and SW version is 17.06.03. Currently there was many logs occurred as following. Kindly help me how to solve this issue. Thank you all. %IOSXE-3-PLATFORM: Switch 2 R0/0: kernel: sd 6:0:0:0: [sda] tag...
My task is just to get ports from this switch and nothing else. I need 1 VLAN, no IP, no routing - nothing. The problem is that clients connected to the 3650 do not receive an IP address from the DHCP server on top. The switch has been reset to the d...
Buenas, ya llevo unos días con este problema y no he conseguido que funcionase. Tengo una red central y una remota, ambas se comunican. El problema es que he intentado que desde la red remota resuelva las consultas dns a través del server que está en...
I just installed a three cisco c9200 in a stack to replace an existing stack, and created uplinks/port-channels back to a core switch. The only thing plugged into the switch are the uplinks to the core. We are seeing a small 16port switch connected t...
Resolved! Ms425-16 Best design practices
I am adding 2 stacked MS425-16 switches to our network. The core is 6 stacked MS225-48 . Should the WAN be connected direct to the MS425 or to the Core stack? I have another location I inherited that has WAN connected to a primary switch MS225-48 a...
Given the 1:1 mapping operation, it does not make sense for only 4096 VLANs on each switch to map to 4096 VNIs, while VXLAN has provided us with 16 million VNIs to solve this problem.!!!
Hi all,I am not sure if this would be better in previous conversation or being specific to some particularities, better to build a new one.What I would like to do is to do a full upgrade of a Cat 3850+ currently running on a old 3.3.0 SW and bring it...
We have two sites that we would like to send all mirrored traffic to one of the port on site1 for traffic analysis and monitoring using SPAN and ERSPAN. SPAN for Site1 and ERSPAN for Site 2. These core switches are running Catalyst 9400 series. See...
Hello,I'm fearing that I've rendered this switch useless. I've attempted to flash a new IOS to the device. In the process, I only have 'boot' as an option when I break the boot process, configure t yields no ability to configure the switch. switch: b...
Layer 3 IP checksum - recalculated to include changes to IP headerLayer 2 frame checksum - recalculated to include changes to the Layer 2 and Layer 3 headersCan someone explain the diffrence between this 2 processes ? When Layer 3 recalculation check...
