Hello,I have a strange situation on my 4500X.Clients from some VLANs cannot access resources on several VLANs.I have this: 10.0.0.0/8 is variably subnetted, 2 subnets, 2 masksC 10.99.99.0/24 is directly connected, Vlan55L 10.99.99.1/32 is directly co...
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We use 2960-X switches and want to configure them so no IPv6 traffic can be sent. We don't use IPv6 and want to drop all traffic to help mitigate security vulnerabilities associated with it. How would I go about doing that?
We have a firewall for third parties (FW3) and a firewall for secure hosts (FW1) that run eigrp between them via a pair of Nexus 93180s. They also both are eigrp neighbors of the L3 edge of our new backbone. This environment runs fine for connections...
Hi, the ZR-SFP transceiver are supposed to have a diagnostic feature where I can view the dB loss/power/temp?but when I am trying to look for the DOM (Digital Diagnostics Monitoring) it does not show me the desired results ?I want to know if the Swi...
I replaced the standby sup with a new one and configured the necessary VSS configuration and VSL links but the standby sup is stuck in "issu negotiation late" state. Any idea how to fix this?
Hi, I see very high utilization at random times. XX-DS17-1#show loggingSyslog logging: enabled (0 messages dropped, 0 messages rate-limited, 12248 flushes, 0 overruns, xml disabled, filtering disabled)No Active Message Discriminator. No Inactive Mess...
So, I set up our own DNS server for our house. I can see the logs of all of the DNS queries. Also, we use a service from Cloudflare to visualize the DNS queries. Our house has two Cisco switches: CISCO DESIGNED CBS250-8T-D Smart Switch and CISCO DESI...
Hello, I have this topology. When I ping from the Laptop to PC it works, but when I try to ping from the PC to the Laptop it doesn't work, why does this happen?
I have a Cisco 9865 cable box with DVR capabilities. They do not provide support and nor does Cable Company.The unit will not connect with the cable company to provide validation anymore (a new box has no problem). Since it won't connect, we can't ...
I bought a Catalyst C9200L-24T for backup two years ago and want to use it now, but I failed access it with webui account and password is neither cisco or S/N. I need to factory reset it. I had tried hold Mode button over 10 seconds, but the led does...
Resolved! does anyone know how to solve this?
Digital hub offices utilise 1000BASE-T between the access and distribution layer and 10GBASE-T between the distribution and core layer. Calculate the bandwidth for each user when:Two computers directly communicate with each other 2. The dist...
Hi, is there a way to remove/delete the “no platform punt-keepalive disable-kernel-core” “no platform punt-keepalive settings” from my running config without rebooting? I am currently working on 3850, thank you in advance example below:no service pa...
Hey guys, I have a SG200-50P that I bought used. Yesterday I finally wanted to migrate all of my infrastructure to it. I connected a door phone (Fanvil i10, not that it matters) to it. It powered up (POE) and got an IP. So all working. But it was in ...
I have a Cisco IE 3300 switch installed with two 480w AC to DC power supplies. Is it possible for them to be used in a active/active mode?
Hello,Two of our SG350--28MP switches are connected by two cables.We created a LAG for two switchports on both switches.The LAG functions until we restart one of the switches.The LAG link is down after the restart.When we unplug and replug the two LA...
