Switching

Dear All,I have been noticed that my LAN always get flapping MAC and now i found there are some device like TP link router has clone MAC enable with default factory and sometime it make flapping or looping from 2 differrent customers.But anyway i wou...

Hello I have a question about EtherChannel Hash MechanismThere is a lot of load balancing mode such as dest-mac/ip, dest-src-mac/ip.I think this can do hash based on the mode.However are there any example of the above hash mechanism?I would like to k...

Hi,I have the following problem with IP DHCP snooping. This feature is enabled for vlan 11, along with Dynamic ARP Inspection.When I disable DHCP Snooping globally and enable it, after a while I get complaints from users that they can not connect to ...

We have an issue that I believe some staff are using MSN Messengerextensively for non business discussions.We don't want to block Messenger as we have Home Workers and over seas workers that we communicate with over messenger. I Want to setup port mi...

OK - this is going to sound pretty newb, but that is only because it is.  First time 5505 config - I inherited it from an office we closed where someone else had gone in and configured it.My dilema...it is currently configured with an internal IP of ...

I've come across this problem a few times, but don't have an explanation why it happens.An entire group will complain that their phones aren't registering and their PCs can't reach the network.The switch is still reachable, but when you go into the s...

According to the command refernce for the Cisco 3130 blade switches, the command to use to download a new version of IOS is the archive download-sw command which requires a .tar file extension. But if you go to the Cisco download center, you will see...

We have a couple of 4500 chassis (Supervisor 6L-E) that were ordered some time ago with the LAN-BASE feature set.  I thought at the time that EIGRP stub was or would eventually be enabled in LAN-BASE.  Now that I'd like to use this feature, I see it ...

Hi guys,Can anyone help me in choosing a Catelyst model, Following the requirement:1. One Layer 3 Switch (Stack function is not needed)2. > 16 1G ports (rj45)3. 2 10 G SFP ports4. 2 1 G SFP portsThanks in advance,

We have an interesting scenario if we plug the blade chassis into one of our Nexus switch and try to get to it using VMware console it does not work, but when we move the same connection to one of our 4948 switches it works fine. Did anyone see this ...