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Hi Guys,Recently ran into a problem. I enabled a simple 802.1x authentication on the switch and recently noticed that some ports had a large number of MAC addresses, when in fact only one PC was connected to that interface. Do you have any suggestion...

Hevin27 by Beginner
  • 10 replies
  • 0 Helpful votes

Im trying to have inter vlan routing using layer 3 switch but failed. Below is the routing table of layer 3 switch. Any help is highly appreciated. Gateway of last resort is to network is directly connected, Vl...

bobson143 by Beginner
  • 23 replies
  • 1 Helpful votes

I have the Cisco IE-4000-4S8P4G-E Switch and when I connect a Cisco GLC-SX-MMD transmitter into port range 1/5-1/8 I get a %PHY-4-SFP_NOT_SUPPORTED: The SFP in Fa1/6 is not supported. I can use the same transmitter in port range 1/1-1/4 and it connec...

Hi All,I have 2960 Cisco switch. After I turn the switch off and back on and I get the "Would you like to enter the initial configuration dialog? [yes/no]: " message again and the config is lost.Please any suggestion would be appreciated.Thanks,Yared...

yaredo70 by Beginner
  • 15 replies
  • 0 Helpful votes

Hey All,I am attempting to get NTP working in a closed area (no access to internet). I am running a pair of Nexus 9000s, one of which is to act as the time server. Following the configuration guide below:https://www.cisco.com/c/en/us/td/docs/switches...

I am currently investigating the cause of consistent output drops on certain interfaces in a port-channel. Only one of the two links is showing drops and the one that is having the issue is steadily increasing the OQD counter. Note that this is only ...

garrybe by Beginner
  • 1 replies
  • 0 Helpful votes