Switching

Hi, I have a wide L2 network where VLANs are extended across many switches. I've been facing an issue with mDNS traffic flooding the entire L2 network, and due to hardware limitations, I haven't been able to completely block it. On the Catalyst 2960,...

Hi All, I have this question bothering my mind. what is the difference between boot system all switch flash:packages.conf and boot system flash:packages.conf

Hello  We are running Cisco 3850-48P-L in our network and facing issues with output errors. We are using these switches in a Service provider network for a large MDU install and offering the MDU a 1 gig plan. When we run a speed test on the switch we...

Is Cisco going to provide SHA1 encryption to the NTP authentication parameter?  This is now required in the DOD realm. 

Hello, in our environment we have a hard bandwidth cap of 800mbps. The problem is that we are all new to the team and no one seems to know where this would have been put in place. I see one potential setting in our Firepower, but as we have two Cisco...

We've a problem where a device's MAC address gets associated with an IP address. After the device is removed and another device is assigned that IP address, nothing is able to ping with the new device because the IP address is still associated with t...

Hello communityI got this issue:I have 4 times the same test network with fixed ip devices in subnet 10.10.10.0/24I also have a PC with 4 NICsI want to consume network services in those test networks based on the local port of the PC.So i was thinkin...

If PC1 ip address 10.0.0.20 and PC2 ip address 10.0.0.30 are connected to two different switches-1 interface valn 20 and switch-2 valn 30 and they are on the network but assigned to different VLANs, they cannot communicate directly without a router

We’re trying to connect 2 switches together via fiber SFP’s. We can’t get link light via the span no matter what, it’s only like 100’. Tried all the single and multi we have available. Tried various cables new in the packaging, rolled tx/rx.When we c...

i have an used cisco switch that I`m to config.after setting up the IP_ADDR, DEFAULT_GETAWAY, MASK, DEFAULT_ROUTER, TFTP_SERVERwhen i try this command:copy tftp://192.168.1.100/c2960-lanbasek9-mz.152-7.E10.bin flash:i get this Error output:The "IP_AD...

Hi everyone, I just received a brand new Cisco ISR 4331 wich boots with " Error: Memory Init Failure" It worked once after removing it from the box but today when I came up it was down with this error. It's the first time I see such a strange error. ...

Hello,Basic setup... both boxes are 2961s. R2 is the routing 'hub' in my gns project, R3 is a remote router, R2 fa1/2 > R3 fa1/2 is a trunk for vlans 100-110. created interface vlan 100 on both routers, trunk ports show up, switchport shows its allow...

Hi,We have a site that is a 4 hour drive away. It has a Catalyst 1000 24port GE, 4x1G SFP. The switch is functioning in that it passes through data and clients are connecting but we cannot find the IP Address of the switch anywhere and think it has b...

Has anyone been able to successfully remove switchport fill-pattern idle speed 8000 command? When i put no in front of it, it says invalid command and not been able to find a way to default the interface. We replaced 8gb sfp with 32gb ones but this c...