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In the network that I recently started serving, there are quite a few switches with an old version of IOS. Switch Ports Model SW Version SW Image Mode------ ----- ----- ---------- ---------- ----1 28 WS-C3650-24PD 06.03.04.E cat3k_caa-universalk9 INS...

Hello all  i have 1 cisco 6500 and 2 nexus 5k(vpc) in my topology cisco 6500 connected nexus  by 2 fiber cables each nexus (channel-group) i give a "input errors" one of the interface on cisco nexus what is the reason  tanks Ethernet1/1 is upadmin s...

Hello,   I need help figuring out what kind of topology I should configure between two switches. My goal is to have a redundant trunk that all VLANS would pass over until the link is lost. Here is the situation...   I have a fiber trunk between two s...

I know that when we add a power-on switch to stack, re-elect a new master will occur, but can someone tell me what exactly happened, I mean wich switches will reboot? and how the stack will elect the new master.thank you 

Below is an example of alerts that we received for our Cisco 9300 switches; Cisco IOS XE Software, Version 16.09.04We would like to understand how we can customize the alerts that specifically address each hardware, Cisco IOS version AND the specific...

Hi,I have been attempting to configure QoS on the nexus 4k blade switch to set the CoS value of incoming traffic off the internal 10G interfaces, but have come across an error on which I can find no information on. Any advice would be appreciatedConf...

Hi everyone,I'm having trouble finding any information on what these logs could mean:2011 Oct 27 16:17:48 XALBCVMNX01 %FWM-2-STM_LOOP_DETECT: Loops detected in the network among ports Po3 and Po4 vlan 100 - Disabling dynamic learn notificationsfor 18...

darkid123 by Level 1
  • 12 replies
  • 0 Helpful votes

WS-C3850-12X48U running 16.9.5I added all ports to the Application Visibility enabled column but I'm not seeing any AVC/NBAR data.Tried rebooting the switch but still no data.Does it take a while to show up or is there something wrong with my config?...

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DJX995 by Level 3
  • 5 replies
  • 0 Helpful votes

Hello,As below topology, end devices pings each other, but cant ping to vlan ip on Remote Switch(, although i can ping this vlan ip from CORE switch! -vlan 100 ( on CORE SW.-vlan 20 ( ) on CORE SW. -vlan 20 (192....

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